Self-assessment tax returns for 2019-20 must be filed by midnight 28 February to avoid a £100 late fine, but you'll still face interest on the outstanding tax.
Which? explains what fines you'll face from HMRC and when they kick in, plus the child benefit rules catching people out.
HMRC won't fine late filers in February, but it's still a good idea to file your tax return as soon as possible - these tips could make it easier.
If you save into a pension you might need to fill in a self-assessment tax return. Find out what you need to declare and what tax relief top-ups you can claim.
The tax authority says self-assessors won't get fined if they file their tax return before 28 February - but the tax bill deadline is still 31 January.
From forgetting expenses to missing UTR numbers, we reveal some potential things that could go wrong with your self-assessment tax return so you can avoid them.
Find out if you're missing out on claiming tax relief on expenses you've had to pay for to do your job - whether you're employed or a self-employed worker.
Find out what HMRC deems to be a 'reasonable excuse' for missing the self-assessment tax return deadline.
Which? explains your options for settling the tax you owe from income earned during 2019-20, plus what penalties you could face if your payment is late.
Find out how to protect yourself from a new HMRC scam, in which fraudsters steal personal details to trigger huge refunds from fake tax returns.