How do I submit a quarterly update to HMRC?

How do I submit a quarterly update to HMRC? You send it from MTD-compatible software by 7 August, 7 November, 7 February or 7 May. Each update gives HMRC running totals of your income and expenses for the tax year so far. No. A quarterly update is a report, not a payment. Your tax is still paid on the usual dates. Yes. GOV.UK says you must still send an update even if you had no income or expenses in the period. Usually not. Each update is a running total for the tax year so far, so you correct the records and the next update carries the right figures. Changes after the fourth update mean resending that fourth update before your tax return. Read the full answer, with every source, at rightotax.co.uk.