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GST calculator for Indian small businesses

Enter an amount, choose a slab and whether the figure is tax-inclusive. The tool shows CGST + SGST or IGST. It does not decide your legal rate, place of supply, or return.

GST Utility

Indian GST Calculator (CGST + SGST)

Compute GST amounts with instant split between Central GST (CGST) and State GST (SGST) for inclusive or exclusive goods.

Tax Breakdown

Net / Base Amount:₹ 1000.00
CGST (9%):₹ 90.00
SGST (9%):₹ 90.00
Total GST (18%):₹ 180.00
Final Total Invoice Value:₹ 1180.00
Check the split on a number you enter

Want this arithmetic inside daily bills?

This calculator does not file GST returns or guarantee a legal tax invoice. Request beta access to discuss billing workflows available today.

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CGST, SGST and IGST

For a supply inside one state, the rate you select is typically split equally into Central GST and State GST. For a supply that crosses a state border, the same rate is often treated as Integrated GST. Confirm current rules for your transaction before issuing a tax invoice.

For billing workflows in the product, see billing and how to create invoices.

Common Questions

GST calculator questions

Does this calculator file my GST return?
No. It only splits a number you enter into tax and taxable value using the rate and supply type you choose. It does not determine the legally applicable rate or file GSTR-1.
Can I use this instead of GST billing software?
Use it to check arithmetic. Recording invoices, HSN and returns is a separate product conversation in the Udhyami beta. This page does not promise automatic GST-compliant invoicing.
Is Udhyami the same as Udyam MSME registration?
No. Udhyami (with an h) is a ManTech Studio business-management product for everyday sales, purchases, stock and money records. It is not the Government of India Udyam registration portal and does not issue Udyam certificates.
Can I start using Udhyami today without talking to the team?
Udhyami is in a closed beta. Request access from the contact page. The team confirms which workflows are available for your business before onboarding. Requesting access is not a paid subscription.
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Discuss your sales, stock and customer-dues workflow with the Udhyami team and request beta access.

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