Sales Tax Tool
Reverse Sales Tax Calculator
Direct Answer
Use this reverse sales tax calculator when you know the final price including tax and want to estimate the pre-tax amount plus the embedded sales tax.
Instant Calculator
Calculate Sales Tax
Beverly Hills, California combined rate
9.5%
Example ZIP-level estimate for Beverly Hills, California.
- State tax
- $7.25
- Local tax
- $2.25
- Total tax
- $9.50
- Final amount
- $109.50
Reverse Tool
Reverse Sales Tax Calculator
- Pre-tax amount
- $100.00
- Tax amount
- $9.50
- Final amount
- $109.50
How Reverse Sales Tax Works
Reverse sales tax starts with a tax-included total and a known sales tax rate. The pre-tax amount equals the final total divided by one plus the rate. If you do not know the rate, start with the US sales tax calculator or the sales tax by ZIP code guide first.
When To Use This Tool
This tool is useful for receipts, tax-included price tags, point-of-sale checks, and invoice review. For compliance decisions, confirm the rate, product taxability, and any sales tax exemptions before relying on the result.
FAQ
Sales Tax Questions
What is a reverse sales tax calculator?+
A reverse sales tax calculator starts with the final amount including tax and estimates the pre-tax price and tax portion.
How do you remove sales tax from a total?+
Divide the tax-included total by one plus the sales tax rate. The difference between the final total and pre-tax amount is the embedded tax.
Is reverse sales tax the same as a ZIP sales tax estimate?+
No. Reverse sales tax uses a known rate. ZIP sales tax lookup estimates the rate from a location before calculating tax.
Related Tools
Use these pages to verify rate logic, ZIP accuracy, ecommerce obligations, and state-level data before relying on an estimate.