“[A taxpayer] is entitled to arrange his affairs so as to reduce his liability to tax” – Lord Wilberforce (WT Ramsay v HMRC, House of Lords).
The tax investigation process allows HMRC to identify errors in tax returns, recoup any money owed and stop people getting away with submitting fraudulent claims.
Every year, there’s a ‘tax gap’ – the difference between the tax that should be collected and the amount that’s received. It’s HMRC’s job to make sure this gap is as small as possible. Last year HMRC calculated a £35.5 billion shortfall. More than half of missing tax is usually traced back to small businesses and individuals via tax investigations, with a significant proportion of the tax loss being from innocent error.
So, if you’re the recipient of a tax investigation notice, a tax inspector is going to be delving into your records to work out if you’ve underpaid your tax.