Extra amounts that sit outside the guarantee — flights, insurance, production, hospitality, ground transport — go on the booking as expenses or as an additional bonus, depending on who's paying and whether it's being billed or deducted.
To bill the cost on
Open the booking and go to the Terms tab.
Add the amount under Artist Expenses.
Mark it Buyout/Billable so it's billed rather than absorbed.
Save the booking and regenerate your documents so the line appears.
To deduct the cost from the artist fee
Add it under Artist Expenses in the same place.
Enter it as a negative Buyout. The amount comes off what the artist is owed instead of being added to the invoice.
For a one-off amount to invoice the buyer
On the Terms tab, use Add Additional Bonus > Flat Amount.
Enter the amount and a clear description — this is what your buyer reads on the document.
This is the simplest route for something that isn't tied to tickets or to a recurring expense category.
Good to know
Buyouts carry no withholding tax, because they're cash paid in lieu of something provided rather than performance income. Backend and threshold bonuses do carry it. Which one you choose changes the tax treatment, so pick based on what the money actually is.
Check the totals after adding several lines. Billable expenses raise the buyer invoice; negative buyouts lower the artist payout, and it's easy to enter one when you meant the other.
If an expense is on the booking but missing from the contract or offer, the amount is fine and the template is the issue — see the article on deal terms not showing on the document.