GST calculator
Add GST to a taxable amount, or strip it back out of a GST-inclusive price.
Adding GST vs removing GST
Add GST takes a taxable value and puts tax on top. Use it when you price goods before tax. Take GST out works backwards from a price that already includes tax, which is what you need when a supplier quotes one MRP-style figure and you have to report the taxable value. On ₹1,000 at 18 percent, add GST gives ₹1,180. Take GST out of ₹1,180 gives ₹1,000 back, plus ₹180 tax.
Within one state the tax splits in half as CGST and SGST. Across states it is a single IGST at the full rate. The totals are identical either way. Only the reporting differs. Confirm the slab with your accountant. This page does not look up HSN codes and it is not a government service. The ledger stores prices as you enter them on a sale. Use the GST invoice generator when you need a bill with place of supply, not a quick split.
Frequently asked questions
What does Add GST do?
It takes a taxable value and puts tax on top. ₹1,000 at 18 percent becomes ₹1,180. Use it when you price goods before tax.
What does Take GST out do?
It works backwards from a price that already includes tax. ₹1,180 at 18 percent is ₹1,000 taxable and ₹180 GST. Use it when a supplier quotes one MRP-style figure.
Which GST rates can I pick?
5, 12, 18, 28 and 40 percent, plus a box if you need to type another. Confirm the slab for the goods with your accountant or the CBIC tariff. This page does not guess HSN.
When is it CGST plus SGST versus IGST?
Inside one state the tax splits in half as CGST and SGST. Across states it is IGST at the full rate. The total rupees are the same. Only the invoice lines change.
Does this tell me the HSN code?
No. Look the product up on a tariff tool, then come back and type the rate that belongs to that code.
Can I use this if I am not GST-registered?
You can do the arithmetic. You should not collect GST or print a tax invoice without a GSTIN. Leave the rate at 0 and treat it as a plain bill of supply.
Why is 18 percent the default?
It is the slab most general goods sit on. It is not a recommendation for your SKU. Check the rate before you print a bill.
Does the ledger store prices with GST inside?
The ledger stores the number you type on the sale. This calculator does not write into the khata. It is a planning box you can show a customer.
Is the split always exactly half?
On this page, yes: CGST and SGST are each half of the GST figure. A real invoice rounds per line in paise. Use the GST invoice generator when you need a document, not a quick split.
Does anything get uploaded?
No. The numbers stay in the browser.
Will this match GSTR-1?
It will match the arithmetic of a rate applied to an amount. It will not file a return, pick a place of supply, or list HSN summaries. That is invoice and return work.
Can I embed this calculator on my own site?
Yes. Use the embed widget page and paste the snippet. Keep the DueSetu link in the frame.
Is this tax advice?
No. Rates change. Confirm the slab. This is a calculator, not a government service.