Discount Calculator - Calculate Sale Price

Original Price

₹

₹1₹1,00,00,000

Discount

0100

You Save

₹200

Final Price

₹800

You Pay per ₹100 MRP

What is a Discount?

A Discount Calculator computes the amount saved, the final price payable, and the effective rate per ₹100 of original price when any percentage discount is applied to a listed price. It is one of the most practically useful everyday calculators — virtually every retail transaction in India involves a discount, and comparing the real value of competing offers requires instant arithmetic.

In India, the concept of MRP (Maximum Retail Price) gives discounts a firm legal reference point. MRP is the highest price inclusive of all taxes at which a product may be sold to the end consumer, mandated under the Legal Metrology Act. When a brand says "40% off MRP", it means a 40% reduction from the ceiling price — not from a retailer's arbitrary sticker price, making Indian discount claims more reliably comparable than in markets without price controls.

The discount formula is simple: Discount Amount = Original Price × Discount% ÷ 100, and Final Price = Original Price − Discount Amount. But in practice, shoppers face two computational challenges: comparing discounts across different price points (is 35% off a ₹500 shirt a better deal than 45% off a ₹800 shirt?) and reverse-calculating the original price from a sale price (if you paid ₹2,100 after "30% off", was the ₹3,000 MRP genuine?).

This calculator addresses both. The primary output — You Save — shows the rupee amount of the discount. The secondary output — Final Price — shows exactly what you pay. The third output — You Pay per ₹100 MRP — provides a normalised deal metric: 30% off means you pay ₹70 per ₹100 of MRP, regardless of whether the item costs ₹500 or ₹50,000. This normalised figure is the cleanest way to compare discounts across products and platforms.

For the selling side of a transaction, the Profit & Loss Calculator shows whether the discount offered still leaves adequate margin above cost price.

How to use this Discount calculator

Enter the Original Price — the listed or MRP price before any discount. Use the slider for approximate values, or type the exact amount in the field. Range: ₹1 to ₹1 crore.
Set the Discount percentage — move the Discount slider or type the percentage. Common discount tiers are 10%, 20%, 30%, and 50%. For stacked discounts (e.g., 20% + 10%), note that the effective combined discount is 1 − (0.80 × 0.90) = 28%, not 30% — run this calculator separately for each stage.
Read You Save and Final Price — the primary outputs update instantly. You Save is the rupee discount; Final Price is what you actually pay.
Compare using the third output — "You Pay per ₹100 MRP" is the quickest cross-platform comparison metric. The lower this number, the better the deal.
Verify MRP for sale events — if a seller claims an item "was ₹5,000, now ₹3,000", enter ₹5,000 as Original Price and 40% (implied discount = (5000-3000)/5000 × 100) as Discount% to verify the numbers add up correctly.

Formula & Methodology

Discount Amount:
Discount Amount = Original Price × Discount% ÷ 100

Final Price:
Final Price = Original Price − Discount Amount

You Pay per ₹100 MRP:
Effective Rate = 100 − Discount%

Variables:
- Original Price (P) = Listed / MRP price before discount (₹)
- Discount% (d) = Percentage reduction (0–100)

Worked example — ₹4,500 original price, 35% discount:

Discount Amount = ₹4,500 × 35 ÷ 100 = ₹1,575Final Price = ₹4,500 − ₹1,575 = ₹2,925You Pay per ₹100 MRP = 100 − 35 = ₹65

Worked example — successive discounts (20% then 10%):

After 20%: ₹4,500 × 0.80 = ₹3,600After 10% on ₹3,600: ₹3,600 × 0.90 = ₹3,240Effective Discount = (₹4,500 − ₹3,240) ÷ ₹4,500 × 100 = 28%, not 30%

Assumptions and limitations:
- This calculator models a single flat percentage discount. For stacked or tiered discounts, apply the calculator iteratively (output final price becomes next original price)
- GST impact: Final Price as shown does not add GST — in Indian retail, MRP is always GST-inclusive, so no additional tax is levied on consumers beyond the discounted price
- The discount is clamped to the range 0–100% — a discount above 100% (selling below zero) is not modelled

Frequently Asked Questions

How do I calculate the discounted price from an original price and discount percentage?

Discount Amount = Original Price × Discount% ÷ 100; Final Price = Original Price − Discount Amount. For a ₹2,000 item with 25% off: Discount Amount = ₹2,000 × 25 ÷ 100 = ₹500; Final Price = ₹2,000 − ₹500 = ₹1,500. The Discount Calculator does this in real time as you move the slider — you see both the amount saved and the final payment simultaneously.

How do I find the original price (MRP) if I only know the discounted price and discount percentage?

Use the reverse formula: Original Price = Final Price ÷ (1 − Discount% ÷ 100). If you paid ₹1,500 after a 25% discount, the MRP was ₹1,500 ÷ (1 − 0.25) = ₹1,500 ÷ 0.75 = ₹2,000. This reverse calculation is useful when comparing online and offline prices — if an app shows 'you saved ₹400' after a '30% off' deal, the MRP was ₹400 ÷ 0.30 = ₹1,333, confirming whether the original price was fair.

What does MRP mean in India, and how does it affect discounts?

MRP (Maximum Retail Price) is the ceiling price inclusive of all taxes (including GST) beyond which no seller in India can legally charge a customer. Under the Legal Metrology (Packaged Commodities) Rules, 2011, selling above MRP is a punishable offence. Discounts are offered on MRP, meaning a '40% off' tag genuinely reflects a reduction from the highest legal price — making Indian MRP-based discounts more reliable benchmarks than retail prices in markets without price controls.

Is GST calculated on the discounted price or the original price in India?

Under Indian GST law, tax is levied on the transaction value — the actual price paid after discount, not the MRP or the pre-discount price. So if a phone's MRP is ₹30,000 (inclusive of 18% GST) and it is discounted to ₹24,000, GST is charged on ₹24,000. However, if the discount is offered post-sale (like a cashback or incentive unrelated to the original invoice), GST treatment can differ and the seller should issue a credit note. In normal retail transactions, the discounted price is the tax base.

What is the 'you pay per ₹100 MRP' metric, and how do I use it to compare deals?

The 'effective rate per ₹100 MRP' = 100 − Discount%. For a 30% discount you pay ₹70 per ₹100 of MRP; for a 45% discount you pay ₹55. This metric lets you compare deals across different price points instantly — a ₹500 shirt at 40% off (pay ₹60 per ₹100) is a better deal than a ₹2,000 shirt at 35% off (pay ₹65 per ₹100), regardless of which gives you more savings in absolute rupees.

What is the difference between a trade discount and a cash discount?

A trade discount is a reduction given by a manufacturer or wholesaler to a reseller, expressed as a percentage of the catalogue price — it determines the dealer's buying price and is never shown on the invoice to the end customer. A cash discount is a reduction offered to any customer for prompt payment (e.g., '2% off if paid within 10 days'). Trade discounts are used to compute the Profit & Loss for traders; cash discounts affect cash flow and are recorded as financial income or expense.

What does 'flat 30% off' mean in Indian e-commerce, and should I trust it?

A 'flat 30% off' tag means every item in the category is discounted by exactly 30% from its listed price — there is no variable or tiered discount. In Indian e-commerce, the Consumer Protection (E-Commerce) Rules, 2020 require that any discount reference price (e.g., 'was ₹5,000, now ₹3,500') must be verifiable as the actual price charged in the recent past. The CCPA and the Department for Promotion of Industry and Internal Trade (DPIIT) have issued advisories against inflated reference prices, so a flat% deal is worth comparing against other platforms before purchase.

How do multiple successive discounts work? Is 20% + 10% off the same as 30% off?

No — successive discounts are not additive. A 20% discount followed by a 10% discount on the reduced price equals an effective discount of: 1 − (1 − 0.20)(1 − 0.10) = 1 − 0.72 = 28%, not 30%. On a ₹1,000 item: after 20% off you pay ₹800, then 10% off ₹800 = ₹80 more off, leaving ₹720 — a saving of ₹280, not ₹300. This is why stacked coupon codes or buy-one-get-one deals require careful calculation rather than simple addition.

What is the difference between discount and rebate?

A discount is a reduction applied at the point of sale before payment is made — the invoice itself shows the reduced price. A rebate is a partial refund given after the purchase is complete, often conditional on meeting a purchase threshold, submitting proof, or waiting a set period. In India, cashback offers on credit cards or apps are typically rebates (credit applied after transaction). The tax treatment also differs: a sales discount reduces taxable value, while a rebate may need to be treated separately under GST regulations.

How do I compare a percentage discount with an absolute rupee discount?

The comparison depends on the reference price. A flat ₹500 off a ₹1,000 item is a 50% discount; the same ₹500 off a ₹10,000 item is only 5%. To compare deals fairly, convert all discounts to percentages using: Discount% = (Discount Amount ÷ Original Price) × 100. Conversely, if two items have the same percentage off but different prices, the higher-priced item saves more rupees in absolute terms. The [Profit & Loss Calculator](/profit-loss-calculator/) is useful when analysing whether a dealer's purchase discount translates into an adequate selling margin.

How are discount calculations used in Class 7–10 school mathematics in India?

CBSE and ICSE Class 7–9 syllabi cover discount as part of the 'Comparing Quantities' or 'Profit and Loss' chapters. Standard problem types include: finding the sale price given MRP and discount%, finding the discount% given MRP and sale price, and finding the MRP given sale price and discount%. These map directly to the formulas this calculator uses, making it a useful homework verification tool. The reverse formula (finding MRP from sale price and discount) is often a 3-mark or 5-mark problem in Class 8–9 exams.