If I'm not paying any taxes, all I've got is money being deposited into my various bank accounts from my various income sources. I've exceeded the tax free allowance many times over on each account for the last 5 years. As far as I'm aware the only tax reporting the bank has is on the interest they pay on your balance, they just deduct it unless you've declared otherwise. Correct? Or do they report your balances to the government? I know there's much stricter regulations if you deposit a large amount of cash, but that's to do with money laundering and terrorism, and these are all transfers anyway. So, unless of course I'm subject to an audit which they only do to about 1-2% of population and they're usually people who do pay taxes to make sure they're paying the full amount, how would they catch on to my income and the fact I don't declare it? Should I bother to declare it?