"Nudge Letter." What does it mean when the tax office "gently reminds" you about taxes?

Not every letter from HMRC means trouble. But some can alarm even those who have always filed their taxes on time. These are the so-called “nudge letters” which are letters sent by the British tax authority (HMRC) to individuals who, according to their system, may have undeclared foreign income. They contain no threats or legal clauses. Instead, there's a polite tone and a seemingly innocent question:

“Have you declared all your foreign income?”

Many people are unaware that such a letter is the first sign that HMRC has data on their assets or earnings from Poland, whether from deposits, bonds, or rentals. This is precisely why such letters often end up in a drawer or straight in the bin, as they seem trivial. Meanwhile, this is the moment to act before a minor oversight escalates into a serious problem.

Many taxpayers wonder how the tax office knows about Polish deposits or property rentals. HMRC receives this data automatically as part of the international exchange of tax information – Common Reporting Standard (CRS).

This is a global system where banks and financial institutions from over 100 countries, including Poland, automatically share information about accounts, interest, and investments of individuals living abroad, without first asking for your consent.

In recent years, HMRC has sent tens of thousands of such letters. The goal is not to immediately penalize the taxpayer; on the contrary, it's to encourage them to review their tax affairs themselves and, if necessary, settle any outstanding liabilities through a Tax Disclosure.

Nudge letter - they thought it was a mistake too

We've seen many such situations. Clients who initially ignored the official letter, putting it off "for later," only came back to us when the matter had already become complicated. That's why we share these stories as a warning, so you don't make the same mistake.

One of our clients, Mr. Marek, has been living in the UK for over a decade. He invested in Poland, mainly in government bonds. When he received a letter from HMRC, he was convinced it was a mistake. The letter stated that the department "holds information indicating foreign income on which tax may be due in the UK."

At first, Mr. Marek was sure it was a mistake. “These bonds are in Poland, and I live in the UK, so how would they know about it?” he explained. He was convinced it was a mass mailing sent to everyone. He put it in a drawer and forgot about it.

However, a few months later, when HMRC contacted him again, he realized it wasn't a coincidence. He then returned to us fully aware that the matter had become serious and that the letter wasn't a general warning, but specifically for him.

We explained that Polish financial institutions themselves transmit data on interest or investment income as part of the CRS system. Ultimately, Mr. Marek filed amendments and paid a small amount for bond interest. The entire matter concluded without penalties precisely because he eventually responded!

A similar letter reached Mr. Bartek, who received an almost identical letter - “We have information that shows you may have received overseas income or gains…”

The letter was polite, without threats or legal jargon.

Mr. Bartek therefore assumed it was just a formality that didn't require his action, but there was no doubt that HMRC knew Mr. Bartek had income from bank deposits and bonds in Poland.

Several months passed until HMRC contacted him again, this time more assertively. Our client didn't know how many years he needed to declare or what his options were.

During the consultation, we conducted an in-depth analysis of his situation. It turned out that although HMRC suggested irregularities over 11 years, according to applicable regulations, only 7 of them needed to be declared. Thanks to our knowledge of tax law for specific tax years, we helped him organize his declarations and submit a full Tax Disclosure.

After the case was concluded, HMRC confirmed that the matter was closed. Mr. Bartek later admitted he only regretted one thing: not reacting sooner.

In his case, the letter worked exactly as HMRC intended: it was a gentle reminder that helped the taxpayer rectify the situation independently.

Mrs. Anna behaved quite differently. She never received any letter.

However, she came across a newspaper article about HMRC's 'nudge letters' and decided to seek more information.

She visited the HMRC website and read about changes concerning the so-called Let Property Campaign which is income from property rentals.

She began to wonder if her rental income in Poland should also be declared in the UK. She contacted us voluntarily, before HMRC reached out.

After analysis, it turned out that she should indeed have declared this income. Thanks to quick action and voluntary disclosure, we significantly reduced the penalty. Instead of paying up to 100% of the overdue tax plus interest, Mrs. Anna paid less than £300, including interest.

Her story shows that it's worth acting proactively, before a letter lands in your mailbox.

Let's not think that if we live in another country, it doesn't concern us. Today, information about accounts, deposits, and properties flows automatically between countries.

When can you expect a letter from HMRC?

The most common reasons why the tax authority sends 'nudge letters':

· income from bank interest or bonds,

· rental income from overseas property,

· property sales

· profits from investment sales,

·      income from cryptocurrencies or company shares,

· money transfers from foreign accounts.

The letter's purpose is to encourage action, not to intimidate.

However, don't be fooled by the polite tone of the letter – we always warn our clients about this. It's not just a simple notification, but a subtle signal from HMRC that they are aware of your income and are giving you a chance to sort everything out yourself.

This letter is your last chance to act on your own terms before the tax office does it for you and you are held accountable.

What should you do if you receive such a letter?

If you've received a letter from HMRC, don't ignore it, but don't panic either.

It's a sign that the tax office already has data indicating your foreign income, but it doesn't necessarily mean a formal investigation has begun. The best thing you can do is act calmly and deliberately.

Contact a specialist who can help you verify if all years and amounts have been correctly accounted for.

Sometimes the matter is quite straightforward, but without professional analysis, it's easy to overlook something.

And most importantly, don't delay. The sooner you respond and submit Tax Disclosure, the greater the chance that everything will conclude without penalties, interest, or stress.

Therefore, if you receive a letter, treat it not as a problem, but as an opportunity to rectify something. As our clients' stories show, the worst thing you can do is nothing. In such situations, time works only one way – in favor of those who react immediately.

A letter from HMRC is not the end of the world. It's more of a reminder that it's better to act sooner rather than later.

And if you haven't even received a letter yet, it's all the more reason to act today!

Because, like Anna, you can be one step ahead of HMRC and sleep soundly knowing everything is in order. So, if you've received a letter from HMRC, or suspect something might need clarification, don't wait for a reminder from the tax office. Do it wisely and proactively, and if you need experts in this field, contact us at TaxOne we will help you check, organize, and resolve the issue before it turns into a problem.