GST · EDUCATIONAL TOOL
GST Invoice & Tax Breakdown Calculator
Build a multi-line calculation with discounts, classifications and tax by head. Each line is rounded to paise and reconciled to the total.
Educational estimates; verify the applicable period, conditions and official sources. Server calculation: inputs are sent securely to this website for calculation. The GST module does not retain the entered tax values. Do not enter personal identifiers.
UNDERSTAND THE CALCULATION
How to use GST Invoice & Tax Breakdown Calculator
Calculate multiple lines, discounts, tax heads and cess.
Inputs and definitions
Line descriptions, supported classification/rate dates, quantity, unit price, discounts, supply route and applicable cess.
Method and formula
Calculate each line’s taxable value and applicable tax components using the shared GST rule engine, then reconcile line rounding with invoice totals.
Illustrative example
Two units at ₹500 less a ₹100 eligible discount give ₹900 taxable value. At an illustrative confirmed 18%, GST is ₹162 before any applicable cess.
COMMON QUESTIONS
Before you use the result.
Can different lines have different GST rates?
Yes. Each line needs its own supported classification, dated rate and applicable conditions. The tool totals the line tax components; one invoice does not imply one rate for every supply.
Do all discounts reduce taxable value?
No. Their treatment depends on the statutory conditions, timing and documentation. Enter only a discount that qualifies for the modeled taxable-value calculation.
Is this an e-invoice or a filed GST document?
No. It is a calculation and export aid. It does not obtain an IRN, generate a government-authorised invoice or file a return. Verify all legally required invoice particulars separately.
Read these answers with the selected period, calculation scope and official sources below.
Scope and limitations
Review the relevant period, supplied facts, official sources and any conditions beside the result.
These examples explain the method. The interactive result depends on the selected facts and period, and is not a filing or an eligibility confirmation.
GST inputs are sent for calculation and are not saved as client records by the GST module. Privacy details