If you choose not to claim child benefit, you may be reducing your State Pension entitlement. Which? explains how child benefit NI credits work.
Chancellor of the Exchequer Philip Hammond has delivered the first Spring Statement. Find out the latest economic updates and what they mean for you.
Before the new tax year starts, find out how to use up your tax allowances for the 2017-2018 year and what steps you can take to minimise your bill.
A shake-up to the Scottish income tax system will see 70% of people pay less tax, though some are likely to pay more. Which? explains how much you'll pay.
Chancellor Philip Hammond has ordered a shake-up of the inheritance tax system - but how does IHT work, who pays and what is likely to change?
The deadline to submit your tax return is tomorrow (31 January) - and you'll need to act fast to avoid a fine. Find out how to submit your return with our last-minute tips.
Fake texts from 'HMRC' have claimed numerous victims - but now HMRC is fighting back with a high-tech solution. Find out how to avoid this scam.
Around 25% of people submitting a tax return have overpaid due to an error. With a week until the tax return deadline, Which? shares our top tax tips.
As HMRC reveals the most improbable excuses and expenses on last year's tax returns, Which? explains how you can manage your self-assessment in 2018.
Which? explains tax payment on account - how it's calculated, who needs to pay HMRC in advance, and how to adjust your payments if your income changes.