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Sales Tax Calculator

Enter an amount and your tax rate to get the tax and total — plus the pre-tax amount hidden inside a tax-inclusive price. Instant, no signup, your own rate.

Sales tax

Add it on — or back it out.

Enter an amount and a tax rate. See the tax and total when adding tax, plus the pre-tax amount hidden inside a tax-inclusive price.

→ With tax
Total with tax
$108.25
Tax amount
8.25% of $100
$8.25
If that amount included tax
pre-tax · $7.62 is tax
$92.38
Math: tax = amount × 8.25% · pre-tax = amount ÷ (1 + 8.25%)
From numbers to a business

Running the numbers on a product business? Every Business-in-a-Box ships the pricing + bookkeeping templates to keep the rest straight.

Reviews

We’re early. Real reviews only.

Apex Digital launched recently. Every purchase comes with a request for honest feedback through our help center. When real buyers write real reviews, they go here — with their permission, by name. Until then, this section stays empty. No fakes. No stock photos. No bullshit.

Used something from the catalog? Leave honest feedback →

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