The rule in two lines

  • Annual supplies above SAR 40 million: a monthly return, due by the end of the following month.
  • Annual supplies up to SAR 40 million: a quarterly return on calendar quarters, due by the end of the month after the quarter.

So Q1 (January to March) is due by 30 April, Q2 by 31 July, Q3 by 31 October and Q4 by 31 January of the following year.

The return starts with the invoice

The output VAT on your return is the total VAT on your invoices and notes for the period. An invoice issued with the wrong VAT, or a credit note never issued, shows up as an error in the return. A credit note reduces the VAT of the period it is issued in, not the period of the original invoice, and a debit note increases it.

That is why it helps to have all your invoices and notes in one place before you prepare the return.