It is quite common for tax codes to be wrong, particularly if your income or employment situation has changed, so it is worth taking a few moments to check that HMRC has the correct information about you.
If you file a Self-Assessment return you may need to pay your tax in three instalments, so it is useful to know when payments on account apply and when they can be reduced or removed.
For the current tax year, taxpayers with adjusted net income between £100,000 and £125,140 will face an effective marginal tax rate of 60%, as their £12,570 tax-free personal allowance is gradually withdrawn.
Married couples and civil partners could save up to £252 a year by transferring part of one partner’s unused personal allowance to the other, but you may need to cancel the claim if your income or relationship status
If your income exceeds £60,000 and you or your partner receive Child Benefit, you can now choose to pay the High Income Child Benefit Charge through your PAYE code instead of filing a Self-Assessment return; a simpler