How do I make sure tax-exempt customers see no tax on their invoices?

Sliptree doesn't have a single "tax exempt" toggle on the customer — taxes are always controlled at the line item level via the tax rate you pick. To invoice a customer without tax, apply a 0% (or tax-exempt) rate on the relevant line items.

If the same 0% scenario keeps coming up — intra-EU reverse charge, EU exports, a domestic exemption — create a dedicated tax rate for it under Business settings → Taxes. Tax authorities often want different exemptions reported under different tax codes, so having a separate 0% reverse charge rate and a separate 0% export rate (each with its own internal ID) makes filing cleaner. See Managing tax rates.

A note on reverse charge

Sliptree does not automatically detect intra-EU reverse-charge or export situations today. You need to pick the right 0% rate yourself when invoicing a foreign customer. The rules can be subtle: an Estonian business with a Finnish VAT number selling to a Finnish customer, for example, does not apply reverse charge — the sale is treated as a domestic Finnish supply. Pick the rate that matches the supply, not just the customer's country.

For the broader picture on managing 0% rates and other built-in exemptions, see Built-in vs custom tax rates.