ಡಿಸ್ಕೌಂಟ್ ಕ್ಯಾಲ್ಕುಲೇಟರ್

Work out any sale price in seconds

This discount calculator turns a price and a discount into the figures that actually matter: the sale price you'll pay, the amount you save, and the effective percent off. Enter an original price, pick a percentage or a flat amount, and everything updates live — no submit button, no sign-up, and nothing is uploaded. It's free, works on any device, and covers single discounts, stacked coupons, and sales tax in one place.

It's built for real shopping decisions: comparing two deals, checking a coupon, or working out the out-the-door total once tax is added. Tap a quick-percent button (10%, 20%, 25%, 30%, 40%, 50%, 70%) or drag the slider to see the price move as you go.

How to calculate a discount

The maths is short: discount amount = price × rate and sale price = price × (1 − rate). A $200 jacket at 30% off saves 200 × 0.3 = $60 and costs 200 × 0.7 = $140. To go the other way and find the percentage discount, divide the saving by the original price: an item cut from $120 to $90 saved $30, which is 30 ÷ 120 = 25% off.

A flat amount off works differently — it subtracts a set figure regardless of price. '$15 off' saves $15 whether the item is $40 or $400, so a percentage usually beats a flat coupon on expensive items and loses on cheap ones. The %/flat toggle on each row lets you compare both and pick the better deal.

Stacked, double and triple discounts

Most calculators stop at a single percent off. The trap with two or more discounts is adding the percentages — but they stack on the running price instead. A double discount of 20% then 10% gives $100 → $80 → $72, which is 28% off, not 30%. A triple discount of 30%, 20% and 10% comes to 49.6% off, not 60%. Calculator.net only handles one discount at a time and rapidtables.com's discount tool doesn't support stacking either.

Add a discount row for each markdown and this tool applies them in order, shows the running price at every step, and reports the equivalent single discount — so you always know the true total saving from a stacked or successive deal. This matters when retailers offer 'extra 20% off sale items' and you want to know the real total before you reach the checkout.

Add sales tax for the real total

The price on the tag is rarely the price at the register. Enter a sales-tax rate and the calculator applies it after the discount — the correct order — then shows the tax line and the grand total. A $100 item at 25% off is $75, and with 8% tax the final out-the-door price is $81.

That makes it a discount calculator with tax built in, handy whether you're checking a US sales-tax receipt, a UK VAT-inclusive price, a Canadian GST/HST line, or any after-discount levy. Enter your local tax rate once and keep it as you change prices and discounts.

Reverse a discount and compare alternatives

Sometimes you already know the answer and need the question. Reverse mode solves it two ways. Enter the original and the final price to get the exact percentage discount, or enter the final price and the percent off to back-calculate the original price before the discount. Paid $90 after 25% off? The list price was $120.

Compared to calculator.net's discount calculator (single discount, no stacking) and rapidtables.com (single percentage only), this tool stacks unlimited discounts, supports flat-amount coupons, adds tax, and includes reverse mode — all free, with no account required and no limit on how many calculations you run. Works just as well on Android and iPhone as on desktop.

Private, instant and free

There's nothing to install and no account to create. Every calculation — sale price, amount saved, stacked discounts, tax and reverse maths — runs locally in your browser, so the prices you type never leave your device. Copy a clean summary or a shareable link, and bookmark the discount calculator for the next sale. Unlike some calculator apps that show ads or require a subscription for stacked-discount features, everything here is free and private.

The three discount formulas and how to use them

Every discount problem is one of three types, each with its own formula. The most common is finding the sale price from a discount percentage: sale = original × (1 − discount/100). A $250 coat at 35% off costs 250 × 0.65 = $162.50. The second type is finding the discount percentage from two prices: % = (original − sale) / original × 100. An item marked down from $80 to $60 saved $20, so the discount is 20 / 80 × 100 = 25% off.

The third type — and the one that trips people up most — is recovering the original price from the sale price and the discount rate: original = sale / (1 − discount/100). If you paid $68 and the tag said '15% off', the original was 68 / 0.85 = $80. The classic error is doing this backwards: people assume that a 20%-off item can be recovered by adding 20% back to the sale price. Wrong. If $80 became $64 after 20% off, then 64 × 1.20 = $76.80 — not $80. You must divide by 0.80, not multiply by 1.20. Reverse mode in this calculator handles the correct division automatically, so you never fall into that trap.

Knowing which formula applies tells you immediately what to enter: two values always determine the third. Original + rate → sale price. Original + sale price → rate. Sale price + rate → original. The calculator exposes all three paths through its Normal and Reverse modes, so you don't have to remember which algebra to rearrange.

Why sequential discounts never add up the way you think

A 20% discount followed by an extra 10% off is not 30% off — it is 28% off. The reason is that the second discount applies to the already-reduced price, not the original. On a $100 item: 20% off leaves $80, then 10% off $80 takes off another $8, giving a final price of $72. The total saving is $28, which is an effective combined discount of 28%, not 30%. The general formula for stacking n successive discounts is: total effective discount = 1 − ∏(1 − dᵢ/100). For 20% and 10% that's 1 − (0.80 × 0.90) = 1 − 0.72 = 0.28, confirming 28%.

Retailers are acutely aware of this arithmetic, which is exactly why they advertise 'extra 10% off already-discounted prices' instead of simply raising the headline discount. The phrase 'extra 10% off' sounds more generous than '28% off' even though the two are mathematically identical. Three stacked discounts of 30%, 20%, and 10% work out to 1 − (0.70 × 0.80 × 0.90) = 49.6% off — more than ten percentage points below the naive 60% sum. Black Friday and end-of-season sales frequently layer a clearance markdown, a loyalty-member discount, and a coupon code; adding those three percentages together dramatically overstates the real saving.

The stacked-discount rows in this calculator apply the product formula at every step, showing both the running price after each markdown and the equivalent single discount percentage that one flat rate would have produced. Use it to cut through promotional language and confirm what you're actually saving before you reach the checkout.

The psychology behind discount pricing

Discounts rarely exist in a vacuum — they are constructed to feel larger than they are. Anchor pricing sets a high 'original' or 'compare at' price whose sole purpose is to make the sale price look dramatic. JCPenney faced Federal Trade Commission scrutiny over this practice in the 1990s, and Sears has faced similar reference-pricing lawsuits, because the 'was' price had never genuinely been the selling price for a meaningful period. Many jurisdictions now require that a reference price be the actual price charged for a minimum number of days before a discount is advertised — so when a sale tag looks too good, it sometimes is.

Even genuine discounts are framed to exploit perception. Left-digit anchoring explains why $99.99 outsells $100.00 far beyond what rounding alone would predict: buyers mentally file $99.99 under 'ninety-something', a full price tier lower. A 25% off sale and a 'buy 3 get 1 free' promotion are mathematically equivalent — in both cases you receive four units for the price of three — yet research consistently finds that the free-item framing generates higher purchase intent, because getting something for nothing triggers a stronger positive response than saving money on something you were buying anyway.

Colour and badge design compound these effects. Retail studies show that a red 'SALE' badge increases click-through rates by roughly 20% compared to the same discount shown in neutral black text — red is associated with urgency and limited supply even when no scarcity exists. Knowing this doesn't necessarily make you immune to it, but it does make a calculator a useful reality check: plug in the numbers rather than responding to the badge.

Trade discounts and cash discounts in B2B purchasing

Business-to-business pricing uses two distinct discount types that rarely appear in consumer retail. A trade discount is a reduction off the manufacturer's list price granted to a channel partner — distributor, wholesaler, or retailer — as compensation for their role in the supply chain. A product with a $100 list price might carry a chain discount of 20/10/5, meaning the distributor buys at 20% off list ($80), then takes a further 10% off that ($72), then a final 5% off ($68.40). The effective single discount is 1 − (0.80 × 0.90 × 0.95) = 31.6% off list, not 35%.

A cash discount is an incentive to pay an invoice quickly. The most common term you'll see on a B2B invoice is '2/10 net 30': take a 2% discount if you pay within 10 days, otherwise the full amount is due in 30 days. That 2% saving for paying 20 days early sounds modest, but the equivalent annual interest rate is approximately (2/98) × (365/20) ≈ 37.2%. Almost no business earns a guaranteed 37% annual return on its cash, which is why financial controllers almost always instruct accounts payable to take the early-payment discount whenever it is offered.

Understanding these mechanics matters even outside formal B2B settings. Freelancers who offer clients a small early-payment discount, or consumers who pay a credit-card balance immediately rather than carrying it at 20% APR, are applying the same principle: the time-value arithmetic of a discount is almost always more significant than it first appears.