How do successive (stacked) discounts work (e.g. 50% + 20% OFF)?

Successive discounts apply sequentially to the remaining balance, NOT by adding the percentages together. For example, a ₹1,000 item with 50% OFF drops to ₹500. The extra 20% coupon then applies to ₹500 (saving another ₹100), making the final price ₹400. The total savings is ₹600, which represents an effective 60% discount—NOT 70%.

What is the effective discount of a Buy 1 Get 1 Free (BOGO) deal?

In a Buy 1 Get 1 Free promotion, you receive 2 items for the price of 1, resulting in an exact 50% discount on both items. For a Buy 2 Get 1 Free deal, you receive 3 items for the price of 2, which equals an effective discount of 33.33% across all items.

How do I calculate the original price if I only know the sale price and discount percentage?

To find the original price before discount, divide the sale price by (1 minus the discount rate). Formula: Original Price = Sale Price ÷ (1 − Discount% / 100). For example, if an item is ₹800 after a 20% discount, the original price is ₹800 ÷ 0.80 = ₹1,000.

Is GST charged before or after applying promotional discounts in India?

Under Indian GST law, trade discounts and promotional discounts shown on the face of the tax invoice are deducted BEFORE calculating GST. GST is charged on the net discounted taxable value. For example, if a ₹1,000 item is discounted by 20% to ₹800, an 18% GST rate is calculated on ₹800 (₹144 GST), making the final invoice total ₹944.

Why do ecommerce brands prefer successive discounts over a single large discount?

Successive discounts leverage consumer cognitive bias. Shoppers perceive '50% OFF + Extra 20% OFF' as comparable to 70% OFF, creating massive psychological urgency. However, for the merchant, a 50% + 20% successive discount only sacrifices 60% margin, preserving valuable revenue while driving higher checkout conversion.

Discount Calculator (Sale Price & Savings)

Standard Promotional Markdown

Calculate Sale Price & Savings

Original Retail Price (MRP)INR (₹)

₹

Quick Add:

Quantity (Units)Items

Discount Applied

Popular:

Add GST on Discounted Price (Optional)Indian GST

Final Sale Price (Customer Pays)

₹1,499.25

Total Customer Savings

₹499.75

You save 25% OFF

Breakdown: ₹1,999 (Original) − 25% Discount (₹499.75) = ₹1,499.25

Popular Promotional Campaign Blueprints

Battle-tested discount formulas used by high-converting ecommerce brands in India

Standard30% OFF

Seasonal Flash Sale (30% OFF)

Standard seasonal promotion on catalog items

Base: ₹1999

Festive50% OFF

Festive Flat 50% OFF

High-converting festive clearance markdown

Base: ₹3499

Successive40% + 20% Stack

Double Stack (40% OFF + Extra 20% Coupon)

Primary site discount stacked with checkout coupon code

Base: ₹4000

Successive50% + 15% + 5% Stack

Triple Stack (50% + 15% Member + 5% Prepaid)

Site sale + Loyalty tier discount + Bank / UPI payment discount

Base: ₹5000

BOGOBuy 1 Get 1

Buy 1 Get 1 Free (BOGO)

Classic Buy One Get One Free promotion (Effective 50% discount)

Base: ₹1299

BOGOBuy 2 Get 1

Buy 2 Get 1 Free

Volume-driving bundle deal (Effective 33.33% discount)

Base: ₹999

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BOGO & Tiered Upsells

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Explore Promotional Features

Ecommerce Pricing Guide: Promotional Psychology & Margin Protection

Strategic principles for designing profitable discounts, coupons, and BOGO campaigns

1. The "Rule of 100" in Promotional Psychology

Renowned marketing researcher Jonah Berger identified that consumer perception of discounts depends heavily on whether a product is priced above or below 100:

For Items Below ₹1,000: Use % OFFA 25% discount on a ₹400 t-shirt sounds like a significant markdown, whereas "₹100 OFF" feels small. Use percentage discounts on low-to-mid ticket items.

For Items Above ₹1,000: Use Flat ₹ OFFOn a ₹5,000 leather bag, "Flat ₹1,000 OFF" feels much more substantial and tangible to shoppers than saying "20% OFF", driving higher checkout completion.

2. The Mathematics of Successive (Stacked) Discounts

When a merchant advertises "50% OFF + Extra 20% OFF at Checkout", it does NOT add up to 70% OFF. Here is how the math actually works:

Effective Multiplier = (1 − 0.50) × (1 − 0.20) = 0.50 × 0.80 = 0.40 (60% Total Discount)

The first 50% discount cuts a ₹1,000 product to ₹500. The second 20% discount applies only to the remaining ₹500, deducting ₹100 to reach ₹400. For the merchant, you retain 40% of the retail price rather than 30%—saving 10% of gross revenue while giving customers the psychological thrill of stacking two discounts!

3. BOGO vs. Cash Discounts: Driving Velocity Without Devaluing Your Brand

Straight cash markdowns can cheapen a brand's perception and create customer hesitation when prices return to full retail. In contrast, Buy 1 Get 1 Free (BOGO) or Buy 2 Get 1 Free:

Doubles Inventory Velocity: Clears seasonal or excess stock twice as fast while keeping perceived item value intact.
Increases Units Per Transaction (UPT): Customers leave with multiple items, increasing product familiarity and repeat re-order rates.
Controls Margin Bleed:A "Buy 2 Get 1 Free" deal requires the customer to spend twice the base order value before earning a 33.3% effective discount.

Frequently Asked Questions

Clear answers regarding discount calculations, successive coupons, and BOGO deals

To calculate a discount percentage: 1) Multiply the original price by the discount percentage and divide by 100 to get the savings amount. 2) Subtract the savings from the original price to find the final sale price. For example, a ₹2,000 shirt at 30% OFF has a ₹600 discount (₹2,000 × 0.30), resulting in a final sale price of ₹1,400.