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Invoice Calculator

Free invoice calculator: quantity × price, tax, discount, shipping, fees, deposit and balance due. No signup.

How the invoice calculator works

Enter quantity, unit price, tax, discount, shipping, fees and any deposit to see your subtotal, grand total and balance due instantly.

Formula

Subtotal = quantity × price. Discounted subtotal = subtotal − discount. Total = discounted subtotal + tax + shipping + fees. Balance due = total − deposit.

Worked example

Example: 10 hours at 80 = 800; a 10% discount gives 720; 20% tax adds 144, so the total is 864. With a 200 deposit the balance due is 664.

FAQ

Is tax calculated before or after the discount?

Normally tax applies to the discounted amount, which is how this calculator works. Always check the rules where you operate.

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For information only – not financial, tax or legal advice. See our disclaimer.

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