Estimate your self-employment tax in Dover for 2026: the 15.3% SE tax, the deductible half, federal income tax, and quarterly payments.
Last updated: May 2026 · Data: MIT Living Wage Calculator, C2ER, U.S. Census, BLS, IRS, state and city sources
Dover self-employed workers pay federal SE tax and federal income tax, but no New Hampshire state income tax. New Hampshire has no state income tax on wages or salaries. The state previously taxed interest and dividend income at 5%, but that tax was fully phased out as of January 2025. New Hampshire also has no general sales tax.
| Net Profit | SE Tax | Half-SE Deduction | Total Est. Tax | Per Quarter |
|---|---|---|---|---|
| $30,000 | $4,239 | $2,119 | $5,546 | $1,387 |
| $50,000 | $7,065 | $3,532 | $10,602 | $2,651 |
| $75,000 | $10,597 | $5,299 | $17,545 | $4,386 |
| $100,000 | $14,130 | $7,065 | $26,189 | $6,547 |
| $150,000 | $21,194 | $10,597 | $43,898 | $10,975 |
Single filer, standard deduction. Total tax = SE tax + federal income tax. Estimates only.
Dover, New Hampshire (distinct from Dover, Delaware) is the oldest permanent settlement in the state and a fast-growing Seacoast city, with an economy built on healthcare, technology, manufacturing, and its location near Portsmouth and the University of New Hampshire.
| Local Metric | Dover (2026 estimate) |
|---|---|
| Metro population | 33,000 |
| County / jurisdiction | Strafford County |
| Cost of living index (US avg = 100) | 108 |
| MIT living wage, single adult | $21.00/hour |
| MIT living wage, one earner supporting a family of four | $42.50/hour |
| Applicable minimum wage | $7.25/hour |
| Average rent, 1-bedroom | $1,550/month |
| Average rent, 2-bedroom | $1,900/month |
| Median home price | $430,000 |
| Median household income | $78,000/year |
| Combined sales tax rate | 0% |
| Effective property tax rate | 1.95% of value/year |
Local figures are 2026 estimates compiled from the MIT Living Wage Calculator, the C2ER Cost of Living Index, U.S. Census and Zillow housing data, and city and county sources. Verify current figures before relying on them.
The federal SE tax rate is 15.3% (12.4% Social Security plus 2.9% Medicare), the same in Dover as everywhere. It applies to 92.35% of net profit; Social Security stops at $176,100 of net earnings.
New Hampshire has no state income tax, so self-employment income earned in Dover is not subject to state tax, only federal SE and income tax.
On $60,000 of net profit in Dover, estimated total tax (SE plus federal) is about $13,131, or roughly $3,283 per quarter.
Dover does not levy a local self-employment or income tax. Business owners should still budget for any required local license.
Business expenses that lower net profit (equipment, software, home office, mileage) reduce both SE tax and income tax. The deductible half of SE tax, self-employed health insurance, and retirement contributions reduce income tax.