Tax Letters Independent · not HMRC Check your letter
Menu

App coming soon

HMRC letter codes · One-to-many letters

OTM000574Letter to agents about provisional figures in clients’ returns

Published by its source on 3 October 2024. A date in the letter that has passed stays passed: what a passed date means.

Last reviewed 14 October 2026 · How Tax Letters checks its facts

In short

OTM000574 is the name of the file in which CIOT publishes this HMRC letter to agents. The number is not printed in the letter text. The letter is headed “Please amend the provisional figures in your clients’ Self Assessment tax returns”, and this published copy has a placeholder in square brackets where the date to act by belongs.

“Please amend the provisional figures in your clients’ Self Assessment tax returns … What you need to do by [3 weeks from date of letter]”

CIOT: copy of HMRC letter file OTM000574, published on its page · checked 14 October 2026

Information, not advice: this page reports what HMRC, GOV.UK and the bodies named publish about OTM000574. Each fact has its source and the day it was checked beside it.

When HMRC sends it

CIOT said, on its page for the HMRC letter file OTM000574, that HMRC had started a One to Many (OTM) letter campaign directed at tax agents, to engage with agents who had multiple clients who had submitted provisional SA tax returns.

“HMRC have advised us that they have recently commenced a One to Many (OTM) letter campaign directed at tax agents. The purpose of the letter is to engage with tax agents who have multiple clients who have submitted provisional SA tax returns”

CIOT: HMRC One to Many Agent Letter – Provisional figures in clients’ 2022/23 Self Assessment tax returns · checked 14 October 2026

What it asks

HMRC's letter file OTM000574 says some of the agent's clients' tax returns for 2022 to 2023 had provisional figures, and asks the agent to review these returns and amend them with the actual figures.

“some of your clients’ tax returns for 2022 to 2023 had provisional figures. … We need you to review these returns and amend them with the actual figures.”

CIOT: copy of HMRC letter file OTM000574, published on its page · checked 14 October 2026

HMRC's letter file OTM000574 asks the agent to contact HMRC to arrange a convenient time to talk about the returns and agree when they will be amended.

“Please contact us to arrange a convenient time to talk about these returns and agree when you’ll amend them by.”

CIOT: copy of HMRC letter file OTM000574, published on its page · checked 14 October 2026

Free help and HMRC contacts

HMRC's letter file OTM000574 gives the phone number 0300 322 9630 for the agent to call.

“You can do this by either: … calling us on 0300 322 9630”

CIOT: copy of HMRC letter file OTM000574, published on its page · checked 14 October 2026

HMRC's letter file OTM000574 points to GOV.UK for help and advice about submitting accurate tax returns.

“Go to GOV.UK and search: … for help and advice about submitting accurate tax returns”

CIOT: copy of HMRC letter file OTM000574, published on its page · checked 14 October 2026

Free help first

These routes are described by GOV.UK, TaxAid and Citizens Advice themselves.

  • HMRC's extra supportHMRC offers extra support if your health condition or personal circumstances make it difficult to contact HMRC, for example a mental health condition, financial hardship or being treated in hospital.
  • Someone to deal with HMRC for youYou can authorise a friend, relative or voluntary organisation to talk to HMRC for you and help you fill in forms.
  • TaxAidTaxAid helps people with tax problems who cannot pay for advice. Tax Help for Older People merged with TaxAid in July 2025.
  • Citizens AdviceCitizens Advice gives confidential advice online, over the phone and in person, for free.