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🇬🇧 United Kingdom

That HMRC letter?
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HMRC sends millions of letters every year. Here's what yours means and what to do about it.

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Background

What is HMRC?

HMRC (His Majesty's Revenue & Customs) is the UK's tax authority. They handle income tax, National Insurance, VAT, and tax credits. Their letters range from routine tax code changes to urgent payment demands. Even native English speakers find them confusing due to the bureaucratic language.

Common Letter Types

What's in your envelope?

Tax Code Change (P2)

Your tax code is changing. This affects how much tax your employer deducts from your salary. Check if the new code is correct.

Self Assessment Notice

You need to file a tax return. Comes with a deadline — miss it and you'll get an automatic £100 fine.

Payment Demand

You owe tax. Shows the amount, deadline, and payment methods. Late payment incurs interest and penalties.

Tax Refund (P800)

Good news — you've overpaid tax and HMRC owes you money. Follow the instructions to claim your refund.

Why immigrants struggle with HMRC

The UK tax system is different from most countries. Tax codes like '1257L' look like gibberish. Self Assessment deadlines are unforgiving. And HMRC's letters use formal language that trips up non-native speakers. One wrong tax code can mean hundreds of pounds over- or underpaid.

FAQ

Common questions

What does an HMRC letter mean?+
HMRC letters cover tax calculations, payment reminders, tax code changes, Self Assessment notices, and compliance checks. The reference number helps identify the type.
Do I need to respond to an HMRC letter?+
Many HMRC letters require action — especially payment demands, Self Assessment reminders, and information requests. Tax code notices may just be informational.
What happens if I ignore an HMRC letter?+
Ignoring HMRC can lead to penalties, interest charges, and enforcement action. Self Assessment late filing attracts an automatic £100 penalty.
Related

Other official letters explained

IRS (US) Finanzamt (Germany) Impôts (France) Belastingdienst (NL)
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