1099 & Quarterly Estimated Tax Calculator

For self-employed and 1099 workers — estimate what to send the IRS each quarter.

2026 federal rates

Expected annual net self-employment profit (income minus business expenses) $ Filing status

+ Other income & payments (optional)

Other household taxable income (W-2 wages, spouse, interest) $ Federal tax already withheld / paid this year $ Apply the 20% QBI deduction (most self-employed qualify)

Self-employment tax$0.00

Federal income tax$0.00

Total annual federal tax$0.00

Less already paid / withheld$0.00

Pay each quarter
total ÷ 4 $0.00

2026 due dates: Apr 15 · Jun 15 · Sep 15, 2026 · Jan 15, 2027

Safe harbor: to avoid an underpayment penalty, aim to pay at least 90% of this year's tax, or 100% of last year's tax (110% if your prior-year AGI was over $150,000) — whichever is lower.

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