IGI Calculator
Enter an amount, choose the rate and view the breakdown. The calculator works in either direction: from the taxable amount or from the final total.
It works in your browser. We don't save anything and you don't need to register.
How it works
It applies the selected rate to the amount entered and rounds to the nearest cent. If the amount already includes IGI, it calculates the taxable amount by dividing by the corresponding factor instead of subtracting the percentage—the most common calculation error.
When it helps
- To check an amount before sending an invoice, especially when the customer gave you a tax-inclusive price and you need to extract the taxable amount.
- To review a supplier invoice that does not quite reconcile. If the IGI amount does not match the taxable amount and rate, the cause is often rounding the total instead of each line.
- To prepare a quick quote over the phone without opening your accounting software or risking a figure that does not add up later.
When it's not enough
- If you issue more than a couple of invoices a month, calculating them separately stops making sense: the amount must be calculated where it is recorded, or you will end up with two versions of the truth.
- The calculator does not update any register. You still have to add the quarter’s invoices by hand, which is precisely what the full product avoids.
What it does not do
It does not decide which rate applies to your transaction. That is determined by law and depends on what you sell and to whom. It also does not account for exemptions, pro rata deduction rules or reverse charge. For a specific case, check the official source or ask your accounting firm.
What if you never had to do it by hand again?
In AndCompta, every invoice line carries its own rate and the quarterly IGI register is updated automatically.