Hi, honestly your better off keeping it cash because you will get taxed and even your bank account frozen cause your bank may try to pull a fast one  and start making accusations like 'how do we know this money wasnt made illegally' etc. you dont want the hassle buddy.

If you want to buy items and the only way to do it is via card or bank trf then you deposit the cash into your account and pay for it straight away.

A really illegal solution is to launder it and pay the minimal tax you can.

Dont worry in a few years time youll be making all your transactions out of your wallet and your kids will be asking you questions like 'What was it like having to deal with CASH and BANKS' like your a really old guy lol.