New Hampshire Self-Employment Tax Calculator — 2026
Calculate your self-employment tax liability including Social Security and Medicare contributions. Free calculator with New Hampshire-specific rates.
New Hampshire offers freelancers a rare combination: no income tax on wages or business income and no state sales tax. The state taxes interest and dividends for some filers, but active self-employment income escapes entirely. That leaves the federal self-employment tax as the whole game — 15.3% of net earnings, with 12.4% Social Security capped at $184,500 in 2026 and 2.9% Medicare uncapped.
Manchester consultants and Nashua remote workers pay LLC costs of $100 to file and $100 annually — reasonable by New England standards. The absence of sales tax makes New Hampshire a destination for equipment-heavy businesses and product sellers alike, a genuine advantage over neighboring Massachusetts and Vermont.
The federal deduction stack — 50% SE tax, 20% QBI, home office, health insurance premiums — works identically here, and there's no state return to reconcile. Quarterly estimates follow the federal calendar only. New Hampshire's "Live Free or Die" branding extends to its tax code: for the self-employed, the state layer simply doesn't exist.
Quick New Hampshire Tax Estimate
Based on New Hampshire's tax rates for 2026. Sample calculation for $80,000 net profit.
New Hampshire Tax Facts — 2026
How to Use This Calculator
Start by entering your annual gross self-employment income — the total amount you earned before any deductions. This includes 1099 payments, cash income, and any side business revenue. Next, enter your business expenses: home office costs, equipment, software subscriptions, professional services, vehicle expenses, and other deductible costs. The calculator subtracts these to find your net profit.
Select New Hampshire from the state dropdown so the tool applies the correct state income tax rates. Review the summary screen showing your net profit, self-employment tax, income tax, and total tax liability. Use the detailed breakdown to see exactly how each component was calculated — including the Social Security portion, Medicare portion, and the 50% SE tax deduction. Finally, compare your New Hampshire tax burden against other states and generate a quarterly payment plan.
Why Getting This Right Matters
Underpaying self-employment tax triggers IRS penalties and interest — currently 8% annually on underpayments. New Hampshire residents who miss quarterly estimated payments face additional state penalties. Overpaying means locking up money you could invest in your business. Accurate calculation is the difference between a safe tax strategy and an expensive surprise at filing time.
Self-employment tax is also your contribution to Social Security and Medicare — the same programs W-2 employees fund through payroll withholding. Your 2026 net earnings count toward your Social Security benefits calculation, so underreporting income to reduce self-employment tax also reduces your future retirement and disability benefits.