New
VAT Calculator BD
Add or extract 15% NBR VAT. All Bangladesh VAT rates supported.
🏷️ Sale · markdown · original price
Discount Calculator
Three modes: find the sale price from a discount%, find what percentage you're saving, or reverse-engineer the original price from a sale price — with saving ratio and VAT guidance.
Step By Step
How to Use This Calculator
5 steps
- Choose a mode from the three tabs: 'Price after discount' to find the sale price, 'What discount am I getting?' to find the percentage, or 'Find original price' to reverse-engineer the pre-discount price.
- Enter the two values shown for that mode — both fields must be filled to see a result.
- Read the primary result card (Original · You Save · Sale Price) and the two detail tiles: Saving ratio and 'You pay' percentage.
- Note the VAT reminder below — if your price is VAT-exclusive, add VAT to the sale price after discounting.
- For stacked discounts, run Mode 1 twice: use the first sale price as the original input for the second discount.
Worked Example
Example: reverse-check a 'was' price
Use this sample to sanity-check your inputs and understand what the final result represents.
- 1Mode: Find original price
- 2Sale price: 1,500 ৳
- 3Discount: 25%
Final Result
Original must have been ৳2,000 · You save ৳500 · You pay 75% of the original
Methodology
Discount formulas & references
This section explains the calculation logic, assumptions, and source material used to make the result more trustworthy and easier to verify.
Mode 1 — Sale price: Discount = Original × (Rate ÷ 100); Sale = Original − Discount. Mode 2 — Discount%: Rate = ((Original − Sale) ÷ Original) × 100. Mode 3 — Original: Original = Sale ÷ (1 − Rate ÷ 100). Stacked discounts: Final = Original × (1 − D1÷100) × (1 − D2÷100) — not additive. References: NBR VAT Act 1991 (Bangladesh); ISO 15022 trade discount conventions; standard retail accounting (ACCA F3).
Helpful tips
- 1Two sequential discounts don't add up: 20% then 10% = 28% total, not 30%. Run Mode 1 twice to calculate stacked discounts correctly.
- 2Use Mode 3 ('Find original price') to verify if a sale tag is genuine — enter the sale price and the advertised % to see what the original should have been.
- 3VAT is applied after the discount in Bangladesh — always discount first, then add VAT on the net sale price.
- 4The 'You pay' tile shows what fraction of the original price you actually pay — useful for quick mental comparisons between offers.
Frequently Asked Questions
What are the three calculation modes?+
Mode 1 — 'Price after discount': you know the original price and the discount percentage, and want the sale price and amount saved. Mode 2 — 'What discount am I getting?': you know both prices and want to find the percentage. Mode 3 — 'Find original price': you know the sale price and the discount rate, and want to reverse-engineer the original price (useful for checking if a 'was' price is genuine).
What are the formulas used?+
Mode 1: Discount amount = Original × (Rate ÷ 100); Sale price = Original − Discount amount. Mode 2: Discount% = ((Original − Sale) ÷ Original) × 100. Mode 3: Original = Sale ÷ (1 − Rate ÷ 100). All three are standard retail arithmetic — the same formulas used in accounting and commerce courses.
Why can't I enter a discount percentage above 100%?+
A discount above 100% would result in a negative sale price, which has no meaning in retail pricing. If a business says '110% off', that is a marketing claim, not a standard discount — it typically means they are paying you to take the item. This calculator blocks inputs above 100% to prevent nonsensical results.
Do stacked or sequential discounts add up?+
No — two sequential discounts do not add up to a simple sum. A 20% discount followed by another 10% discount gives a combined discount of 28%, not 30%. The formula is: Final price = Original × (1 − D1 ÷ 100) × (1 − D2 ÷ 100). Apply this calculator twice in sequence, using the Mode 1 sale price as the new original for the second discount.
Should I apply VAT before or after the discount?+
In Bangladesh and most VAT systems, VAT is calculated on the taxable value after any trade discount. So: first apply the discount to get the net price, then add VAT on top of that. The VAT reminder below the result card reflects this. If the displayed price is already VAT-inclusive, the discount applies to the full VAT-inclusive price — check the receipt or store policy.
How do I check if a sale price is genuine?+
Use Mode 3 ('Find original price'): enter the sale price and the advertised discount percentage. The calculator will show you what the original price must have been for that discount to be accurate. Compare that against the product's regular market price to judge whether the 'was' price is real.