THE BASICS TOOL

Safe Harbor & Quarterly Payment Calculator

Not sure? Use the bracket for your total taxable income, from last year's return.
Line 22 on last year's Form 1040. Adds the prior-year safe harbor test to your results.
Self-employment tax (15.3%)$0
Estimated income tax$0
Total estimated tax$0
Minimum safe harbor payment: $0 for the year ($0/quarter) — pay at least this much and you're penalty-proof, even if your final bill is higher.
Your quarterly payment$0
Apr 15, 2026$0
Jun 15, 2026$0
Due in 5 daysSep 15, 2026$0
Jan 15, 2027$0

This is a planning estimate, not a tax return — it assumes all your income is self-employment income and doesn't account for a W-2 job's Social Security wage base. If you also have W-2 wages, use the Deep Dive's Social Security tool for a more precise number. Talk to a tax pro before you rely on this for filing.

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