Building an invoice by hand is where small math mistakes cost real money, especially once discounts and tax stack on top of several line items. This invoice total calculator lets you enter quantity and unit price for up to five line items, then applies an optional percentage discount and a tax rate to produce a clean subtotal, discount amount, tax amount and grand total. It follows the standard order that discounts come off the subtotal first and tax applies to the discounted amount, which is how most invoices work. Freelancers, contractors and small businesses can use it to double check a quote before sending or to sketch a total on the spot for a client. Enter your items and rates and every figure updates as you type. All calculations run locally in your browser, so your billing details never leave your device.
It sums your line items into a subtotal, applies a discount, then adds tax to produce the grand total.
The discount reduces the subtotal first, and tax is calculated on the discounted amount, matching standard invoicing.
Yes. Add each line item and the tool totals them before applying the discount and tax for the final amount.
Building an invoice by hand is where small math mistakes cost real money, especially once discounts and tax stack on top of several line items. This invoice total calculator lets you enter quantity and unit price for up to five line items, then applies an optional percentage discount and a tax rate to produce a clean subtotal, discount amount, tax amount and grand total.
Yes. Invoice Total Calculator is completely free, with no sign-up and no usage limits.
Yes. Invoice Total Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Invoice Total Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.