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Sales tax basics
Learn how tax-inclusive prices, tax rates, and reverse calculations fit together before you check a receipt.
Use the tax calculatorReverseSalesTax.com guides
Practical guidance for clearer decisions.
Straightforward explanations for sales tax, pricing, margins, and the numbers behind everyday business choices.
A useful reading path
Start with the question in front of you.
01Understand the tax or cost.
02Check the number with a tool.
03Plan the next practical step.
What the guides will cover.
Clear starting points for the tax and business questions that shape a final number.
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Pricing and margins
See how variable costs, selling price, and contribution margin affect the sales level your plan needs.
Explore break even planning03
Small business planning
Build a clearer view of the numbers behind a monthly target, a new price, or a more confident next step.
See the toolsNeed the number before the article?
Use a calculator first, then return when you want the explanation behind the result.
Sales Tax Basics
How to Calculate Sales Tax Percentage From a Total
If you know the pre-tax price and tax amount, you can calculate the sales tax percentage with one simple formula.
August 28, 2026
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State Sales Tax
California Sales Tax Calculator
Use the California sales tax calculator to reverse a receipt total at the 7.25% base rate and find the price before tax, with combined rates for major cities.
August 28, 2026
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State Sales Tax
Ohio Sales Tax Calculator
Ohio has a 5.75 percent state sales tax, with county and transit additions that can change the combined rate by location.
August 28, 2026
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State Sales Tax
States Without Statewide Sales Tax and Local Tax Rules
Alaska, Delaware, Montana, New Hampshire and Oregon have no general statewide sales tax. Alaska can still have local sales taxes.
August 27, 2026
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State Sales Tax
Florida Sales Tax Calculator
Florida’s general state sales tax rate is 6 percent, while many counties add a discretionary surtax. Learn how the combined rate works.
August 27, 2026
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State Sales Tax
Texas Sales Tax Calculator
Texas has a 6.25 percent state sales tax, while local jurisdictions can add tax. Learn how the combined rate is found for an address.
August 27, 2026
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