15/05/2026
5 things HMRC notices immediately on tax returns
Most business owners don’t realise how many red flags can trigger extra attention from HMRC.
Here are 5 common ones:
❌ Claiming unusually high expenses
If your expenses look far higher than businesses similar to yours, it can raise questions.
❌ Mixing personal and business costs
Trying to claim personal spending as business expenses is one of the biggest mistakes we see.
❌ Large income changes
Big jumps (or drops) in income compared to previous years often get noticed.
❌ Missing or inaccurate records
No receipts, poor bookkeeping, or inconsistent numbers can create problems fast.
❌ Filing late repeatedly
Late tax returns and missed deadlines can increase the chances of penalties and extra scrutiny.
The good news?
Most tax issues are preventable with proper bookkeeping and planning.
Staying organised throughout the year saves:
✅ stress
✅ time
✅ penalties
✅ and often money
https://adenaaccountancy.co.uk/