Will Qb desktop version will be compliant with MTD? If SO how to file Vat return using QB desktop to be MTD compliant? OR Will all desktop users have to switch to QbO?

Hi gds1 welcome to Community.

The only desktop product that is MTD compliant is the 2019 version. If you have an older version you can upgrade to the 2019 version, we have enclosed a link to enable you to upgrade if you wish.

https://community.intuit.com/articles/1501893-download-quickbooks-desktop