The UK’s revenue and customs authority, HMRC, has issued a warning to Britons who have missed the Self Assessment tax return deadline, encouraging them to take immediate online action rather than making phone calls to HMRC. The notice, shared via social media, emphasizes the importance of filing one's tax return and resolving any outstanding tax liabilities as soon as possible to avoid penalties.

HMRC’s online services provide a streamlined approach for taxpayers, allowing them to submit self-assessments if they are self-employed or have other income sources, including rental income. It also enables users to review past returns, view current debts, print tax calculations, and opt for a paperless notification system, making it easier for individuals to manage their tax responsibilities digitaly.

First-time filers are also reminded to register for Self Assessment before attempting to file online. This encouragement from HMRC highlights the agency's efforts to simplify the tax filing process, making it easier for citizens to stay compliant and avoid late fees, especially as deadlines approach.