How to solve – “Customer VAT does not match company VAT”
The VAT setup used by the default customer does not match the company’s VAT configuration.
- Open the default customer in Business Central and check its VAT Bus. Posting Group.
- Open VAT Posting Setup.
- Find the combination of the customer’s VAT Bus. Posting Group and the relevant VAT Prod. Posting Group.
- Confirm that the VAT percentage is correct.
- In the Admin Center, open Integration → VAT groups and verify that the rate matches Business Central.
Indepth guide link: "Set up VAT on accounts in Business Central without double posting"