HM Revenue & Customs is warning people not to throw away or overlook a Simple Assessment letter if one lands on their doormat. According to HMRC, the letter tells you how much tax you owe when that amount cannot be taken automatically through your tax code, and ignoring it can leave you with an unpaid bill.
The reminder was reported by Shropshire Council Newsroom, which carried HMRC’s message to customers. A Simple Assessment is not a scam or junk mail, so if the letter looks genuine and comes from HMRC, it needs your attention.
Below is what a Simple Assessment letter actually means, who tends to receive one, and how to deal with it before any deadline passes.
What is an HMRC Simple Assessment letter?
A Simple Assessment is HMRC’s way of telling you about tax you owe without you having to complete a full Self Assessment tax return. HMRC works out the figure using information it already holds, then sends you a letter setting out the amount and how to pay.
In short, it removes the need to file a return in some cases. HMRC calculates the bill for you, and you simply check it and pay. The letter itself is the assessment, so it should not be filed away and forgotten.
Who gets a Simple Assessment?
HMRC generally issues a Simple Assessment when tax is owed but cannot be collected through your PAYE tax code. People who commonly receive one include:
- Pensioners: those whose State Pension is more than their tax-free Personal Allowance.
- People with tax owed that can’t be coded out: where the amount is too large to be taken automatically through PAYE.
- Those who owe tax for other reasons: where HMRC already holds enough information to calculate the bill without a full return.
The exact eligibility rules for every individual case are not spelled out in HMRC’s reminder, so if you are unsure why you received one, the letter should explain the reason for your specific bill.
Why you shouldn’t ignore the letter
The core of HMRC’s message is simple: don’t ignore it. The letter shows a real tax debt, and that debt does not disappear if you set the letter aside. Because HMRC has already done the calculation, the amount is due unless you tell them something is wrong.
If you believe the figures are incorrect, you can query the assessment with HMRC rather than just paying. However, you generally need to raise a disagreement within the timeframe stated on the letter, so acting quickly matters.
How to check and pay a Simple Assessment
When your letter arrives, take these steps:
- Read the whole letter: it sets out how much you owe and the reason for the bill.
- Check the figures: compare the amount against your own records, such as pension and income details.
- Pay by the deadline: the letter states how much to pay and by when.
- Contact HMRC if something’s wrong: get in touch if you think the calculation is incorrect.
For example, if you are a pensioner whose State Pension pushed your income above the Personal Allowance, your letter would show the tax due on that excess and the date you need to pay it. You can review your details and pay through your account on the official HMRC website at gov.uk.
When is the deadline to pay?
HMRC’s general reminder does not set out a single universal payment date, because the deadline is printed on your individual letter. Each Simple Assessment carries its own due date, so the letter itself is the thing to check rather than a national cut-off.
Because late payment can lead to further action from HMRC, it is worth noting the deadline as soon as the letter arrives and paying, or querying it, well before that point.
How to tell a real letter from a scam
Scammers often imitate HMRC, so it is reasonable to be cautious. A genuine Simple Assessment relates to real income HMRC already knows about, and it will not pressure you into paying via unusual methods such as gift cards or by clicking a link in a random text.
If you have any doubt, do not use contact details from a suspicious message. Instead, go directly to the official gov.uk website or use the phone number HMRC publishes there to confirm whether the letter is genuine before you pay.
What to do next
If a Simple Assessment letter has arrived, the safest course is to check it against your records, note the deadline, and either pay the amount shown or contact HMRC to raise a query. Keeping the letter rather than discarding it means you have the reference details you need to act.
HMRC’s underlying point, as reported by Shropshire Council Newsroom, is that these letters are official and time-sensitive. Dealing with a Simple Assessment promptly avoids an unpaid bill mounting up and gives you the chance to challenge the figures if they look wrong.
