Percentage Calculator
Calculate percentages, percentage differences, and proportions instantly.
Open Calculator →ડિસ્કાઉન્ટ કેલ્ક્યુલેટર
Calculate final sale prices, stacked coupon savings, and sales tax or GST. 100% private in-browser calculation with multi-tier percentage discounts.
✓ 100% Free
👤 No Registration
⚡ Stacked Coupons
🛡️ GST / Sales Tax
Price & Discount Details
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20%
0%
0%
Quick Slabs:
Payable Price & Savings
| Original Sticker Price | ₹5,000 |
| Primary Discount | -₹1,000 |
| Extra Promo Savings | -₹0 |
| Discounted Subtotal | ₹4,000 |
| Sales Tax / GST | +₹0 |
1. Single Discount Formula
Multiply original price by discount % and divide by 100.
Savings = Price × (Disc % ÷ 100)Sale = Price - Savings
2. Stacked Coupons
Coupons stack sequentially, NOT additively.
40% OFF + 10% coupon on ₹1,000 gives ₹540 (46% effective discount, not 50%).
3. Post-Discount Tax
GST or sales tax is charged on the discounted transaction subtotal, never on the original sticker price.
Frequently Asked Questions
How is a sale discount calculated?
Multiply the original sticker price by the discount percentage and divide by 100 to determine the discount amount. Subtract that amount from the original price to find the discounted price.
How do stacked or double coupons work?
Stacked discounts are applied sequentially, not additively. For example, a 30% store discount followed by a 10% coupon on a ₹10,000 item reduces the price first to ₹7,000, and then takes 10% off ₹7,000 (₹700), giving a final price of ₹6,300 (an effective 37% discount, not 40%).
Is sales tax applied before or after the discount?
In standard retail transactions and under GST guidelines, tax is calculated on the discounted subtotal (the actual transaction value), not the original sticker price.