One of my clients has a "short" VAT qtr. They are signed up to MTD. How do I configure/change QB's to have a period and VAT return to run from 01/02/21 to 31/03/21?

Your confusion ends here, @simonb1.

Allow me to fill you in on everything you need to know about changing the VAT Quarter end.

Once your client is set up for MTD, you don't need to change anything since HMRC sends QuickBooks obligations (Returns). That said, the dates that HMRC is expecting are automatically pushed through to QuickBooks, and so the dates may have changed because HMRC is expecting it.

However, if this is not the case, you'll want to let your client log in to their HMRC account and confirm which dates they are expecting your client to submit. Then, change the VAT Quarter end. Here's how:

1. Click Taxes from the left menu, then select VAT.
2. Choose the Edit VAT drop-down list and choose Edit settings.
3. Select Effective date for new scheme, then change the date.
4. Click Save.

You might want to read this article here to learn how to record a VAT payment in QuickBooks.

Keep in touch if you need more help with your client's VAT, or if there's anything else I can do for you. Of course, I am always here ready to help you whenever you reach out.