Check your donations to charity
The UK has one of the most generous tax regimes when it comes to making donations to good causes. The most popular way to be generous is by via Gift Aid, which boosts donations by a quarter (25%).
For example, if you donate £100 to a charity, then the charity gets your £100 plus £25 of Gift Aid. Higher-rate (40%) taxpayers can reclaim a tax rebate of a fifth (20%) of the total gift, which comes to £25 in this example. So, be sure to declare all your charitable donations to the taxman, including those made outside of Gift Aid.