In the help article you highlight that the sales invoice should:-
- Show all the information required on a VAT invoice (for example, VAT Registration Number, the date of service supplied and total amount due).
- Make a note on the invoice that clearly states the domestic reverse charge applies and that the customer is required to account for the VAT due.
- Clearly state the exact amount of VAT due under the reverse charge, or the rate of VAT if the VAT amount cannot be shown, but the VAT should not be included in the amount charged to the customer.
- Invoices for services subject to the reverse charge must include the reference ‘reverse charge’ according to the VAT regulations 1995.
By selecting the correct vat code eg '20.0% RC CIS' does Quickbooks automatically populate the sales invoice with the correct information eg 'state the domestic reverse charge applies' 'clearly state the exact amount of VAT due under the reverse charge' etc etc
