New Hampshire Side Hustle Tax Guide 2025
Everything side hustlers in New Hampshire (NH) need to know about taxes, deductions, and quarterly payments.
New Hampshire Tax Overview
No state income tax on earned income. Interest and dividends tax was fully repealed in 2025.
Since New Hampshire has no state income tax, your side hustle income is only subject to federal income tax (10–37%) and SE tax (15.3%).
Self-Employment Tax
Every side hustler pays 15.3% SE tax on net earnings — 12.4% Social Security + 2.9% Medicare. You can deduct half from adjusted gross income.
Quarterly Estimated Payments
Federal quarterly payments required if you owe $1,000+ (Form 1040-ES). Due: April 15, June 15, September 15, January 15.
Common Deductions
- Home office ($5/sq ft, max 300 sq ft)
- Equipment and software (Section 179)
- Vehicle (67¢/mile in 2024)
- Health insurance (self-employed deduction)
- Half of SE tax
- Retirement (SEP-IRA or Solo 401(k))
FAQ
Does New Hampshire tax side hustle income?
No state income tax. Federal SE tax (15.3%) always applies.
Do I need quarterly payments?
Yes, federal. No state payments needed.
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