How do I add tax to an invoice?

Open the invoice from the Invoices section while it's still a draft, or as you're creating one, and set the tax rate on each line item — that's where the per-line rate lives, right next to the item it applies to.

Nassima calculates the tax for each line and rolls it into the invoice total automatically.

To exempt a line from tax, choose the exempt (0%) rate from that same per-line list instead of a regular percentage — the line then carries no tax and the invoice total reflects it. Note the reason for the exemption and attach any supporting documents, such as an exemption certificate, so there's a record on file if it's ever questioned.

The rate itself, VAT, GST, sales tax, or another type, comes from what you've configured for your account. Which regimes and rates are available, and how you set them up, is covered under Tax management, so invoices don't duplicate that configuration — they just draw on it.

Country-level tax filing and compliance work, such as Zakat filings or excise reporting, is handled separately from invoice line tax, through dedicated compliance tools outside the invoice itself.

You set the rate once on the line, and the total updates automatically from there.