HMRC problems

What has happened? Find the immediate next step.

Shorter, focused pages for a specific letter, error or situation — for when you need to know what to do right now.

Letters and requests

What an HMRC nudge letter means, why you've received one, and how to check whether a disclosure is needed.

The first steps to take after receiving an HMRC compliance check letter, from identifying scope to protecting your deadline.

What an HMRC discovery assessment means, the time limits involved, and how to challenge one.

How to correct a mistake on a Self Assessment return, including amendment windows and the right disclosure route.

How to correct an error on a submitted VAT return, current thresholds and the right notification method.

What to check before appealing an HMRC late filing penalty, including deadlines and reasonable excuse evidence.

When HMRC can request bank statements, your rights, and how to prepare a relevant response.

What to do if you've forgotten to declare taxable income, and how to work out the correct disclosure route.