- Choose add tax (pretax known) or reverse (total with tax known).
- Enter the amount and tax percent (or use a rate preset).
- Optional: set quantity for multi-unit totals.
- Read pretax, tax, total, and the rate comparison table.
Example: $100 · 8% add tax
What it is not
- Not a ZIP-code or city tax rate lookup
- Not legal advice on taxable goods
- Not a guarantee of register rounding
Frequently asked questions
What inputs do I need?
An amount (pretax or total), a tax percent, and optional quantity. Choose add or reverse mode.
Can I share a prefilled link?
Yes—use amount, tax, mode, and qty query parameters.
Sources linked above include U.S. government materials (for example CFPB, FDIC, NCUA, BLS, IRS) where noted. Sample math uses only labeled Nestfigure assumptions—not bank quotes, job offers, or personalized advice. Last reviewed: August 9, 2026.