Quarterly Tax Calculator 1099 / Self-Employed

Estimate total annual taxes, equal quarterly targets, and catch-up amount due for the next quarter.

Projected annual net income ($)

Deduction/adjustment estimate ($)

Federal rate (%)

State/local rate (%)

Self-employment rate (%)

Next quarter to pay

Q1 payment already made ($)

Q2 payment already made ($)

Q3 payment already made ($)

Enter assumptions and run calculation.

Notes

This calculator is for planning estimates only. Tax law, deductions, credits, and safe-harbor rules vary. Use it as a cash planning model, then verify filing details with official guidance or a tax professional.