Hi there, @haworthelectrica,

To create CIS invoices in QBO, you must first turn on this feature to calculate your CIS deductions, track your CIS withheld or suffered amounts and create the necessary reports for HMRC.

Here's how:

1. Tap the Gear icon and select Account and Settings.
2. Click to expand the Advanced section.
3. Go to the Construction Industry Scheme (CIS), and mark the Enable CIS box.
4. Enter all the information then press Save and Done.

Next, add a contractor to start processing CIS invoices. Here's how:

1. From the Sales menu, proceed to the Customers tab.
2. Click on New customer.
3. Fill in the Customer information window and pick CIS contractor.
4. Enter their UTR number in the Tax info tab.
5. Hit Save.
6. Find the contractor in the customer list to confirm they are added successfully.
7. To process invoices, select New transaction on their profile.

For help in creating your CIS transactions and setting them up, click here.

Feel free to connect with me again if you have other questions or needing help with anything in QuickBooks. I'm always here to help when you need further assistance. Have a wonderful day!