GST Input Credit Calculator
Output tax less input credits, net of blocked purchases.
Rates change with budgets and local ballot measures, and the rate that applies depends on the delivery address and product category. Treat these as planning figures, not as a filing.
GST payable
$16,560
$32,400 out, $15,840 in
You remit the difference, not the full $32,400 collected. Credits require a valid tax invoice from a registered supplier — unregistered suppliers cost you the credit, which makes them more expensive than their headline price.
How the GST Input Credit Calculator works
You do not remit the GST you collect — you remit what you collect less what you paid on your own purchases. That makes registered suppliers structurally cheaper than unregistered ones for the same headline price, because only the registered one gives you a claimable credit.
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price — check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
What is an input tax credit?
The GST you paid on business purchases, deducted from the GST you collected on sales. You remit only the difference, which is what makes GST a tax on value added rather than on turnover.
What purchases are blocked?
Categories vary by country but commonly include personal use, entertainment, some motor vehicles, and anything used to make exempt supplies. Blocked purchases cost you the full GST with no recovery.
Why does supplier registration matter?
Because a credit needs a valid tax invoice from a registered supplier. An unregistered supplier quoting the same price is effectively more expensive by the GST amount, since you cannot reclaim any of it.
What if credits exceed output tax?
You are in a refund position, which is normal when stocking up or investing in equipment. Refund claims attract more scrutiny than payments, so keep the invoices in order.