Calculate your quarterly estimated tax payments to avoid IRS underpayment penalties. Supports current-year and safe harbor methods.
per quarter
| Q1 Due — April 15 | $4,388 |
| Q2 Due — June 15 | $4,388 |
| Q3 Due — Sept 15 | $4,388 |
| Q4 Due — Jan 15 | $4,388 |
| Estimated Total Tax | $19,501 |
| SE Tax Component | $11,304 |
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Current Year: Pay 90% of expected tax ÷ 4
Safe Harbor: Pay 100% of prior year tax ÷ 4
Q1 (Jan–Mar): April 15. Q2 (Apr–May): June 15. Q3 (Jun–Aug): September 15. Q4 (Sep–Dec): January 15 of the following year.
Pay either 100% of last year's tax liability (110% if AGI > $150k) OR 90% of this year's expected tax. The safe harbor method uses prior year's liability.
The IRS charges an underpayment penalty (currently ~8% annualized). Pay as soon as possible to minimize the penalty.
Yes if you expect to owe $1,000+ after subtracting withholding. W-2 employees with side income may also need to make estimates.
Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.