Ouncery Prototype

At the store

See what the tax rate you type adds

The extra line on the receipt

The sticker and the receipt can differ by a percent you already know.

  • Calculated from what you enter
  • About 2 minutes
  • Easy

The short version

  • For someone who already knows the percent to apply.
  • It shows the tax and the total.
  • It does not know whether the price already includes that percent.

The moment

You have a price in front of you and a percent you were told, or one you want to try. The page only multiplies those two.

After this, you can see the tax and the total from a price and a percent you type.

Your guess first

This price is made up. At 8 percent, how much tax do you think is added to $10?

Made-up price

$10.00

Try 8 percent in your head first

Why the number hides

A sticker often shows the price before a separate percent. The receipt is where that percent becomes cents. This page does the multiplication only. It does not know the rules at your store.

Now run your own numbers

See what the tax rate you type adds

The answer there is free. Not on sale yet: one optional pass for the whole site, pay what you can, for a dispute letter, a heating-aid checklist, and cancellation scripts.

Do this next

  1. Read the price you want to start from.
  2. Type the percent you want applied.
  3. Read the tax and the total.
  4. If the tag already includes tax, don't add it again.
  5. Try another percent if you were given a range.

Who this will not work for

  • A looked-up sales tax for a city or state.
  • A price that already includes the tax, unless you want to add a percent again on purpose.
  • Advice about what you owe.

A pitfall

If the price tag already includes the tax, adding a percent again counts it twice. Check which price you are holding.

How this was calculated

Tax = price times the percent you type. Total = price plus tax. Rounded to the nearest cent.

This is arithmetic on the numbers you type. It doesn't look up a tax rate.

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