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GST Calculator 2026 | Add or Remove GST | CGST SGST IGST | MyeCA.in

Calculate GST on invoices. Add or remove GST and split tax into CGST, SGST or IGST with current and legacy rate chips.

GST calculator inputs and output

GST calculator helps business owners estimate inclusive and exclusive GST values. Use inputs from invoice value, GST rate, place of supply, and HSN/SAC classification; the output is a reproducible GST estimate tied to the selected period, rates, and assumptions.

  • Enter dated GST inputs instead of remembered amounts
  • Save the GST calculator output period, rates, and assumptions

Invoice limits and verification

The output is a planning estimate for business owners, with limits created by rate changes, classification questions, omitted fees, and incomplete records. Verify the result against invoice value, GST rate, place of supply, and HSN/SAC classification before filing, borrowing, investing, or making a payment decision.

  • Verify the GST output with the underlying records
  • Recalculate GST after a material input or rule change

CGST next workflow

After reviewing the saved input and output, business owners should carry the estimate into the relevant invoice workflow, retain the source records, and resolve any CGST limitation before acting.

  • Retain the input file and dated GST output
  • Business owners should use the related workflow after reviewing the estimate to estimate inclusive and exclusive GST values

Frequently asked questions

What can the GST calculator estimate?

It estimates tax-inclusive or tax-exclusive GST values and splits CGST, SGST, or IGST based on the selected rate and transaction type.

Does the GST calculator replace GST return filing?

No. It is a calculation aid. GSTR data, invoices, place of supply, ITC, and return rules still need proper review.

Which GST rates can I use?

Use the rate applicable to the goods or services after checking HSN/SAC classification and current GST notifications.