This article is for general informational purposes and doesn’t constitute tax, legal, or accounting advice. Tax rates, contribution limits, and income thresholds change each year, and how they apply depends on your business structure and circumstances. Confirm current details with the IRS, the New York State Department of Taxation and Finance, or a qualified professional before acting on them.
Nobody warns you about this part of self-employment.
You leave a W-2 job, start bringing in your own income, and then tax season shows up looking completely different. No employer withholding taxes from every paycheck. No W-2 waiting in your inbox in January. Just you, a stack of receipts, and a tax bill that can catch people off guard if they didn’t plan for it.
Tax deductions for self-employed workers exist to soften that bill, but only if you know which ones apply to you and keep the records to back them up. This guide focuses on the rules that are specific to being self-employed: self-employment tax, the deductions only self-employed people get, retirement plans built for one-person businesses, and how it all works for freelancers, contractors, and independent professionals in the Buffalo area.
Self-Employed Deductions at a Glance
Self-employed people pay self-employment tax of 15.3% on top of income tax, so every legitimate deduction matters twice. The deductions unique to self-employment are half of your self-employment tax, the self-employed health insurance deduction, SEP-IRA and Solo 401(k) contributions, and the qualified business income (QBI) deduction.
Your everyday business expenses go on Schedule C. Because no one withholds tax for you, plan on quarterly estimated payments to both the IRS and New York State.
Why Self-Employment Taxes Hit Differently
When you work for someone else, your employer pays half of your Social Security and Medicare taxes and withholds the other half from your paycheck. When you’re self-employed, you pay both halves yourself. That’s self-employment tax, and it applies once your net earnings from self-employment reach $400 for the year.
The rate is 15.3%: 12.4% for Social Security and 2.9% for Medicare. It’s figured on 92.35% of your net business profit, not the full amount. The Social Security portion stops at an annual earnings cap ($184,500 for 2026), while the Medicare portion has no cap, and higher earners owe an extra 0.9% Medicare tax above $200,000 of earnings ($250,000 for married couples filing jointly).
That’s on top of regular federal and New York income tax. It’s also why deductions matter so much when you work for yourself: a legitimate business expense lowers your net profit, which lowers both your income tax and your self-employment tax at the same time.
Half of Your Self-Employment Tax
Here’s one piece of good news built into the system: you can deduct half of your self-employment tax as an adjustment to income. You don’t need to itemize to claim it, and it’s calculated automatically on Schedule SE.
It doesn’t reduce the self-employment tax itself. What it does is lower the income your regular income tax is figured on, which roughly mirrors the way an employer’s share of payroll taxes isn’t counted as income to an employee.
Quick Questions: Self-Employment Tax
Do I owe self-employment tax on a side gig?
Yes, if your net earnings from self-employment are $400 or more for the year, even if you also have a full-time W-2 job and even if no client sent you a 1099. Your W-2 wages do count toward the Social Security earnings cap, which can reduce the Social Security part for higher earners.
Does deducting half of my self-employment tax lower the self-employment tax itself?
No. It lowers your income tax by reducing your adjusted gross income. Business expenses on Schedule C are what lower the self-employment tax, because they reduce the net profit it’s calculated on.
The Self-Employed Health Insurance Deduction
If you’re self-employed and pay for your own health insurance, you may be able to deduct the premiums for yourself, your spouse, your dependents, and children under 27, even if you don’t itemize. Dental and qualifying long-term care premiums can count too, and so can Medicare premiums you pay for yourself. The deduction is figured on IRS Form 7206.
Two rules decide whether you get it:
- The employer-plan rule. You can’t claim it for any month you were eligible to join a subsidized health plan through your own employer or your spouse’s employer. Eligibility alone counts, even if you declined the coverage. This catches a lot of people with a part-time W-2 job or a spouse with benefits.
- The profit limit. The deduction can’t be more than your net earnings from the business. If the business showed a loss, there’s no deduction under this rule.
It’s a straightforward deduction that new business owners often miss simply because they don’t realize it applies to them.
Retirement Contributions: SEP-IRA vs. Solo 401(k)
Saving for retirement as a self-employed worker does double duty. It builds your future savings and lowers your taxable income now. Self-employed people also have access to plans that can allow far larger contributions than a regular IRA.
SEP-IRA. Simple to open and run. As a self-employed owner, you can generally contribute about 20% of your net self-employment earnings (after the half-SE-tax deduction), up to an overall cap of $72,000 for 2026. A SEP can usually be opened and funded as late as your tax filing deadline, including extensions, which makes it a useful last-minute option.
Solo 401(k). Designed for owners with no employees other than a spouse. You contribute in two roles: as the “employee” (up to $24,500 for 2026, plus catch-up contributions if you’re 50 or older) and as the “employer” (based on your net earnings), with the same $72,000 combined cap before catch-ups. At moderate income levels, that two-part structure often allows more than a SEP. Under SECURE 2.0, a sole proprietor can even set up a Solo 401(k) after year-end and make first-year employee contributions up to the tax return due date, not counting extensions.
SIMPLE IRA. Lower limits, but it can make sense once you have a few employees.
The right plan depends on your income, whether you have employees, and how much paperwork you’re willing to take on. A short conversation with an accountant before you open an account can save you from picking the wrong structure. For a wider view, see our retirement and investment tax tips.
Choosing Between a SEP and a Solo 401(k)?
KD Accounting & Tax helps Buffalo freelancers and independent business owners plan retirement contributions, estimated taxes, and deductions before the year closes.
Explore Tax Planning Services Call (716) 589-2665The Qualified Business Income (QBI) Deduction
Many self-employed people, including sole proprietors, single-member LLC owners, and owners of partnerships and S corporations, can deduct up to 20% of their qualified business income. It’s separate from your business expenses and doesn’t require itemizing. The One Big Beautiful Bill Act made the QBI deduction permanent, so it’s no longer scheduled to expire.
For 2026, owners with taxable income below about $191,950 (single) or $383,900 (married filing jointly) can generally take the full deduction. Above those levels, limits phase in, and they’re stricter for “specified service” businesses such as consulting, law, accounting, health, and financial services. Starting in 2026, there’s also a minimum deduction of $400 for people with at least $1,000 of qualified business income from a business they actively participate in.
One catch: the QBI deduction lowers income tax only. It doesn’t reduce self-employment tax. It’s one of the more valuable provisions available to self-employed taxpayers, and worth confirming with your tax preparer that it’s being calculated correctly.
Your Everyday Business Expenses (Schedule C)
Beyond the self-employed-specific deductions above, your ordinary business expenses go on Schedule C: business mileage or vehicle costs, a qualifying home office, equipment and software, supplies, the business share of your phone and internet, advertising and your website, and fees for accountants or attorneys. We cover each of these in detail, including the home office methods and New York’s equipment-depreciation rules, in our guide to small business tax deductions.
Education and Training
One expense category trips up a lot of freelancers. Education that maintains or improves skills in your current work is usually deductible, such as a course, certification, or industry conference. Education that qualifies you for a new trade or profession generally isn’t. A freelance graphic designer taking a course on a new design program can usually deduct it. The same designer paying for law school can’t.
Quick Questions: Audits and Losses
Is the home office deduction a red flag for an audit?
Not on its own. It’s a common, legitimate deduction. What matters is meeting the regular and exclusive use requirement and keeping records that support the square footage and business use you claim.
Do I owe self-employment tax if my business lost money?
Generally, no. Self-employment tax only applies when your net earnings from self-employment are $400 or more, so a business that shows a loss for the year usually owes none. The IRS does offer optional methods that let some people with low or no profit pay a small amount to keep earning Social Security credits.
Reporting Your Income: Schedule C and 1099s
Most sole proprietors and single-member LLC owners report business income and expenses on Schedule C, and the net profit flows to both your income tax and Schedule SE. A few points worth knowing:
- All income is reportable, with or without a 1099. Starting with payments made in 2026, clients generally only have to issue a Form 1099-NEC when they pay you $2,000 or more in a year (up from $600). Fewer 1099s doesn’t mean less taxable income.
- Payment apps and card processors may send a Form 1099-K. Compare it with your own records, since it can include personal transfers or refunds that aren’t income.
- Keep your own income log. Your records, not the forms you receive, are what your return should be built on.
Estimated Taxes: Paying as You Go
Because nobody withholds taxes from your income, the IRS expects self-employed people to pay estimated taxes four times a year, and New York State has its own estimated tax requirement. Underpaying can mean a penalty even if you pay in full by April. A common rule of thumb is to set aside 25% to 30% of each payment you receive, though the right number depends on your income, deductions, and filing status.
Due dates, safe-harbor rules, and how to calculate payments are all in our guide to quarterly estimated taxes.
New York Notes for Buffalo-Area Self-Employed Workers
Your federal deductions carry through. New York’s income tax starts from your federal adjusted gross income, so the half-SE-tax deduction, the self-employed health insurance deduction, and SEP or Solo 401(k) contributions lower your New York taxable income too. The QBI deduction is different: it’s taken after adjusted gross income, so it doesn’t reduce your New York tax.
The MCTMT generally doesn’t apply here. New York’s Metropolitan Commuter Transportation Mobility Tax applies to self-employment earnings in New York City and seven downstate counties. Erie County isn’t in that district, so Buffalo-area self-employed people usually don’t owe it unless some of their self-employment income is earned in the downstate district.
Seasonal income needs a plan. Landscapers, snow plow operators, roofers, and other Western New York trades often earn most of their income in a few months. That makes setting money aside during the busy season especially important, and it’s worth discussing with your preparer how to handle uneven estimated payments. Contractors can find more in our guide to accounting for contractors in Buffalo.
Recordkeeping: The Deduction Behind the Deductions
None of these deductions matter if you can’t support them. Keep receipts, bank and credit card statements, mileage logs, and a simple system for tracking income and expenses through the year rather than reconstructing everything in March.
A separate business bank account makes this much easier; our post on how mixing personal and business expenses affects your tax filing explains why. Even a basic spreadsheet updated weekly beats a shoebox of receipts opened once a year, and if you’d rather hand it off, bookkeeping services in Buffalo can keep your records tax-ready all year.
Working With a Tax Professional
Self-employed deductions add up, but the rules change from year to year, and what applies to one business doesn’t always apply to another. A landscaper, a freelance writer, and a rideshare driver are all self-employed, yet each has a different deduction profile.
This guide covers the deductions that come up most often, but it isn’t a substitute for a return prepared with your specific numbers. Many of the decisions that matter most, like which retirement plan to open or how much to pay in estimated taxes, need to be made before December 31, not after. Our year-end tax planning checklist covers what to review before the year closes.
File Your Self-Employed Return With Confidence
From Schedule C and self-employment tax to your New York return, the KD Accounting & Tax team in Buffalo can help you file accurately.
See Tax Filing Services Call (716) 589-2665Frequently Asked Questions
It varies by business, but retirement contributions, the QBI deduction, the half-of-self-employment-tax deduction, and health insurance premiums are often among the largest, alongside major business expenses like vehicle costs or a home office.
Many self-employed people set aside 25% to 30% of net income to cover federal income tax, self-employment tax, and New York tax. The right percentage depends on your total income, deductions, and filing status, so a tax professional can help you pin down a more precise number.
Not always. A SEP-IRA can generally be opened and funded up to your tax filing deadline, including extensions. Under SECURE 2.0, a sole proprietor can also set up a Solo 401(k) after year-end and make first-year contributions up to the return due date, not counting extensions.
It can for some owners. An S corporation owner who works in the business pays payroll taxes on a reasonable salary, and remaining profits generally aren’t subject to self-employment tax. But it adds payroll, a separate business return, and other costs, so it usually only pays off once profits are well above a reasonable salary. Run the numbers with an accountant before electing.
Usually, yes. If you expect to owe New York income tax that isn’t covered by withholding, New York generally expects quarterly estimated payments alongside your federal ones.