ToolXuite
Finance Tools
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Invoice Calculator

Finance Tools

Build an invoice with line items, apply a discount and tax rate, and download the full calculation as a CSV. Perfect for freelancers and small businesses.

Line Items

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Adjustments

Subtotal$0.00
Total$0.00

How to Use the Invoice Calculator

  1. Add line items — each with a description, quantity, and unit price.
  2. Optionally apply a discount (percentage or fixed amount).
  3. Enter a tax rate if applicable.
  4. The subtotal, discount, tax, and total update instantly.
  5. Click Download CSV to save the invoice calculation.

Frequently Asked Questions

Is this a full invoicing tool?

This is a calculator, not a full invoicing application. It helps you calculate totals quickly. For sending formal invoices, use dedicated invoicing software like Wave, FreshBooks, or Invoice Ninja.

Is the discount applied before or after tax?

Discount is applied to the subtotal first. Tax is then calculated on the discounted subtotal. So: Total = (Subtotal − Discount) × (1 + Tax Rate).

Can I save my invoice?

Click Download CSV to save all line items plus the totals. The CSV can be opened in Excel or Google Sheets.

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