New Hampshire Quarterly Tax Estimate Calculator — 2026

Estimate your quarterly tax payments to avoid IRS underpayment penalties. Get your personalized 1040-ES payment schedule.

Quick New Hampshire Tax Estimate

Based on New Hampshire's tax rates for 2026. Enter your details for a personalized calculation.

State Tax on $80K Profit
$0
SE Tax
$11,303.64
Effective Rate
20.2%
Marginal Rate
12%
Full New Hampshire Tax Calculator →

New Hampshire Tax Information

State Income TaxNone — no state income tax!
Sales Tax0%
LLC Filing Fee$0
Annual Report Fee$None
Standard DeductionN/A

New Hampshire has no state income tax. Self-employed only pay federal self-employment tax.

New Hampshire Quarterly Tax Deadlines

Q1
Apr 15
Q2
Jun 16
Q3
Sep 15
Q4
Jan 15

Frequently Asked Questions

When are quarterly taxes due in New Hampshire?
Federal quarterly deadlines: April 15 (Q1), June 15 (Q2), September 15 (Q3), January 15 (Q4). New Hampshire follows the same schedule for state estimated payments.
How do I calculate quarterly taxes in New Hampshire?
Estimate your annual income, subtract deductions, calculate tax, and divide by 4. Or use the safe harbor method: pay 100% of last year's tax (110% if AGI > $150K). Our calculator above does this automatically.
What happens if I miss a quarterly payment in New Hampshire?
The IRS charges interest on underpayments (currently 8% annual rate). New Hampshire may impose additional penalties. Even partial payments reduce your penalty.
Can I skip quarterly payments in New Hampshire?
You can skip if you expect to owe less than $1,000 total, had zero tax liability last year, or your withholding covers 90%+ of this year's tax. Otherwise, skipping triggers penalties.
How do I pay quarterly taxes online in New Hampshire?
Pay federal taxes via IRS Direct Pay (free), EFTPS, or credit card (fees apply). Pay New Hampshire taxes through the state Department of Revenue website.