Two different things can help here: saving reusable tax rates, which you can do yourself, and switching on an organisation-wide default so every new booking carries a set percentage automatically, which our team turns on for you.
Save reusable tax rates yourself
Go to Settings → Invoices, Offer and Payments.
Open Tax Rates.
Add each rate you use regularly, with a clear name so you can recognise it later.
Save.
From then on, those rates appear as options in the Tax bracket on the Artist Fee and Booking Fee lines under Terms → Offer, so you pick rather than type.
Turn on an organisation-wide default
An account-level default, where every new booking is created with a set tax percentage already applied, needs our team — start a chat from the messenger and we'll sort it out. It helps if you can tell us the percentage and whether it should apply to the artist fee line, the booking fee line, or both.
Good to know
A default applies to new bookings only. Historical bookings can't be mass-updated to a new rate, so anything already in your account keeps whatever it was created with.
A default is a starting point, not a lock — you can still change the Tax bracket on any individual booking under Terms → Offer, as long as no invoice has been created against it yet.
Withholding is configured separately, per booking, in the Withholdings Group at the bottom of Terms → Offer. There's no account-level withholding default.
Which rate you should be defaulting to is a question for your accountant. We can set up whatever they tell you to use.