Quarterly Tax Payment Estimator

Estimate your federal 1040-ES payments using IRS “Safe Harbor” rules to avoid underpayment penalties.

Calculator Inputs
This calculates your 100% / 110% safe harbor baseline.
Taxes already paid via your (or spouse’s) day job.
Payment Plan

Annual Target 100% of Prior Year

$0
Based on prior-year safe harbor rules.

Suggested Quarterly Payment

$0
Pay this amount 4x per year to avoid penalties.
Total Uncovered Liability $0

Estimated Due Dates

  • April 15
  • June 15
  • Sept. 15
  • Jan. 15 (Next Year)
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Disclaimer: This tool estimates federal safe harbor amounts only. It does not account for AMT, NIIT, irregular income (annualized method), or state taxes. Final payments depend on your specific tax situation. Consult Everwise Tax & Finance before filing.

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