Business
Tax On Invoice Calculator
Add tax at a user-entered rate to an invoice subtotal and show the total payable.
The result shows the tax separately and the invoice total, so the customer pays the subtotal plus the tax shown.
Formula
Tax amount = subtotal multiplied by tax rate divided by 100. Invoice total = subtotal plus tax amount.
How it works
Enter the subtotal before tax and the tax rate that applies in your area. The calculator separates the tax so invoices show it clearly. Always confirm the correct rate and whether your goods or services are taxable before sending an invoice.
Worked example
For example, a $1000 subtotal at a 17% tax rate gives $170 of tax, so the invoice total is $1170.
FAQs
Which tax rate should I enter?
The rate that legally applies to your sale in your location. Rates differ by place and by product or service.
Is this tax advice?
No, this is arithmetic only. Check local tax rules or an accountant for what rate applies to you.
What about discounts?
Apply discounts to the subtotal first, then calculate tax on the discounted amount, unless local rules say otherwise.
Estimates only, not financial advice. Check your figures before making a business decision.
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