Allow me to share some information about how to record the deduction of the CIS on the invoice, RPElec.
At this time, recording the CIS feature is only offered in QuickBooks Online (QBO). This is why you're unable to find the option anywhere in your QuickBooks Self-Employed (QBSE) account.
QBSE uses a single-entry accounting and is designed to track business income and expenses. The program will help estimate taxes for you so you can file the Self-assessment form easily. That’s why you're unable to track the CIS in the program.
Regarding recording it in your account, I suggest consulting with an accountant for further assistance. They can guide you on how to handle the transaction in QBSE, especially the category type.
Otherwise, you can subscribe to QBO, which will auto-calculate and e-file CIS invoices on the go. Go to this link to view the complete details about the features and prices for each version: QBO Plans & Pricing.
Additionally, here are some articles below that provide information on how QBO handles CIS and processes the tax return:
If you still need assistance in recording the CIS deduction, click the Reply button below and add a comment. I'm always here to help. Have a great day!