Chartered Certified Accountants
Tax Investigation and Disclosure Specialists

“Insights”

UK tax adviser reviewing an HMRC discovery assessment and earlier tax returns

What Is a Discovery Assessment and When Can HMRC Use One?

A discovery assessment allows HMRC to recover Income Tax or Capital Gains Tax that it believes has been underpaid for an earlier tax year. However, HMRC must meet legal conditions and act within the correct time limit. We explain when HMRC can issue an assessment, how far back it can go and what to do if you disagree.

Company director organising financial records shortly before the accounts deadline

Why Company Directors Leave Their Accounts Until the Last Minute

Many company directors do not delay their annual accounts because they are careless. More often, daily pressures, missing records, worries about tax or uncertainty about what the accountant needs cause the delay. However, waiting until the filing deadline creates avoidable risks for both the director and the company.

UK tax adviser comparing a tax return with financial information from several sources

How Does HMRC Find Undeclared Income? 7 Sources of Information They Can Use

HMRC does not rely only on the figures entered on a tax return. It can compare returns with information from employers, banks, letting agents, online platforms, overseas tax authorities and public sources. A difference does not automatically prove undeclared income, but it may lead HMRC to ask questions or open a compliance check.

UK taxpayer preparing for an HMRC meeting with financial records and professional representation options

Should You Attend an HMRC Meeting Without Professional Representation?

You can usually attend an HMRC meeting without an accountant or tax adviser. You may also choose not to attend an ordinary meeting. However, attending alone can carry unnecessary risks where HMRC is examining historic errors, undeclared income, overseas matters, large tax liabilities or possible deliberate behaviour.

UK sole trader reviewing a missed Making Tax Digital quarterly update with an accountant

Making Tax Digital: What Happens If You Miss a Quarterly Update?

Missing a Making Tax Digital quarterly update does not necessarily mean an immediate fine. HMRC will not issue penalty points for late quarterly updates in the 2026–27 tax year. From later tax years, however, a missed deadline will normally create a penalty point, and repeated failures can lead to £200 penalties.