Hi. I have raised an invoice for £9289.80 + VAT. I now need to raise a credit note against this invoice for £8000, when I do so, it doesn't consider the CIS deduction?

Hello there, goldlineflooring.

I'd like to share some information on how Construction Industry Scheme (CIS) deduction works in QuickBooks Online.

The Construction Industry Scheme (CIS) deduction suffered created will not show  from the Credit note. With this, our QuickBooks Care Support are able to help you check on the transaction and create necessary adjustments to report CIS.

To get our contact number, here's how:

1. Click the Help icon in the upper right of the screen.
2. Select Contact US on the pop-up. 
3. Enter what you're needing assistance with in the What can we help with? field and choose Let's talk. 
4. Click Get a callback.
5. Enter your contact information.
6. Select Call me.​

This article outlines the detailed steps on how to enter and apply a credit note or delayed credit in QuickBooks Online.

Be sure to keep in touch with me and let me know if you have other concerns. I want to ensure this gets resolved.