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Sales tax calculator

Add sales tax to a price and see the tax amount and total.

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The Sales tax calculator turns Price before tax, Tax rate (%) into Tax amount, Total with tax, instantly and for free. For instance, with Price before tax = $100.00 and Tax rate (%) = 8 it returns Tax amount = $8.00 and Total with tax = $108.00.

How to use it

  1. Enter your values: Price before tax, Tax rate (%).
  2. Read the result instantly: Tax amount, Total with tax.

Frequently asked questions

What does the Sales tax calculator actually compute?

It takes Price before tax and Tax rate (%) and derives Tax amount and Total with tax from them. The calculation is live as you type, so the result updates on every change.

What information do I need to provide?

2 values: Price before tax ($) and Tax rate (%). Nothing else is required — no account, no file upload.

Can you show a worked example?

With Price before tax = $100.00 and Tax rate (%) = 8, the calculator returns Tax amount = $8.00 and Total with tax = $108.00. Those figures come from running this exact tool, so you can reproduce them by entering the same values.

What happens if I enter larger values?

It moves a lot. Using Price before tax = $110.00 and Tax rate (%) = 8.8 instead, Tax amount goes from $8.00 to $9.68 — which is why it is worth testing a few scenarios rather than trusting a single figure.

What does it give for smaller values?

Scaled down to Price before tax = $90.00 and Tax rate (%) = 7.2, Tax amount comes out at $6.48. The relationship is worth checking at both ends before you rely on a single result.

When would I actually use this?

Before and after a campaign: turning a target into a daily budget, comparing two channels on the same basis, and deciding whether the return justifies continuing.

What is the most common mistake?

Judging ROAS without subtracting the cost of goods. A 3× return on ad spend is a loss whenever the margin is under a third — the ratio says nothing about profit on its own.

What is the difference between the Sales tax calculator and the Lead-to-customer rate calculator?

This one returns Tax amount and Total with tax; the Lead-to-customer rate calculator returns Lead-to-customer rate. That is the whole difference — open the one whose figure you need.

Is there a tool for the next step?

ARPU calculator is the closest one after this: Compute the average revenue per user from total revenue and number of users.

What else is worth having open alongside it?

Average order value (AOV) calculator and Impressions from reach and frequency — they come up in the same task often enough to be worth a second tab.

Further reading

All guides →
ComparisonSales Tax vs VAT: The DifferenceBoth tax what you buy, but collect it differently. Here's how US sales tax and VAT work, and what each means for the price you actually pay.GuideInvoicing a Client in Another EU Country: VAT, the Reverse Charge and the One Stop ShopTwo regimes get merged into one paragraph everywhere, and they behave nothing alike. Selling a service to a business abroad and selling to a private customer abroad are governed by different articles, different thresholds and different filings. Here is the split, with the current figures.GuideThe Price You See and the Price You Sign: Building an Out-the-Door NumberAn advertised $32,000 car leaves the lot at $36,399 before any trade-in — $2,324 of sales tax, $500 of doc fee, $375 of title and registration and $1,200 of add-ons. Strip the add-ons and the irreducible gap is $3,115, or 9.73 percent of the sticker.ComparisonVAT Rates in Europe Compared: Standard, Reduced and ZeroStandard rates run from 17 percent in Luxembourg to 23 percent in Ireland and Portugal, with Switzerland outside the EU at 8.1 percent. The full table, with reduced and zero rates and an honest as-of date.How-toHow to Calculate VAT (Add and Remove It)VAT is a percentage added to a price. Here's how to add VAT to a net price, remove it from a gross price, and find the tax amount — with examples.How-toHow to Calculate a Discount (and the Final Price)A discount is a percentage off a price. Here's how to find the amount saved and the final price — plus how to stack discounts and spot fake deals.