Stack a discount, tax, and tip on a single price and see the running total after each step, in the exact order you apply them.
The order percentages get applied in actually changes the final number. A 20% discount followed by 8% tax gives a different result than tax first, then discount. This calculator shows the running total after each step so you can see exactly where the money goes.
Discount & Tip Stacker
Starting Price:
Discount % (optional):
Tax % (optional):
Tip % (optional):
After Discount: —
After Tax: —
After Tip (Final Total): —
Why Order Matters
Percentages don’t stack the way people expect. Applying a discount, then tax, then a tip on the new total gives a different final number than applying all three to the original price separately. This calculator applies each step to the running total in order: discount first, then tax on the discounted price, then tip on that after-tax total, matching how most receipts actually work.
How to Use This Calculator
- Starting Price: enter the original price before any adjustments.
- Discount %, Tax %, Tip %: fill in any that apply; leave any unused field blank.
- Click Calculate to see the running total after each step.
Example: a $100 item with a 20% discount becomes $80. Add 8% tax and it’s $86.40. Add a 15% tip on that total and the final amount is $99.36.
Did You Know?
- In many U.S. states, sales tax is calculated on the discounted price, not the original price, which is exactly how this calculator applies it.
- Tipping on the pre-tax or post-tax amount is a matter of local custom rather than a fixed rule; this calculator tips on the after-tax total by default.
Frequently Asked Questions
Does the order of discount, tax, and tip change the total?
Yes. Each percentage is applied to the running total from the previous step, so the sequence affects the final number, unlike simply adding all the percentages together.
Can I skip a field if it doesn’t apply?
Yes, leave any field blank and that step is skipped, moving straight to the next one.
Why isn’t stacking three 10% changes the same as one 30% change?
Because each percentage is calculated on a different, larger or smaller running total rather than the original number, three stacked 10% increases compound to just over 33%, not exactly 30%.