Percent Off Calculator

Q: What is 20% off $279?

The discount amount is $279 × 20 ÷ 100 = $55.80 , so the sale price is $279 − $55.80 = $223.20 .

Q: Is sales tax calculated before or after the discount?

Almost everywhere, tax is charged on the discounted price. Example: a $60 item at 10% off → $54.00 after discount; 7% tax = $3.78 ; checkout total = $57.78 . The Tax & Total tab computes this in one step.

Q: Why isn’t “20% off + extra 10% off” equal to 30% off?

Because the second 10% is taken from the already-discounted price, not the original. $100 → $80 after 20% off, then 10% of $80 (= $8) comes off → $72. You saved $28 total, a 28% effective discount — always slightly less than the naive sum. This “not additive” trap is the most common discount math mistake.

Sale price, discount amount, stacked discounts like “20% off + extra 10%”, tax-inclusive totals, reverse original-price solver, and side-by-side deal comparison — computed instantly, privately, in your browser.

Currency

Percent Off Calculator

Enter the original price and the discount percentage — get the sale price and exactly how much you save.

Original price

Discount % off

Sale price –

You save –You pay –

Original price–

Discount amount (you save)–

Sale price (you pay)–

Stacked Discounts

“20% off, then an extra 10% off” — each discount applies to the already-reduced price, in order. Add up to 4 steps, mix % and fixed-amount.

Original price

Discount steps (applied top → bottom)

Final price –

Total saved–

Effective combined discount–

Step	Off	Price after

Order matters when you mix % and fixed-amount discounts: a $10 coupon applied before a 20% discount saves more than the same coupon applied after.

Reverse Discount Solver

Work backwards from any two of the three numbers: original price, sale price, discount %.

Find original price Find discount % Verify a store's claim

Sale price you paid

Discount %

Extra stacked % (optional)

Original price –

Compare Two Deals

Which sale is actually better? Put both offers side by side.

Deal A

Price

% off

Deal B

Price

% off

	Deal A	Deal B
Final price	–	–
You save	–	–
Effective % off	–	–

Winner (lowest final price)–

Difference–

Discount + Tax Total

Discounts are applied before sales tax almost everywhere — this tab shows the true checkout total.

Original price

Discount % off

Sales tax / VAT %

Checkout total –

Price after discount–

Discount saved–

Tax amount–

You pay total–

Standard retail practice: tax is charged on the discounted price, not the list price. A few jurisdictions differ — check local rules for your purchase.

§ Percent-off formulas

Discount amount = Original price × (Discount % ÷ 100)
e.g. $279 × 20 ÷ 100 = $55.80

Sale price = Original price × (1 − Discount % ÷ 100)
e.g. $279 × 0.80 = $223.20

Original price (reverse) = Sale price ÷ (1 − Discount % ÷ 100)
e.g. $72 ÷ 0.72 = $100 (for 28% off)

Discount % from two prices = (Original − Sale) ÷ Original × 100
e.g. ($180 − $126) ÷ $180 × 100 = 30%

Stacked discounts = multiply the “keep” factors: Sale = Price × (1−d₁/100) × (1−d₂/100) × …
e.g. $100 × 0.80 × 0.90 = $72 → 28% combined, not 30%

§ Mental-math shortcuts

Discount	Shortcut	Save	Pay
10% off	move decimal one place	$8.00	$72.00
20% off	10% shortcut × 2	$16.00	$64.00
25% off	divide price by 4	$20.00	$60.00
50% off	divide price by 2	$40.00	$40.00
75% off	25% shortcut × 3	$60.00	$20.00

Shortcuts computed on an $80 item. Verify: $80 × 0.90 = $72.00; $80 × 0.80 = $64.00; $80 × 0.75 = $60.00; $80 × 0.50 = $40.00; $80 × 0.25 = $20.00.

§ Frequently asked questions

How do you calculate percent off?

Multiply the original price by the discount percentage divided by 100 to get the discount amount, then subtract it from the original price. Example: $100 at 20% off → discount = $100 × 20 ÷ 100 = $20.00, so you pay $80.00.

What is 20% off $279?

The discount amount is $279 × 20 ÷ 100 = $55.80, so the sale price is $279 − $55.80 = $223.20.

How do stacked discounts work — for example, 20% off then an extra 10% off?

Stacked discounts apply one after another to the already-reduced price, never added together. On $100: 20% off → $80.00; then 10% off $80 → $72.00. The combined effective discount is 28%, not 30%. Use the Stacked Discounts tab above for up to 4 sequential discounts, mixing % and fixed-amount steps.

How do I find the original price from a sale price?

Divide the sale price by (1 − discount% ÷ 100). Example: you paid $189.72 after stacked discounts of 20% then 15% → $189.72 ÷ (0.80 × 0.85) = $189.72 ÷ 0.68 = $279.00 original price. The Reverse Solver tab does this automatically, including stacked discounts.

How do I calculate the discount percentage from two prices?

Discount % = (Original price − Sale price) ÷ Original price × 100. Example: an item marked $180 selling for $126 → ($180 − $126) ÷ $180 × 100 = 30% off.

Is sales tax calculated before or after the discount?

Almost everywhere, tax is charged on the discounted price. Example: a $60 item at 10% off → $54.00 after discount; 7% tax = $3.78; checkout total = $57.78. The Tax & Total tab computes this in one step.

Which saves more: $10 off or 10% off?

It depends on the price — they break even at price = fixed amount ÷ (percent ÷ 100), here $10 ÷ 0.10 = $100. Above $100 the percentage wins: on a $200 item, 10% off → $180.00 while $10 off → $190.00. Below $100 the fixed amount wins.

Is “percentage discount” the same as “percent off”?

Yes — they are two names for the exact same calculation: sale price = original × (1 − discount% ÷ 100). A “percentage discount calculator” and a “percent off calculator” always give identical results, so this one tool covers both searches.

Why isn’t “20% off + extra 10% off” equal to 30% off?

Because the second 10% is taken from the already-discounted price, not the original. $100 → $80 after 20% off, then 10% of $80 (= $8) comes off → $72. You saved $28 total, a 28% effective discount — always slightly less than the naive sum. This “not additive” trap is the most common discount math mistake.

Do stores round the sale price?

Yes — registers round to the nearest cent at each step. Example: $89.99 with 40% off → $53.994, then an extra 15% off → $45.8949, which rings up as $45.89. This calculator shows exact values and rounds only for display, matching what the register charges to the cent.

What does “up to 70% off” mean?

It means 70% is the maximum discount in the sale — most items are discounted less. Always apply the actual percentage shown on the specific item's tag, not the headline “up to” number, when checking the deal with a calculator.

Can I use this calculator for business pricing?

Yes. Retailers use the Reverse Solver tab in the other direction: enter the sale price you want customers to see and the planned discount %, and it returns the list price to print on the tag. Combine it with the Tax & Total tab to quote tax-inclusive prices.

Free tool by NRTechStudio

Percent Off Calculator

Percent Off Calculator

Stacked Discounts

Reverse Discount Solver

Compare Two Deals

Discount + Tax Total

§ Percent-off formulas

§ Mental-math shortcuts

§ Frequently asked questions

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