ProlifyFree tools/Compliance & tax

Free non-resident withholding estimator

Estimate US federal withholding without confusing revenue with taxable profit.

For foreign founders and foreign payees. This does not cover payroll, real-estate withholding, partnership withholding, or state tax.

Federal rules verified 2026-07-13 from IRS Publication 515 and current IRS international-tax guidance. Estimate only;