When I post a journal entry the VAT control amount shows as zero - why would that be?

Hi@RHHR,

Thanks for visiting the Community page. Let me share a few details about VAT control. 

Creating a Journal Entry (JE) using a control account won't affect your vat report but it will affect your balance sheet. I'd suggest you run a report for VAT control to check if there are JE that generates zero. When you create a transaction, all VAT amount will allocate in the VAT Control. When you prepare your returns, the VAT Control will be moved to the VAT Suspense. Once VAT is paid, the VAT Suspense will zero out. 

For more information, you can also check our help article: Adjust your VAT liability. It helps you learn to adjust your current VAT. if you're unsure about making an adjustment, we recommend you contact your accountant.

Feel free to write again if you have more questions. We're always glad to help.  Have a nice day!