I found that when CIS subcontractor is VAT registered at 20% CIS deduction, QB posts wrong amounts to CIS return

I appreciate you providing further information below about your concern, Justyna2.

The inaccuracies in your CIS return may stem from selecting the wrong option in the Default Tax Rate selection field. Using the correct tax rate is crucial for ensuring the accuracy of financial reports. If tax calculations are incorrect, it can lead to misleading financial statements, which can impact business decisions and erode stakeholder trust.

To avoid this issue of manually correcting all entries in the future. Let's confirm that the Default Tax Rate selection is configured correctly in your account; here's how:

1. Click the Gear icon in the top right corner and choose Account and Settings.
2. Go to the Advanced tab and find the Accounting section.
3. Choose the appropriate tax rate in the Default tax rate selection area.
4. After you are finished, click Done.
   
   
   

After you submit your CIS return, be sure to record the payment to HMRC. Keep your CIS reports and bank feed accurate.

You can also remove an incorrect VAT due adjustment. After deleting the adjustment, you will no longer see it when you review your VAT return on the tax screen.

Our Community Forum is always available for any further questions or concerns, and we are happy to assist you.