Discount Calculator

Pay & money

Discount amount and final price.

You pay
₱800.00
₱200.00 off — 20.00% of the original
You save
₱200.00
Effective discount
20.00%

Calculation

  1. Original price₱1,000.00
  2. 20.00% off₱1,000.00 − ₱200.00₱800.00
  3. You save20.00% of the original₱200.00
  4. You pay₱1,000.00 − ₱200.00₱800.00

How to use

What it's for

Work out what you pay after a discount — or, if you know the price before and after, how big the discount really was.

Before you start

Have the price on the tag and the discount being offered, such as 20%. To check a discount instead, have the original price and the price you paid.

  1. Choose what you want to know

    Press Take a discount off to find the price after a discount. Press Work out the discount if you know both prices and want the percentage.

  2. Enter the original price

    Type the price before any discount in Original price, as a plain number: 1500, not ₱1,500.

  3. Enter the discount, or the sale price

    With Take a discount off, type the percentage in Discount % — 20 for 20% off. With Work out the discount, type what you paid in Sale price instead.

  4. Add a second discount, if there is one

    If an extra discount comes off after the first, as in "50% off, then another 20%", press + Stack another and type it in the new Then % box. The ✕ beside a box removes it.

  5. Press Calculate

    Press Calculate. The answer already updates as you type; the button brings it into view.

Reading the result

  • You pay: the price after every discount. With Work out the discount, the large figure is the Discount instead — the real percentage taken off.
  • You save: how many pesos came off the original price.
  • Effective discount: the total percentage off. With two or more discounts, The percentages added sits beside it — the plain sum, which is higher, because each discount comes off a price already reduced.
  • Calculation: the working, one line per discount, so you can check it against a receipt.

If it goes wrong

  • You pay shows ₱0.00: the price was typed with a comma or a peso sign, which this page reads as zero. Type the digits only.
  • The sale price is higher than the original: the two prices are the wrong way round. Put the tag price in Original price and what you paid in Sale price.
  • A senior citizen or PWD discount: it is not modelled here, because it works together with the VAT exemption rather than as a plain percentage off.

What this is

One discount off a price is a single multiplication. The two things worth a tool are stacking and reversing.

Stacked discounts do not add up: each cut applies to the price the one before it left, so 50% then an extra 20% is 60% off rather than 70%. And if all you have is the tag and the till price, the calculator runs the other way and tells you what actually came off.

Questions

Is "50% off then an extra 20%" the same as 70% off?

No, and this is the one worth knowing. The second cut applies to the already reduced price, so 50% then 20% is 60% off, not 70%. On ₱1,000 you pay ₱400, not ₱300. Adding the percentages always overstates the saving, and the gap widens with each extra cut.

Does the order of stacked discounts matter?

Not to the total. Multiplication commutes, so 30% then 15% lands on the same price as 15% then 30%. It can matter to a shop’s own rules about which promotions combine, but not to the arithmetic.

I only know the original and the sale price.

Switch to "Work out the discount" and enter both. That is the question you ask standing in the shop, and it is division rather than multiplication: what came off, over what it started at.

Does this handle senior citizen or PWD discounts?

No, deliberately. Those are statutory under RA 9994 and RA 10754, and they are not a plain percentage off the shelf price — they interact with VAT exemption, so the computation is different from what this tool does. Taking 20% off the tag would give you the wrong figure, so the tool does not offer it.

Is VAT included?

Whatever is in the price you type. This works on the number you give it and does not add or remove tax. Use the VAT Calculator to separate a VAT-inclusive price into its parts.

The maths

price
before this cut
(1 − rate)
once per discount
Stacking
₱1,000, 50% off then 20% off
₱1,000 − ₱500 ₱500.00
₱500 − ₱100 ₱400.00
Effective discount 60.00%
Why not 70%
50 + 20, added ₱300.00
50% then 20%, applied ₱400.00

₱100 apart on a ₱1,000 item. Stacking three 30% cuts is 65.7% off, not 90% — and no number of discounts under 100% ever reaches free.

Keep going

Important

Senior citizen and PWD discounts are statutory and are not modelled here — they interact with VAT exemption rather than being a plain percentage off. Nothing you type here is sent to our servers — the calculation runs entirely in your browser.