Configure GST
If you're a registered business, Settings → Tax takes about two minutes to set up correctly.
- 1
Open Settings → Tax
Found under Manage → Settings in your dashboard sidebar.
- 2
Enter your GST rate
Enter your applicable rate as a percentage, e.g. 17.
- 3
Enter your registration number
This prints on every customer invoice alongside the tax breakdown.
- 4
Choose inclusive or exclusive pricing
Decide whether your listed product prices already include GST, or whether GST should be added on top at checkout — this changes how the tax line is calculated, not whether it's shown.
- 5
Save
Every order placed from now on carries your rate, the calculated amount, and your registration number automatically.
Confirm your rate with an accountant
Forma applies exactly what you enter here — it doesn't validate your registration or determine the correct rate for your type of business. See Tax & GST for the full reference.