Hi Ashleigh, thanks for joining the Community
As of the discontinuation of QuickBooks Desktop for UK users in June 2023, we're no longer able to provide support for this product. To search for existing support articles, please see here.
If you're using QuickBooks Online, you can record the deposit as a payment on the Suppliers account.
To do this, go to the Suppliers page and select New transaction > Expense. Enter the details of the Deposit on the Expense form and set the Category on the Category Details line to Creditors (or Accounts payable). After saving, this will create a credit on the Suppliers account.
Once you receive the invoice, raise a Bill on the Suppliers page. When you Make payment on the bill, tick the Expense showing under Credits to apply the deposit to the total bill payment.
If you need any further guidance on this, please get back to us below.