GST Calculator India (CGST + SGST)

About the GST Calculator India (CGST + SGST)

GST Calculator India handles both sides of Goods & Services Tax — add GST to a base price, or reverse-calculate the base from a tax-inclusive total. Splits correctly into CGST + SGST for intra-state or IGST for inter-state.

How to use

1. Enter the amount in rupees.
2. Pick the GST rate (0, 0.25, 3, 5, 12, 18 or 28%).
3. Choose mode (add / remove) and supply type (intra / inter), then click Calculate.

Benefits & key features

• All current Indian GST slabs covered.
• Both add and reverse modes in one tool.
• Correct CGST / SGST / IGST allocation per supply type.
• Useful for invoices, billing and bookkeeping.

Pro tip

Reverse GST is handy when an MRP already includes tax — toggle to Remove GST to see how much of the sticker is tax.

Why choose toolsfy for Finance tools?

Finance calculators on banking websites are designed to sell products. toolsfy's are designed to answer a question. Every formula is written out on the landing page so you can audit it against your bank's own fine print, and every calculation respects Indian conventions — rupees, lakhs, financial-year slabs, GST tiers — without forcing you into an anglicised spreadsheet.

Common use cases

• Home-loan applicants comparing EMI under different tenure options before their bank appointment on Monday.
• Small-business owners estimating break-even units before launching a new product line, with fixed costs and contribution margin shown transparently.
• Salaried professionals choosing between the new and old income-tax regime, slab-by-slab, before the next TDS declaration deadline.

Frequently asked questions