Tax returns for the 2017-18 tax year are due at midnight on 31 January 2019. If you're only just getting started, use our tips to meet the deadline.
From what documents you'll need to tax-allowable expenses, this is everything you need to know about filing a self-assessment tax return
Based on a report by the Office of Tax Simplification, we look at how innovative fintech might change how people pay tax in the future
Tax returns are due in just four days - so if you're a landlord, make sure you know these 13 things about tax reliefs, allowances and deductible expenses.
With less than a week to go until the 31 January deadline, freelancers and self-employed workers across the country will be scrambling to complete their submissions. So, are you up...
If you file your tax return late, you need a reasonable excuse to avoid a fine. Which? explores some of the strangest excuses HMRC received in 2017.
Errors on tax returns can cause you to overpay your tax bill. Which? explains the most common reason for mistakes and how you can fix them.
Find out about tax-deductible expenses for employed and self-employed people, and how much it could cost you if you forget to claim them
Find out how you measure up against those who took our Great British Tax Quiz - half of whom didn't know what their personal allowance was
With just over three weeks before the self-assessment deadline, 48% of returns are still outstanding. Which? shares the top tips for filing on time.