Find out the pros and cons of deferring your next payment on account, which is usually due by 31 July, along with other options for self-employed workers.
Find out how the government's off-payroll working rules could affect contractors and businesses, and how to make sure you're compliant
HMRC could issue fines of at least £100 to almost one million taxpayers who failed to file their self-assessment tax return by the 31 January deadline. Which? explains the penalties for delaying any further and excuses you could use to appeal.
Find out whether you need to file a 2018-19 self-assessment tax return to declare child benefit payments - even if you don't usually need to submit one
Which? explains why pension savers might need to complete a self-assessment tax return and tips on what to watch out for to get it right.
Find out what self-assessment tax rules you need to know to ensure you make the most of this year's expenses and allowances for self-employed workers.
Which?'s top tips on how to file your self-assessment tax return by the 31 January deadline and avoid a £100 fine from HMRC
Preparing your tax return? Here's our top tips on how to avoid overpaying your tax, explain which documents you'll need and the allowances you could claim.
Exclusive Which? research has found more than three in 10 people don't know which expenses can be claimed on their self-assessment tax return.
Find out what the government's planned changes to charges regarding disguised renumeration schemes could mean for you, and how your tax return could be affected.