Sales Tax Calculator Calculate sales tax instantly — with state/local rates, discount sequencing, and reverse tax lookup....
Sales Tax Calculator
Calculate sales tax instantly — with state/local rates, discount sequencing, and reverse tax lookup.
Formula for standard tax**:
$$\text{Total} = \text{Price} \times (1 + \text{Tax Rate})$$
Example: $100 item, 7.12% tax: $100 × 1.0712 = **$107.12** → Tax = **$7.12**
Reverse tax formula**:
$$\text{Pre-Tax} = \frac{\text{Total}}{1 + \text{Tax Rate}}$$
$107.12 ÷ 1.0712 = **$100.00**
✅ Note**: Discounts are *always* applied before tax (U.S. standard practice).
⚠️ Sales tax is **not just state-level**:
- State + County + City + Special Districts** • NYC: 4.0% state + 4.5% city + 0.375% MCTD = **8.875%**
- Nexus rules** post-*Wayfair* (2018): Remote sellers must collect tax if >$100K sales or 200 transactions in state
- Tax Holidays**: • Back-to-school (FL, TX, NY): Aug, tax-free clothing <$100 • Disaster prep (FL): June, generators <$1K tax-free
✅ 2025 Highest Combined Rates**:
- Tuba City, AZ: **10.5%**
- Chicago, IL: **10.25%**
- Seattle, WA: **10.1%**
| State | State Rate | Max Combined | Taxable Items |
|---|---|---|---|
| California | 7.25% | 10.5% | Most goods; SaaS taxable |
| New York | 4.0% | 8.875% | Clothing <$110 exempt |
| Texas | 6.25% | 8.25% | Food exempt; SaaS taxable |
| Oregon | 0% | 0% | No state sales tax |
📉 Avg. U.S. Combined Rate**: 7.12% (Tax Foundation, 2025)
💡 Digital Tax Alert**: 22 states now tax SaaS/digital goods (CA, NY, TX, WA, MA, etc.).
➡️ Standard
Enter item price and location — see tax and total.
➡️ Reverse
“My receipt says $107.12 — how much was tax?”
➡️ Tax-Inclusive
For restaurant bills, SaaS pricing: “$99/mo (tax included)” → what’s pre-tax?
You’ll get:
- Pre-tax, tax, and total amounts
- Effective rate (with discount)
- SVG tax breakdown pie
Note: Assumes discounts applied before tax (U.S. standard).