There’s an easy way to get all your tax back but it involves tying up your money. Basically all you have to do is to put everything you earn above the personal allowance of £12,700 into your pension. If you do it through work it’ll be done before tax so you won’t pay tax, if you do it out of taxed take home pay into a private pension or SIPP HMRC will add 25% of what you pay in to your pension provider/SIPP account provider to reimburse your income tax. If you are a higher rate tax payer you’ll need to make a manual reclaim for the additional tax money. Pay in £80 a week out of take home pay and get £100 in total added to your pension.