Discount calculator — price after percent off, GST-aware
Enter a price and a discount and see what you save and pay, with optional GST added on the discounted price. It calculates in your browser (0 uploads, works offline).
How to use it
- Enter your values in the fields above.
- The result and a short explanation appear instantly.
- Copy or Download the result.
FAQ
How do I calculate a discounted price for free?
Enter the price and the discount percentage — the amount saved and the final price appear instantly in your browser with no upload. Add a GST rate and it is applied to the discounted price, the way Indian invoices work.
Is GST charged before or after the discount?
On the discounted price. This tool subtracts the discount first, then applies GST to what remains — the standard order on a GST invoice.
Is my data uploaded?
No. The calculation is local and nothing is stored; it works offline.
Can I use it for a sale price without GST?
Yes — leave GST as "No GST" and it just shows the saving and the reduced price.
Limits
Applies one flat discount and one GST rate. Compound or tiered discounts are out of scope. Not tax advice.
Related
The GST calculator handles tax on its own; the percentage calculator does general percentages.
Bookmark this page (Ctrl+D, or ⌘D on Mac) or install the app — it works offline the next time you need it.