Hi Lesley,

Thanks for using Community Hub.

The default tax code in Sage 50 Accounts is used for new transactions entered in the software and wouldn't affect an import.

If you're importing transactions that have been included in a VAT Return outside of Sage 50 Accounts, then after importing I would suggest running a VAT Return in  for that period so that the transactions are marked as reconciled. You wouldn't submit this return to HMRC as you've already submitted that period but the VAT Return process in 50 Accounts will ensure the transactions aren't picked up again.

For VAT Returns, this area of the Help Centre has some useful guides: Help Centre >

Regards,

Andy
Sage UKI

You can mark the return as "submitted"

You could also use T9 and then the transactions will never be picked up by VAT return

My only concern with T9 would be that a VAT Audit may ask why the non-vatable tax code was used? Agree though, you can mark the Return as submitted.