How do I calculate an invoice total?

Multiply each line item's quantity by its rate, add the line items for a subtotal, subtract any discount, and apply tax to the taxable amount.

Does the calculator save my invoice?

No. The calculator runs in your browser and does not create or save an invoice record.

Can I use a different currency?

Yes. Choose a supported currency to display the result. Confirm the currency and tax treatment in your client agreement before sending an invoice.

Free calculator

Invoice Total Calculator

Add your line items, discount, and tax to calculate a clear invoice total before you send it.

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Invoice details

Enter numbers only; descriptions are optional.

Currency Discount (%) Tax (%)

Line items

Description Qty Rate

This is a planning calculator, not a tax filing tool. Confirm taxes and discounts for your situation before invoicing.

How the invoice total calculator works

Each line total is quantity multiplied by rate. The calculator adds the line totals for a subtotal, subtracts the percentage discount, and applies the tax percentage to the remaining taxable amount.

Use the result to check your invoice before sending it. The final invoice should still show the line items, currency, tax details, payment terms, and due date your client expects.

Need saved clients and repeat billing?

This calculator is useful for a quick check. For saved client profiles, reusable items, PDF sharing, and recurring invoices, learn how InvoiceCub works on iPhone and iPad.