CIS is only deducted on the labour proportion of the of the transaction. You can of cousre add VAT to the materials line if it is applicable

Resolution for 'CIS bill issue: 'How do I enter an amount for materials when entering a subcontractor CIS bill?' available: Yes.

The CIS bill issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the CIS bill issue yourself by looking for a resolution described in the article. If it is a complex CIS bill issue or you are unable to solve the issue, you may contact us by clicking here or by using other CIS bill support options.

For more information about resolving issues related to CIS bill in Quickbooks/QBO or to get support for the issue 'How do I enter an amount for materials when entering a subcontractor CIS bill?', click the link below: