My client has changed his vat periods and I now have a two month VAT return to submit. How do I change the dates when VAT Settings only offer monthly or quarterly. ?

I'm here to help prepare and submit your return, @Sue Downing.

You can change the end date of your VAT return when preparing it before submission. Let me show you how.

1. Go to Taxes.
2. Select VAT.
3. Under Open returns, select the return you wanted to submit.
4. Below the ACTION column, select Prepare return.
5. Enter your desired end date.
6. Click Submit.

Learn more about what you need to prepare before you submit your return with this article: Submit a VAT return in QuickBooks Online.

I've also included this reference with the steps you can use in recording a payment or refund for your return: Vat Payment or Refund.

If you've got other concerns aside from your submitting your return, please let me know in the comments below. Stay safe!