Taiwan VAT Calculator
Convert between amounts before and after Taiwan’s 5% business tax (VAT), rounded to whole NT$ the way uniform invoices are.
The standard business tax rate is 5%.
Results
Enter an amount to see the amount before tax, the tax and the total.
How to use
- Choose whether you know the amount before tax or the total including tax, then enter it.
- The rate defaults to Taiwan’s 5% business tax. Change it if you need another rate; the tool remembers it.
- The results list the amount before tax, the tax and the total, and show where rounding happened. Click “Copy” on any row to grab a number.
FAQ
How do I add 5% tax to a price?
Tax = amount × 5%, rounded half up to whole NT$, and total = amount + tax. For 999 the tax is 49.95, rounded to 50, for a total of 1,049.
How do I take the tax out of a total?
Amount before tax = total ÷ 1.05, rounded to whole NT$, and the tax is the remainder (total − amount), so the two always add up. For a 1,000 total: 1,000 ÷ 1.05 = 952.38…, so 952 before tax and 48 tax.
Why isn’t the tax on a 1,000 total just 1,000 × 5% = 50?
The 5% applies to the amount before tax. A tax-included total already contains the tax, which is only 5/105 of it (about 4.76%); multiplying the total by 5% overstates the tax.
How is tax rounded on Taiwan uniform invoices?
On a triplicate uniform invoice, the tax is calculated on the invoice’s total sales amount and rounded to whole NT$, not per line item. With several items, add them up first and then calculate the tax.
Can I use other tax rates?
Yes. Change “Tax rate”, for example to work out VAT in another country. Turn off whole-NT$ rounding to keep 2 decimals.
Is my data uploaded?
No. Everything is calculated in your browser, with no network connection needed.
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