But when under suspicion years later, and there's no record of you buying groceries for the past three years with your cards, or spending massively less than yo

But when under suspicion years later, and there's no record of you buying groceries for the past three years with your cards, or spending massively less than you should have, and no records of ATM cash withdrawals, it's painting a pretty clear picture of you spending money that you didn't earn. Your best bet might be pretending to become an artist and then selling paintings for cash at art shows, and then reporting said income and getting taxed on it. But these frequent large cash deposits trigger mandatory reporting by your bank, and if done frequently enough for a large enough amount of money, you might get people asking you questions