How can I customise the period dates in MTD VAT return? I wish to include purchases before my first VAT quarter but the dates can't be changed in the return. Thanks.

Hello simon13,

Customizing the period date when filing the MTD VAT is not possible. You'll want to consult your accountant on how to include the previous quarter's VAT. You can also contact the HRMC for more information on how to handle this.

Let me share with you this handy article about VAT for your reference: VAT return.

Please let me know if you have other questions. We're always here to help.