Most American money advice is written as though the hard part is choosing a business idea. It is not. The hard part is that the United States taxes and prices self-employment very differently from employment, and almost nobody explains the difference before you have already quit.
An employee sees a payslip with tax taken out, an employer paying half the payroll tax, and a health plan that costs a few hundred dollars a month. A self-employed person in the same country, earning the same headline number, sees none of that. They pay both halves of the payroll tax, they get no employer premium contribution, they have to fund four tax payments a year out of irregular cash flow, and in 2026 they buy health cover in a market that has just been reshaped by the expiry of a federal subsidy.
This page is about that gap. It covers the structural decisions (sole proprietor versus LLC), the tax mechanics (self-employment tax, the 400 dollar trigger, quarterly payments, the Social Security wage base), the reporting rules that keep changing (1099-K), the enormous state-by-state variation in cost, and the item that swamps everything else for most people: health insurance.
There are no success stories here. There are no income screenshots and no named people who supposedly made a fortune doing this. Every number below comes from a source you can click at the bottom of the page, mostly the IRS, the Social Security Administration, state agencies, or KFF. Where I could not get a sourced number, I say so and give a reasoned range instead.
Self-employment income in the United States is extremely skewed, and any "average" you see is close to meaningless.
The Census Bureau's Nonemployer Statistics count businesses with no paid employees that file a federal return with receipts of at least 1,000 dollars. For 2023, the most recent reference year published, those businesses took in roughly 1.8 trillion dollars in total receipts, which the Census Bureau puts at about 6.4 per cent of US current-dollar GDP.
The Aspen Institute's gig economy data project, drawing on the same series, records the count of nonemployer establishments rising from about 24 million in 2015 to about 30 million in 2023.
Divide one by the other and you get average gross receipts under 60,000 dollars per business, before any expenses. That arithmetic is mine, not the Census Bureau's, and I am flagging it as an estimate. More importantly, it is an average across a distribution that includes a large number of businesses with a few thousand dollars of receipts and a small number with millions. The median is far below the mean. Half of the businesses in that count are somebody's evening Etsy shop or a single-client consultancy that ran for four months.
If you start earning money in the United States without doing anything at all, you are a sole proprietor. There is no form to file, no fee, and no registration. You report the activity on Schedule C of your Form 1040 and pay self-employment tax on the profit. That is the default and it is free.
The Small Business Administration describes the trade-off directly. As a sole proprietor, "your business assets and liabilities are not separate from your personal assets and liabilities. You can be held personally liable for the debts and obligations of the business." An LLC, by contrast, can "protect you from personal liability in most instances," so that "your personal assets, like your vehicle, house, and savings accounts, won't be at risk in case your LLC faces bankruptcy or lawsuits."
Read the hedge in that sentence carefully. "In most instances" is doing a great deal of work, and the next section is about what falls outside it.
This is the section most guides skip, and it is the one that costs people money.
The practical reading: an LLC is worth having if your work can plausibly cause loss to a third party, if you sign contracts, if you hold customer money or data, or if you have personal assets worth protecting. It is close to pointless if you are a freelance writer with 4,000 dollars of annual income, no contracts, and no assets, and you have just paid Massachusetts 500 dollars for it.
An Employer Identification Number is the business equivalent of a Social Security number. You need one to open a business bank account in the entity's name, to hire, to file certain returns, and to avoid handing your SSN to every client who sends you a 1099.
The IRS is unusually blunt about the cost: "Beware of websites that charge for an EIN. You never have to pay a fee for an EIN."
A sole proprietor with no employees can generally use their SSN instead, but getting an EIN anyway is free and reduces how many businesses hold your SSN. There is no downside worth the fee anyone would charge you for it.
State formation fees vary widely, and the headline fee is usually the least important part.
That is a roughly eighteen-fold difference in ongoing cost between two US states for the same legal structure.
If you read anything written in 2024 about beneficial ownership reporting, it is now out of date.
FinCEN published an interim final rule on 26 March 2025 that redefined "reporting company" to mean only entities formed under the law of a foreign country and registered to do business in a US state. In FinCEN's words, "all entities created in the United States, including those previously known as domestic reporting companies, and their beneficial owners will be exempt from the requirement to report BOI to FinCEN."
So: a US-formed LLC owned by US persons has no BOI filing obligation under the current rule. Anyone selling you a BOI filing service for a domestic LLC is selling you nothing. If your entity was formed abroad and registered to do business in a US state, the requirement can still apply and you should read FinCEN's own guidance.
This is the number that surprises people who have only ever been employees.
The self-employment tax rate is 15.3 per cent, made up of 12.4 per cent for Social Security and 2.9 per cent for Medicare. An employee pays half of each and their employer pays the other half. A self-employed person pays both halves. That is not a penalty; it is the same total payroll tax an employee generates, with the employer's share now visible because you are the employer.
How it is actually computed:
- You start from net profit (Schedule C line 31), not gross revenue.
- You multiply that by 92.35 per cent (0.9235) to get net earnings from self-employment. This adjustment approximates the deduction an employer would get for its half.
- The 12.4 per cent Social Security portion applies only up to the wage base. For 2026 that base is 184,500 dollars, up from 176,100 dollars in 2025. This is stated on the IRS's own 2026 Form 1040-ES, which prints "Social security tax maximum income: 184,500 dollars" on the self-employment worksheet, and it matches the Social Security Administration's announced 2026 contribution and benefit base.
- The 2.9 per cent Medicare portion has no cap. It applies to every dollar of net earnings.
- An Additional Medicare Tax of 0.9 per cent applies above 200,000 dollars for single filers, 250,000 dollars married filing jointly, 125,000 dollars married filing separately.
- Any W-2 wages you also earn use up the Social Security cap first, which is why the worksheet asks for your expected wages before computing the self-employed portion.
- You deduct half of the self-employment tax above the line when computing adjusted gross income.
What this means in practice at a few profit levels, computed from the rules above (this is arithmetic on the published rates, not a case study):
- 30,000 dollars of net profit: net earnings 27,705 dollars, self-employment tax about 4,239 dollars.
- 80,000 dollars of net profit: net earnings 73,880 dollars, self-employment tax about 11,304 dollars.
- 200,000 dollars of net profit: net earnings 184,700 dollars, which is just above the 184,500 dollar Social Security cap, so the Social Security portion is capped at about 22,878 dollars and Medicare adds about 5,356 dollars, for roughly 28,234 dollars before the Additional Medicare Tax.
Note what happens at the top: above 184,500 dollars the marginal payroll cost falls from 15.3 per cent to 2.9 per cent (or 3.8 per cent once the Additional Medicare Tax bites). The tax system is regressive in this band, which is why the crossover maths on entity choice changes at higher income.
One thing to keep in mind before you go looking for ways to avoid it: self-employment tax is what buys your Social Security coverage. Reduce reported earnings aggressively and you reduce your eventual benefit. That is a real trade, not a free win.
The 400 dollar trigger and the "no 1099, no tax" myth
The threshold that determines whether you must file at all is small and it is not the 1099 threshold.
If your net earnings from self-employment were 400 dollars or more, you must file. The IRS states it plainly: you must file if "your net earnings from self-employment (excluding church employee income) were 400 or more." Publication 334 repeats it.
Four hundred dollars. Not 20,000. Not 2,000. Not 600.
The confusion arises because people conflate two entirely separate things:
- Your obligation to report income and pay tax on it. This is triggered at 400 dollars of net self-employment earnings for the self-employment tax filing requirement, and separately by the ordinary income tax filing thresholds.
- A payer's or platform's obligation to send you an information return. This is the 1099 threshold, and it has nothing to do with your liability.
Income is taxable whether or not a form arrives. If a client pays you 1,500 dollars in 2026 and sends no 1099-NEC because the threshold is now 2,000 dollars, that 1,500 dollars is still income and still reportable. The form is a copy of information sent to the IRS; it is not the thing that creates the tax.
Schedule C also has a gate before any of this: the activity has to be a business. The IRS instructions say an activity qualifies "when your primary purpose for engaging in the activity is for income or profit and you are involved in the activity with continuity and regularity," and that "a sporadic activity, a not-for-profit activity, or a hobby does not qualify as a business." If it is a hobby, the income goes on Schedule 1 and you do not get to deduct the expenses against it. People who invent a business to generate losses against other income run straight into this.
1099 reporting thresholds: what changed, again
The 1099-K threshold has been changed, delayed, delayed again, delayed a third time, and then repealed. Here is the state of it now.
Form 1099-K (payment platforms and marketplaces). The One Big Beautiful Bill Act retroactively reinstated the pre-2021 threshold. Third-party settlement organisations are not required to file a 1099-K unless the gross amount of reportable payment transactions exceeds 20,000 dollars and the number of transactions exceeds 200. Both tests, not either. The IRS confirmed this in its FAQ release of 23 October 2025.
The history is worth knowing because it explains why so much online advice is wrong:
- The American Rescue Plan Act of 2021 dropped the threshold to 600 dollars with no transaction minimum.
- The IRS delayed implementation repeatedly rather than enforcing it.
- Section 70432 of the 2025 Act reinstated the 20,000 dollar and 200-transaction thresholds retroactively. The 600 dollar federal rule never fully took effect.
Form 1099-NEC and 1099-MISC (direct payers). Section 70433 of the same Act raised the long-frozen 600 dollar threshold to 2,000 dollars for payments made after 31 December 2025, with inflation indexing from 2027. Revenue Procedure 2025-32 confirms the base threshold under section 6041(a) is 2,000 dollars for payments made after 31 December 2025.
States do not all follow the federal rule, and this is where people get caught. Stripe publishes the state filing thresholds it applies for 1099-K, and they diverge sharply from the federal 20,000 dollars:
- 600 dollars: District of Columbia, Maryland, Massachusetts, Montana, Vermont, Virginia
- 100 dollars: Rhode Island
- 1,000 dollars and 4 transactions: Illinois
- 1,000 dollars: New Jersey
- 2,500 dollars: Arkansas
- 0 dollars if state tax was withheld: Arizona, Colorado, Indiana, Iowa, Kentucky, Louisiana, Minnesota, North Dakota, South Carolina, Utah, West Virginia, Wisconsin
Sources disagree here and it is worth recording. Several tax blogs list North Carolina among the 600 dollar states; Stripe's own filing table shows North Carolina as "same as IRS." Some lists include Missouri; Stripe shows no 1099-K filing requirement there. Where a platform's own operational documentation and a summary article conflict, the platform's documentation is the better guide to what will actually land in your mailbox, but neither is a substitute for your state revenue department.
The practical upshot: you may receive a 1099-K in Maryland at 700 dollars of sales and none in Texas at 15,000 dollars. Neither fact changes what you owe.
Quarterly estimated payments: a cash-flow problem disguised as a tax problem
Employees have tax withheld from every payslip. Self-employed people do not, so the US requires payment in instalments during the year.
The rules, from the 2026 Form 1040-ES:
- You generally must pay estimated tax for 2026 if you expect to owe at least 1,000 dollars after withholding and refundable credits, and you expect your withholding and refundable credits to be less than the smaller of 90 per cent of your 2026 tax or 100 per cent of the tax shown on your 2025 return (which must cover twelve months).
- If your 2025 adjusted gross income was more than 150,000 dollars (75,000 dollars if married filing separately for 2026), substitute 110 per cent for 100 per cent. This is the rule that catches people after one good year.
- There is an exception: you do not have to pay estimated tax for 2026 if you were a US citizen or resident for all of 2025, you had no tax liability for 2025, and your 2025 tax year covered the full twelve months.
The 2026 due dates:
- 1st payment: 15 April 2026
- 2nd payment: 15 June 2026
- 3rd payment: 15 September 2026
- 4th payment: 15 January 2027 (not required if you file your 2026 return by 1 February 2027 and pay the whole balance with it)
Notice the periods are not equal quarters. The second payment covers two months. This trips up people who set aside money on a calendar-quarter basis.
If you underpay, the penalty is interest, imposed on each underpayment for the number of days it remains unpaid. The IRS sets the rate quarterly and it has been high by recent historical standards: the non-corporate underpayment rate was 7 per cent in the first quarter of 2026, 6 per cent in the second, and 7 per cent in the third, compounded daily. That is a meaningful cost, not a slap on the wrist, and it is not deductible.
Three practical points that matter more than the rules themselves:
- The prior-year safe harbour is the tool to use when income is volatile. If you pay 100 per cent (or 110 per cent) of last year's tax in four instalments, you are protected from the penalty regardless of how well this year goes. You will still owe the balance in April, but you will not owe interest on the shortfall.
- If your income arrives unevenly, the annualised income instalment method exists. A person who earns nothing until October should not be penalised for not paying in April. Form 2210 Schedule AI handles this. It is tedious and worth it in a lumpy year.
- The real failure mode is spending the tax money. Self-employment tax plus federal income tax plus state income tax can easily be 30 to 40 per cent of profit. Money that sits in your operating account will get spent. Move the tax share to a separate account the day the payment clears, not at quarter end.
The deductions that actually move the number
Ignore the write-off content on social media. These are the ones with real, sourced mechanics.
Qualified business income (section 199A). The 20 per cent deduction on qualified business income was made permanent by recent legislation. From 2026 there is also a minimum deduction of 400 dollars available if you have at least 1,000 dollars of qualified business income from an active trade or business, per section 70105 of the Act as reflected in Revenue Procedure 2025-32.
The 2026 thresholds, from Revenue Procedure 2025-32 section 4.26:
- Married filing jointly: threshold 403,500 dollars, phase-in range top 553,500 dollars
- Married filing separately: threshold 201,775 dollars, phase-in top 276,775 dollars
- All other returns: threshold 201,750 dollars, phase-in top 276,750 dollars
Below the threshold, the wage and property limits and the specified service trade or business restriction do not apply, so most people reading this get the full 20 per cent. The phase-in ranges widened for 2026 from 100,000 to 150,000 dollars for joint filers and from 50,000 to 75,000 dollars for everyone else, which softens the cliff for consultants, lawyers, accountants and other service businesses in the phase-out band.
Home office, simplified method. 5 dollars per square foot, maximum 300 square feet, maximum deduction 1,500 dollars. The space must be used exclusively and regularly for business. Under the simplified method you take no depreciation and there is no depreciation recapture on sale, and you still claim mortgage interest and property taxes in full on Schedule A. The deduction cannot exceed the gross income from the business use of the home minus other business expenses, and unused amounts cannot be carried forward. Employees cannot claim it at all.
Mileage, and the 2026 mid-year change. The IRS set the 2026 business standard mileage rate at 72.5 cents per mile effective 1 January, then raised it to 76 cents per mile from 1 July 2026. If you drive for business in 2026 you have to split your log at 30 June and apply two different rates. Almost every mileage app and spreadsheet built before mid-2026 will get this wrong by default.
Half of self-employment tax, deducted above the line as described earlier.
Retirement contributions. See the section below; for a profitable one-person business this is the single largest legitimate deduction available.
Self-employed health insurance, with a large caveat covered in the health section.
A note on the 2026 tips and overtime deductions, because they are being widely misdescribed. For 2026 you may be able to deduct up to 25,000 dollars of qualified tips, limited if modified AGI exceeds 150,000 dollars (300,000 dollars if married filing jointly), and the tips can be reported to you on a 1099-NEC or 1099-K as well as a W-2, so self-employed people in tipped occupations are not automatically excluded. The overtime deduction (up to 12,500 dollars, or 25,000 dollars joint) applies to qualified overtime compensation, which is a W-2 employee concept. Neither is a general "no tax on income" provision.
Also for 2026: several credits are gone. The credits for new clean vehicles, previously owned clean vehicles, commercial clean vehicles, energy efficient home improvements and residential clean energy systems have expired and cannot be claimed on a 2026 return. If your plan involved buying an electric van for the credit, the plan is out of date.
The S-corporation election: when it pays and when it costs
This is the most oversold idea in American small business content, so here is the actual mechanism.
An LLC can elect to be taxed as an S corporation. The owner then becomes an employee of their own company, takes a salary subject to payroll tax, and takes the remaining profit as a distribution that is not subject to self-employment tax. The saving is 15.3 per cent (or 2.9 per cent above the wage base) on the distribution portion.
The constraint is that the IRS requires reasonable compensation. The IRS states that S corporations must pay "reasonable compensation to a shareholder-employee in return for services," and that where compensation is unreasonably low, the IRS can reclassify distributions as wages subject to employment taxes. The factors it lists include training and experience, duties and responsibilities, time devoted to the business, dividend history, comparable compensation in similar businesses, and any compensation agreements. Income attributable to the shareholder's personal services should be paid as wages.
There is no safe harbour percentage. The "pay yourself 40 per cent as salary" rule circulating online is not in any IRS document.
The costs against the saving:
- A real payroll. You need a payroll provider, quarterly Form 941 filings, annual Form 940, W-2s, and state unemployment insurance registration and payments. Payroll services for a one-person S corp are commonly advertised somewhere in the region of a few hundred to about a thousand dollars a year; that is an estimate from advertised pricing, not a sourced figure.
- A separate business tax return. Form 1120-S is due 15 March, a month before your personal return, and preparation costs more than a Schedule C.
- State-level treatment varies. Some states impose entity-level taxes or fees on S corporations that erase part of the federal saving.
- Lower Social Security earnings, reducing your eventual benefit.
- Health insurance handling gets more complex. For a more-than-2 per cent shareholder, premiums are deductible by the corporation and reportable as W-2 wages, and, when provided under a plan covering a class of employees, are not subject to Social Security, Medicare or FUTA taxes. But the shareholder cannot take the above-the-line deduction for a policy they bought personally with personal funds; the corporation has to pay or reimburse the premiums and report them as W-2 compensation. Getting this wrong loses the deduction.
The honest summary: the election starts to make arithmetic sense when profit is comfortably above the level where the payroll tax saving on the distribution exceeds several thousand dollars of extra compliance cost, and when profit is stable enough that you can run a real salary through a real payroll every month. Below that it is a way to pay an accountant more to save you less. Model your own numbers before electing, and remember the election is not costless to unwind.
Health insurance: the largest hidden cost, and 2026 made it worse
If you are leaving a job with employer cover, this is the number that will determine whether self-employment works for you. It is bigger than the tax difference for most families.
What employment was subsidising. KFF's 2025 Employer Health Benefits Survey put the average annual premium for employer-sponsored coverage at 9,325 dollars for single coverage and 26,993 dollars for family coverage. The average worker contributed 1,440 dollars for single and 6,850 dollars for family cover. Premiums rose 5 per cent for single and 6 per cent for family cover over the year.
Read those two pairs of numbers together. A worker with family cover was paying 6,850 dollars and receiving roughly 20,000 dollars of employer contribution. Quit, and that 20,000 dollars does not follow you.
What changed in 2026. The ACA's enhanced premium tax credits expired at the end of 2025. Two things followed:
- The 400 per cent of federal poverty level subsidy cliff returned. The 2026 Form 1040-ES states it directly: "If your household income is more than 400% of the federal poverty line, you are no longer eligible for the premium tax credit." One dollar of income over the line removes the entire subsidy.
- The cap on repaying excess advance credits was removed. The same source states: "There is no longer a limit on the amount you will have to pay back if you received too much in advanced credit; this is true even if your household income is less than 400% of the federal poverty line."
That second change is specifically dangerous for self-employed people, because you estimate your income at enrolment and reconcile it at filing. Under-estimate your income in a good year and you now repay the whole excess subsidy with no cap. A freelancer who projected 45,000 dollars and earned 70,000 dollars can face a five-figure clawback on the tax return.
What actually happened to the market. KFF's tracking of 2026 enrolment found:
- Marketplace plan sign-ups fell to 23.1 million, down more than a million from 2025, with effectuated enrolment projected to fall to around 17.5 million, a decline of roughly 4.8 million people.
- The average monthly premium payment net of tax credits rose 58 per cent, from 113 dollars to 178 dollars. KFF had projected a 114 per cent average increase; the smaller realised figure is partly because enrollees traded down to cheaper, higher-deductible plans and partly because the people facing the steepest increases left the market entirely. That is an important caveat: the average understates the increase because the worst-affected people are no longer in the denominator.
- Average marketplace deductibles rose to 3,786 dollars, up 1,027 dollars or 37 per cent from 2,759 dollars in 2025, the steepest rise since the marketplaces launched.
- Bronze plan selection reached 40 per cent of enrollees and silver fell to a record low 43 per cent. Among low-income consumers eligible for cost-sharing reduction silver plans, take-up fell to 37 per cent from 66 per cent.
Those last two points describe people buying worse insurance to keep the monthly payment survivable. The premium figure alone does not capture the cost, because the deductible went up at the same time.
The group above 400 per cent of the poverty level was only about 3 per cent of 2025 enrolment but accounted for 27 per cent of the sign-up decline. That is exactly the band a moderately successful self-employed household lands in.
The self-employed health insurance deduction, and its limits. You can deduct premiums above the line, but the rules on Form 7206 are narrower than people expect:
- You cannot claim it for any month you were eligible to participate in a health plan subsidised by your employer, your spouse's employer, your dependent's employer, or your child's employer if the child was under 27. Eligibility, not enrolment. If your spouse's job offers subsidised family cover and you decline it, you lose the deduction for those months.
- The deduction cannot exceed your net profit or earnings from the business under which the plan is established. A loss year means no deduction.
- It does not reduce self-employment tax. The instructions are explicit: "You can't subtract the self-employed health insurance deduction when figuring net earnings for your self-employment tax." So a 15,000 dollar premium reduces income tax but not the 15.3 per cent.
The HSA route. If you take a qualifying high-deductible plan, the 2026 limits per Revenue Procedure 2025-19 are:
- HSA contribution: 4,400 dollars self-only, 8,750 dollars family
- HDHP minimum annual deductible: 1,700 dollars self-only, 3,400 dollars family
- HDHP maximum out-of-pocket: 8,500 dollars self-only, 17,000 dollars family
An HSA contribution is deductible, grows untaxed and comes out untaxed for qualified medical expenses. It does not, however, reduce self-employment tax either. And with marketplace deductibles now averaging 3,786 dollars, a large share of plans on offer sit near HDHP territory anyway, whether or not they are HSA-qualified. Check the qualification explicitly; a high deductible does not automatically make a plan HSA-eligible.
The blunt planning rule. Before you leave employment, price your actual plan on your actual exchange for your actual household and income, and add the deductible to the premium. For a family in the band above 400 per cent of the poverty level in 2026, total annual exposure of well over 20,000 dollars between premiums and deductible is entirely plausible. That figure is an illustration built from the KFF premium and deductible data above, not a quoted average. Get a real quote before you resign.
State income tax: a spread wider than most people's tax planning
Where you live can change your marginal rate by more than thirteen percentage points.
According to the Tax Foundation's state individual income tax data, as of 1 January 2026 the following states levy no individual income tax on wage and salary income: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington and Wyoming.
Two qualifications, because the counting is genuinely ambiguous and different editions of the same source count differently:
- New Hampshire repealed its interest and dividends tax as of 2025, which is what moved it into this group. It had never taxed wages.
- Washington does not tax wages but does tax capital gains, on a graduated basis reported by the Tax Foundation as 7 per cent on gains above roughly 278,000 dollars and 9 per cent above 1,000,000 dollars for individual filers. If your wealth plan is equity-heavy rather than salary-heavy, Washington is not a no-tax state for you.
At the other end, the Tax Foundation records California's top marginal rate at 13.3 per cent on income above 1 million dollars, with an additional payroll tax taking the all-in top rate to 14.4 per cent. Hawaii's top rate is 11 per cent. New York and New Jersey are at 10.75 per cent. Among states that do tax income, the lowest top rates are 2.5 per cent in Arizona and North Dakota.
Things people get wrong about this:
- You are taxed where you live and work, not where your LLC is registered. Moving the paperwork does not move the tax residence.
- Changing residence is a facts test, not a form. High-tax states audit departures. Days present, driver's licence, voter registration, where your family lives, where your doctor is, where your possessions are: all of it matters, and the burden tends to fall on you.
- State cost is not just income tax. A no-income-tax state may have high property tax or sales tax, and may still charge substantial entity fees. Texas has no individual income tax and a franchise tax regime for entities; Washington has no income tax on wages and a gross receipts business and occupation tax. Compare total burden, not one line.
- The SALT deduction changed for 2026. The overall limit on deducting state and local income, sales and property taxes rose to 40,000 dollars (20,000 dollars if married filing separately), reduced if modified AGI exceeds 500,000 dollars (250,000 dollars if married filing separately) but not below 10,000 dollars (5,000 dollars). This materially reduces the federal cost of living in a high-tax state for middle and upper-middle incomes compared with the old 10,000 dollar cap.
Sales tax: the liability that accrues quietly
If you sell physical goods, or digital goods in some states, this is the compliance area most likely to produce a nasty surprise, because obligations accrue whether or not you know about them.
Since the 2018 Supreme Court decision in South Dakota v. Wayfair, physical presence is no longer required for a state to impose a sales tax collection obligation. Every state with a sales tax now has an economic nexus rule.
Per the Sales Tax Institute's economic nexus chart, updated 1 August 2026:
- Most states use a 100,000 dollar threshold.
- California, New York and Texas use 500,000 dollars. New York additionally requires more than 100 separate sales.
- Alabama and Mississippi use 250,000 dollars, with Alabama also requiring specified activities.
- Alaska, Delaware, Montana, New Hampshire and Oregon have no statewide sales tax, though Alaska has local sales taxes administered at municipal level.
Transaction-count tests are being repealed in a number of states, which means the number of small sellers caught is falling, but the picture changes by state and by year and there is no single national rule.
Two practical warnings:
- Marketplace facilitator laws often handle this for you on marketplace sales. If you sell through a large marketplace, the marketplace generally collects and remits. If you also sell from your own website, those sales are yours to track.
- Uncollected sales tax is a personal-feeling liability. If you should have collected and did not, the state generally wants the tax from you, plus penalties and interest, and you cannot go back and bill customers who bought two years ago. This is one of the few areas where getting professional advice early is straightforwardly cheaper than not.
Retirement accounts: the actual wealth mechanism
Almost everything above is about not losing money. This is the part that builds it, and self-employed people have access to larger tax-advantaged limits than most employees.
The 2026 figures, from IRS Notice 2025-67:
- Elective deferral limit (401(k), including solo 401(k)): 24,500 dollars, up from 23,500 dollars.
- Catch-up for age 50 and over: 8,000 dollars. For those aged 60 to 63 in 2026, the higher catch-up remains 11,250 dollars.
- Overall defined contribution limit (section 415(c)): 72,000 dollars, up from 70,000 dollars. This is the ceiling on employee deferrals plus employer contributions combined, and it is why a solo 401(k) beats an IRA for a profitable one-person business by a wide margin.
- Annual compensation limit (section 401(a)(17)): 360,000 dollars.
- IRA contribution: 7,500 dollars, with a catch-up of 1,100 dollars for age 50 and over.
- Roth IRA income phase-out: 153,000 to 168,000 dollars for singles and heads of household, 242,000 to 252,000 dollars married filing jointly, 0 to 10,000 dollars married filing separately.
- SIMPLE plans: 17,000 dollars, or 18,100 dollars for certain plans.
- SEP minimum compensation threshold: 800 dollars.
- Roth catch-up wage threshold: 150,000 dollars, above which catch-up contributions to an applicable employer plan must be designated Roth.
The structural point for a self-employed person: a solo 401(k) lets you contribute as both employee (the 24,500 dollar deferral) and employer (a profit-sharing contribution), up to the 72,000 dollar combined limit. A SEP-IRA is simpler to administer but has no employee deferral component, so at moderate profit levels it usually allows a smaller total contribution than a solo 401(k). If you have or plan to have employees, both get more complicated and more expensive, because coverage rules apply.
None of this reduces self-employment tax. Retirement contributions reduce income tax, not payroll tax. That is a consistent theme worth internalising: the 15.3 per cent is difficult to reduce by deduction, which is precisely why the S-corporation election is the only common lever against it, and why it is oversold.
Who should skip this
Plainly:
- Anyone who needs stable income within three months. Between the irregular receipts, the quarterly tax payments and the gap in health cover, the first year of self-employment has worse cash flow than the numbers suggest. If you cannot survive a bad quarter, take the job.
- Anyone with a family on employer health cover in a state where the marketplace alternative is unaffordable. In 2026, with the enhanced credits gone and the 400 per cent cliff restored, this alone will make self-employment the wrong choice for a lot of households. Price it before deciding, not after.
- Anyone with a chronic condition or a needed specialist. Marketplace networks are narrower than large employer plans and 2026 saw a shift toward bronze plans with high deductibles. Check that your existing clinicians are in-network on the plan you can actually afford.
- Anyone hoping an LLC will protect them from the consequences of their own work. It will not. If your exposure is professional negligence, you need insurance, and the entity is secondary.
- Anyone whose plan depends on not reporting income because no 1099 arrives. The reporting threshold is not the taxability threshold. The 400 dollar self-employment filing trigger has not moved.
- Anyone who will not track money. If you will not keep a separate bank account, keep receipts, and set aside tax as it is earned, self-employment will cost you more than it earns, both in tax and in the loss of whatever liability protection you paid to create.
- Anyone under real financial pressure being sold a course about this. The specific structural facts on this page are free, published by the IRS and by state agencies, and clickable at the bottom. Nobody needs to sell them to you.
The failure modes, ranked by how often they bite
- Spending the tax money. Set aside a fixed percentage of every payment received, into a separate account, on the day it arrives. Thirty per cent is a common starting point for someone in a no-income-tax state; more if your state taxes income. Adjust once you have a full year of data.
- Missing the first estimated payment. The April deadline arrives before most new businesses feel like real businesses. The prior-year safe harbour is your protection; use it deliberately rather than guessing.
- Not budgeting for the annual entity cost. Massachusetts wants 500 dollars every year. California wants 800 dollars every year even at zero profit. Diary it.
- Letting the entity lapse. An administratively dissolved LLC is not a reliable shield, and reinstating one costs more than the annual report would have.
- Under-estimating marketplace income at enrolment. With the repayment cap removed for 2026, this now has no ceiling. Update your marketplace income estimate during the year when your income changes.
- Assuming a "no 1099, no problem" rule exists. It does not, and the 2026 threshold changes make this misunderstanding more common, not less.
- Using a 2024 or 2025 figure as though it were current. The wage base moved to 184,500 dollars. The standard deduction moved to 16,100 dollars single and 32,200 dollars joint. The mileage rate changed twice inside 2026. Half the tax content online is stale, including much of it that says "2026" in the title.
A short, honest checklist
- Start as a sole proprietor. Test whether the business earns anything before paying a state for a certificate.
- Get an EIN. It is free and takes minutes. Do not pay for it.
- Open a separate bank account on day one, whatever the structure.
- Work out your state's formation fee and its recurring annual cost before forming an entity. The recurring cost is the one that decides it.
- Price health insurance on your actual exchange for your actual household before you leave employment. In 2026 this is the decisive number for most people with families.
- Set aside tax on receipt, in a separate account.
- Pay estimated tax on 15 April, 15 June, 15 September 2026 and 15 January 2027, using the prior-year safe harbour if your income is unpredictable.
- Keep a mileage log split at 30 June 2026, because the rate changed mid-year.
- Once profit is stable and comfortably into six figures, get an accountant to model the S-corporation election with your actual numbers, including payroll and state costs. Not before.
- Open a solo 401(k) once you have profit to contribute. It is the largest legal tax shelter available to a one-person business.
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