Free GST Return Calculator India | GSTR-3B Liability Tool

Outward taxable supplies

Intra-state taxable value

Inter-state taxable value

Average GST rate Use the rate that best represents your taxable sales for the period. If sales are split across 5%, 12%, 18%, and 28%, use a weighted average or calculate each category separately.

Nil/exempt supplies Enter supplies that are reported in the return but do not create GST liability, such as nil-rated or exempt outward supplies.

Reverse charge and additions

RCM taxable value RCM means reverse charge mechanism. Enter purchases or services where you must pay GST directly instead of the supplier charging it.

RCM GST rate

Interest

Late fee / other

Eligible input tax credit

IGST ITC ITC is input tax credit. Enter eligible IGST credit available from your purchases, imports, or earlier periods.

CGST ITC Enter eligible CGST credit available for adjustment against your central tax liability.

SGST ITC Enter eligible SGST credit available for adjustment against your state tax liability.

How this estimate works

Intra-state

Tax is split equally into CGST and SGST.

Inter-state

Tax is treated as IGST.

ITC adjustment

This tool subtracts matching ITC from each tax head for a quick estimate.

Estimated GSTR-3B liability

Use this as a planning estimate before filing. Check your books and portal data before final submission.

Taxable turnover

Exempt / nil supplies

Output IGST

Output CGST

Output SGST

RCM tax payable

Total ITC

Net IGST payable

Net CGST payable

Net SGST payable

Interest + late fee

Estimated cash payable This is the approximate amount payable in cash after available ITC is reduced from calculated output tax, plus RCM, interest, or late fee.