17/10/2026
HMRC wanted approximately £17,000 💷from our client.
After challenging their decision, the final outcome was:
✅ £0 tax
✅ £0 penalties
✅ £0 interest
Here’s how we did it. 👇
Our client ran an online business 🗂️alongside her full-time job.
HMRC opened an investigation and had reviewed her tax affairs and rejected many of her claimed business expenses, applying a standard allowance of just 20% of her sales.
The potential bill? Approximately £17,000.
She was worried about how she would pay it.
When she approached us, we identified problems with the information previously submitted to HMRC.
We reconstructed her tax position, organised her records dating back to 2019, prepared the correct tax returns, and calculated her actual business profits and losses.
Then we challenged HMRC’s decision.
What happened next was interesting.
HMRC initially offered to allow 20% of the expenses.
We challenged it.
They increased it to 30%.
We challenged again.
They increased it to 50%.
We still weren’t satisfied.
We asked HMRC to explain the legal basis for refusing the remaining expenses and provide a detailed breakdown of its calculations.
We made it clear that we were prepared to take the matter further.
Eventually, HMRC accepted 100% of the expenses we had claimed.
The final result?
✅ Tax: £0
✅ Penalties: £0
✅ Interest: £0
A potential £17,000 tax bill 💵 became £0 payable following our challenge.
The lesson?
Never assume HMRC’s first decision is necessarily the final answer.
Not every expense is allowable, and not every HMRC decision can be overturned. But when you have the evidence 🧾and legislation to support your position, challenging an incorrect decision can make a life-changing difference.
Facing an HMRC investigation or a tax bill you believe is wrong?
Before accepting it, get your position properly reviewed.
We help individuals and business owners correct historic tax returns, review HMRC assessments, and challenge decisions where the facts and legislation support doing so.
📩 Send me a private message if you need help with an HMRC tax investigation.