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Reverse Tax Calculator for California
California receipts combine state, county, city, and district taxes. Reverse your total using the combined rate on the receipt—not the 7.25% base alone.
Live calculation
Reverse Tax Calculator for California
California receipts combine state, county, city, and district taxes. Reverse your total using the combined rate on the receipt—not the 7.25% base alone.
Step 2 — Your breakdown
Original price (before tax)$0.00
Tax amount$0.00
Final price (verified)$0.00
Explain calculation
We reverse the tax using the standard formula:
Convert the rate to a decimal (e.g. 8.25% → 0.0825).
Divide the final price by (1 + rate) to get the pre-tax amount.
Subtract pre-tax from final to get the tax portion.
Enter a total and tax rate to see your breakdown.
Tool focusCalifornia
Example rate7.25%
Sample pre-tax$100.93
California combined rates
Many metros land between 8.25% and 10.75%. LA, San Francisco, and San Diego shoppers should use the rate printed on the receipt or CDTFA lookup for the delivery address.
Worked example: $162.38 at 9.5% → Original = $148.29, tax = $14.09.
Worked reverse tax example
You paid $108.25 including 7.25% sales tax and need the merchandise amount for bookkeeping.
> Convert rate: 7.25% ÷ 100 = 0.0725
> Add 1: 1 + 0.0725 = 1.0725
> Divide: $108.25 ÷ 1.0725 = $100.93
> Tax portion: $108.25 − $100.93 = $7.32
✓
Pre-tax: $100.93 | Tax: $7.32 | Total: $108.25
Compliance reminder
Reverse math is for splitting receipts and estimates—it does not replace filing obligations, nexus analysis, or professional tax advice. Confirm rates with your state revenue department or marketplace reports before remitting.
Use the full combined rate on your receipt — state, county, city, and district. Our CA state page defaults to the 7.25% base; adjust upward for your location.
Most groceries are exempt, but hot prepared food and certain beverages are taxable. Reverse math still applies to any tax-included total you actually paid.
Most groceries are exempt; hot prepared food is often taxable. Use reverse math only on tax you actually paid.