Quarterly Tax Calculator — Federal + State Estimated Taxes for Freelancers

Your numbers

Expected annual net income (Schedule C profit)

Business revenue minus expenses — the profit you report.

Filing status

State

State tax is a rough estimate — a single approximate marginal rate.

Include QBI deduction (20% qualified business income)

§199A simplified estimate — assumes a non-SSTB business with no W-2 wages paid. TY2025 thresholds: $197,300 single / $394,600 joint.

Safe harbor mode

Prior-year total tax

Last year’s total tax from your return (Form 1040 line 22 area).

Prior-year AGI

Over $150,000 ($75,000 married filing separately)? The prior-year safe harbor becomes 110%.

Minimum 90% of this year Prior year

Set aside per quarter

—

Federal / quarter

—

State / quarter

—

Safe harbor comparison

Payment calendar

Tax year Pay via IRS Direct Pay ↗ Pay via EFTPS ↗

Due dates follow the IRS rule: a date falling on a weekend or legal holiday moves to the next business day. Always confirm on irs.gov before paying.

Not included in this estimate