Sales Tax Calculator
Work out the sales tax on a price and the total, from a combined rate or from its state, county, city and district components.
Result
Enter price before tax to see the result.
https://calcgallery.com/consumption-tax/sales-tax-calculator/
Results are arithmetic from the amounts and rates you enter. The site publishes no tax rate, threshold or tipping convention, and rates vary by jurisdiction and change. Check the rate on your receipt, invoice or tax authority guidance, and confirm anything that matters with a qualified adviser. Read the full disclaimer
How to use the Sales Tax Calculator
- Enter the price before tax.
- Enter your sales tax rate, either as one combined figure or as its components.
- Read the tax and the total. The three lines shown always add up.
- For several items, open the items list; they are summed before the rate is applied.
How it is calculated
tax = subtotal × ratetotal = subtotal + taxThat is the whole formula. What makes a page like this right or wrong is not the multiplication, it is everything around it.
The rate is yours. This site stores no jurisdiction rates — no state table, no postcode lookup, nothing that would need maintaining. That is a deliberate decision: combined rates change whenever any one of their components changes, across thousands of jurisdictions, and a stale figure on an indexed page is worse than no figure at all. Enter the rate from your receipt or your state’s revenue department and the page is exact.
Components add up. If you know your rate as a state portion plus a county portion plus a city portion plus a special district, enter them that way and the page shows the combined figure it derived. 4.00% + 1.25% + 2.50% + 0.50% is 8.25%, and the tax is identical either way.
The rounding, which is where these pages usually go wrong
8.25% of 19.99 is 1.649175. It displays as 1.65, and the total displays as 21.64.
The question is what the total was computed from. This page keeps the exact 1.649175 and rounds once, at the end. A page that rounds the tax to 1.65 first and adds that can end up showing a subtotal, a tax and a total that do not reconcile — a visitor adding the lines on screen finds them a cent apart.
Every figure this page displays is derived from the unrounded value, so the lines always add up.
Several items
Open the items list and the prices are summed before the rate is applied. The single price field is ignored once there is at least one item.
That is a real distinction rather than a presentational one. Taxing each item separately and adding the rounded taxes gives a slightly different, usually higher, total, because each rounding goes up on its own. On a three-item bill of 50.48 at 8.25% it is 4.16 against 4.17. Jurisdictions differ on which is correct; this page does the first and says so rather than choosing quietly.
Practical tips
Check the combined rate against a receipt. It is the fastest way to confirm you have the right figure, and a receipt shows the rate that was actually charged.
A rate found online may be the state portion only. That is the single most common reason a calculated total comes out below what the till says.
Some items are taxed differently. Groceries, clothing and medicine are exempt or reduced in many places, and this page applies one rate to everything you give it. For a mixed basket, work out the taxable portion separately.
Tax is charged on the discounted price, not the ticket price, in most jurisdictions. Apply your discounts first, then the rate.
The total is what to check. If it does not match a receipt, the rate is usually the culprit rather than the arithmetic.
With your numbers
- $19.99 plus that tax is $21.64, and the three displayed lines add up because the total comes from the exact tax rather than the rounded one
- $19.99 × 8.25% = $1.65 tax
Quick reference
The rate is the one you entered. This site stores no jurisdiction rates, because a stale table produces confidently wrong answers.
| Example | Sales tax |
|---|---|
| 19.99 at 8.25% | $1.65 |
| 49.99 at 6% | $3.00 |
| 100 at 8.25% | $8.25 |
| 1,234.56 at 6.375% | $78.70 |
| 250 at 7.5% | $18.75 |
| 19.99 at 0% | €0.00 |
| 500 at 10% | €50.00 |
| 100 by components | €8.25 |
Common questions about the Sales Tax Calculator
- Why does this page not know my local rate?
- Because a rate table is a maintenance commitment, not a calculator. Combined rates change when any state, county, city or special district changes its own, which happens continually across thousands of jurisdictions. A table that is right today is confidently wrong next year, on a page that search engines have indexed. The rate you enter is the rate that applies to you; this page does the arithmetic around it.
- Why do the tax and total sometimes look a cent off elsewhere?
- Because a lot of calculators round the tax first and then add the rounded figure. 8.25% of 19.99 is 1.649175, which displays as 1.65. If the total is computed from 1.65 rather than from 1.649175, the displayed lines can disagree by a cent. This page carries the exact value and rounds once at the end, so the subtotal, tax and total on screen always reconcile.
- Should tax be worked out per item or on the whole basket?
- It depends on the jurisdiction, and the two give different answers. Applying the rate to the sum of the items is the common approach and is what this page does. Applying it to each item and summing the rounded taxes can come out a cent or two higher, because each rounding goes up independently. On a three-item bill of 50.48 at 8.25% that is 4.16 against 4.17.
- What is the difference between the combined rate and the components?
- Nothing, arithmetically: the components add up to the combined rate and the tax is the same either way. The choice exists because people often know their components — a state rate plus a county rate plus a city rate plus a transit district — without ever having added them up. The page shows the combined figure it derived so you can check it against your receipt.
- Is sales tax the same as VAT?
- Not in how it is collected. A retail sales tax is charged once, at the final sale to the consumer. A value-added tax is charged at every stage of production, with each business reclaiming the tax it paid on its inputs, so only the value added at each stage is taxed. The consumer pays the same headline rate either way, which is why the arithmetic on these two pages is shared even though the presentation is not.