VAT Returns are due to be submitted on a quarterly basis, unless you have registered under the annual VAT scheme.
Payment for any liability at the end of each quarter, must be made to HMRC within one month and seven days of the quarter end.
For example, if your quarter end is 30th April, you need to ensure the return is submitted and the payment received by HMRC, by the 7th June.
You can also make payment by direct debit which will automatically be deducted from your account, approximately one month and twelve days after the quarter end. The submission is still due within one month and seven days.