TetraKitsSales Tax Calculator
Price products, reconcile receipts, or compare checkout totals with accurate US sales tax math. Add tax to a net price or remove tax from a tax-inclusive total — with one-click presets for California, New York, Texas, Florida, and Washington.
Read: Sales Tax Calculator Guide: Add & Remove US Sales Tax →
- Free to Use
- No Signup
- Privacy Friendly
How to calculate sales tax
- 1
Add or remove tax
Select Add tax when you have a pre-tax price. Select Remove tax when you have a receipt total and need the net amount.
- 2
Enter amount and rate
Type the dollar amount and tax percentage, or click a state preset. Rates are approximate state-level averages — local rates may differ.
- 3
Read the breakdown
See net price, tax amount, and gross total. For tips, use the tip calculator; for VAT/GST, see VAT or GST.
Sales tax formulas
Example: $100 net + 8.25% tax → $8.25 tax, $108.25 gross.
Why Use This Tool?
Both Directions
Add sales tax forward or extract it from a receipt total.
State Presets
One-click rates for California, New York, Texas, Florida, and Washington.
Shopping Ready
Quick totals for in-store tags and online checkout.
Local Only
Your figures never leave the browser.
Frequently Asked Questions
How do I add sales tax to a price?
Select Add tax, enter the net (pre-tax) amount and rate. Gross = net × (1 + rate/100). Tax = gross − net. Example: $100 + 8.25% → $8.25 tax, $108.25 gross.
How do I remove sales tax from a receipt?
Select Remove tax, enter the tax-inclusive total. Net = gross ÷ (1 + rate/100). Tax = gross − net.
Are the state presets exact?
Presets use approximate state-level rates. California, New York, Texas, Florida, and Washington also have local add-ons — enter a custom rate for your city if needed.
Is sales tax the same as VAT?
Both tax consumption, but US sales tax is added at checkout and varies by state and locality. VAT is common in Europe and shown on B2B invoices — use our VAT calculator for that.
Is this sales tax calculator free?
Yes. Unlimited use with no signup; all math runs in your browser.
US Sales Tax Without Guesswork
E-commerce sellers pricing products, shoppers comparing in-store tags, and freelancers expensing receipts all need clean net/tax/gross splits. State presets plus custom rates handle real-world US sales tax math in both directions.
