Self Assessment isn’t just for the self-employed — company directors, landlords, higher earners with untaxed income, and even PAYE employees with large work expenses can all find themselves required to file a return, sometimes without realising it until a letter from HMRC arrives.
Getting to grips with the system means understanding what an SA100 actually is, what your UTR number is used for, which deadlines apply to paper versus online filing, and what happens if you miss one.
This section breaks down the Self Assessment process step by step, so you know exactly what’s expected of you and how to avoid the penalties that catch so many taxpayers out.
Discover more about what a Self Assessment tax return is, why you have been sent one, or if you should be registering to fill one in:
Free tax rebate guides and calculators helping UK taxpayers claim HMRC tax refunds since 2001.
