GST Input Tax Credit Calculator
Work out gst input tax credit instantly with clear inputs, formula shown and shareable results.
About GST Input Tax Credit Calculator
Input tax credit lets a business offset tax paid on purchases against tax collected on sales, so only value added is taxed in cash. Blocked credits — typically motor vehicles, personal consumption and exempt supplies — must be removed first.
Formula
Net tax
Eligible credit = input tax - blocked + opening credit; cash payable = output tax - eligible credit
Worked example
With the default values below, GST Input Tax Credit Calculator returns Net Tax Payable In Cash of $145,000.00. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Tax On Salesminimum 0
- 450,000
- Tax Paid On Purchasesminimum 0
- 320,000
- Ineligible Or Blocked Creditminimum 0
- 40,000
- Credit Carried Forwardminimum 0
- 25,000
Results
- Net Tax Payable In Cash
- $145,000.00
- Eligible Input Credit
- $305,000.00
- Credit Carried To The Next Period
- $0.00
- Credit Blocked Or Ineligible
- $40,000.00
Step by step
- 1Values used
- 2Net tax
- 3Net Tax Payable In Cash= 145,000.00
- 4Eligible Input Credit= 305,000.00
- 5Credit Carried To The Next Period= 0.00
- 6Credit Blocked Or Ineligible= 40,000.00
Assumptions and limits
- The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
- Tax figures are estimates based on the rates, caps and thresholds you enter. Real rules differ by jurisdiction and change every year, and personal circumstances alter the outcome. This is not tax or financial advice — confirm with a qualified adviser.
- This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Tax figures are estimates based on the rates, caps and thresholds you enter. Real rules differ by jurisdiction and change every year, and personal circumstances alter the outcome. This is not tax or financial advice — confirm with a qualified adviser.
Frequently Asked Questions
Why is credit blocked on some purchases?
Because the input is not used for taxable business supply, so allowing credit would subsidise consumption.
What if credit exceeds output tax?
The excess is carried forward, and in export or inverted-duty cases it may be refundable.