Invoice calculator
Enter line amounts, discounts, tax rate, and shipping to see your invoice total instantly.
- Subtotal
- 1,000.00
- After discount
- 1,000.00
- Tax
- 80.00
- Total
- 1,080.00
How it works
Total = (Subtotal − Discount) + Tax on the discounted amount + Shipping
Enter the subtotal
Add up your line items and enter the amount before discounts and tax.
Add discount and tax
Choose a percent or fixed discount, then enter your tax rate.
Read the total
Add shipping if needed. The total updates as you type.
Frequently asked questions
Quick answers about this calculator.
Is tax calculated before or after the discount?
After. The tax rate is applied to the subtotal once the discount has been taken off, which is how most invoices work.
Is shipping taxed?
No. Shipping is added after tax in this calculator. If shipping is taxable where you are, include it in the subtotal instead.
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