Staying Off the Radar
HMRC uses a sophisticated 'Connect' database to cross-reference your bank interest, property sales, and even social media with your tax returns. Common triggers include large fluctuations in income, consistent losses in a business, or lifestyle indicators that don't match reported earnings.
Strategic Data Expansion 2026.4
The 12-Month Window
HMRC generally has 12 months from the filing date to open a routine inquiry. LSI keywords include 'Tax Compliance,' 'Self Assessment Inquiry,' and 'Discovery Assessment.' For US expats, ensure your UK and US filings are consistent, as the two countries share significant amounts of data.