Knowledge Hub
Clear guidance for every stage of an HMRC enquiry.
Written by specialists who deal with HMRC enquiries every day — organised by guide, problem, industry and question, so you can find what's actually relevant to your situation.
8 pages
In-depth guides
Full guides to 8 types of HMRC enquiry, from Self Assessment to Worldwide Disclosure.
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HMRC problems
Focused pages for a specific letter, error or situation, with immediate next steps.
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Industry guidance
How HMRC enquiries typically look for your sector, from landlords to construction.
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Questions & FAQs
Direct answers to the questions people ask most after an HMRC letter arrives.
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Recent articles and analysis.
Making Tax Digital
What Changes to Making Tax Digital Mean for the Self-Employed
Making Tax Digital for Income Tax continues to roll out for the self-employed and landlords — here's what actually changes in practice.
Read more →Compliance Checks
Five Common Mistakes That Trigger an HMRC Compliance Check
Certain patterns show up again and again in the enquiries we see — here are five of the most common ones.
Read more →HMRC Enquiries
Understanding HMRC's Risk-Based Approach to Selecting Enquiries
HMRC no longer relies on pure chance to decide who to check — here's roughly how the risk-based system works.
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