There is the option to set new VAT rate as CIS Reverse Charge Type under GB VAT option. You can then use this for transactions or to map to analysis codes.
For new databases created using Dimensions 2.43c or later These VAT rates are already be set up on new databases. However, on existing databases or databases that have been upgraded, you need to set these up. On existing databases these are set up with a prefix of C. C1 is the higher rate and C2 the lower rate.
Once you've the rates you can use them for transactions, apply them to a customer or supplier as a default or set on an analysis record as a default.
To create the VAT rate:
Click System, VAT Rates, Insert.
Enter the VAT Rate detail.
Click GB VAT and select CIS Reverse Charge.
Note: The VAT Return box is already pre-set and mapped to HMRC guidelines, do not change this.
You can only use the new VAT rates for customers or suppliers flagged as CIS.