CRIS-If you make $75,000 a year and don't report 15K, yeah, the IRS probably won't find out, because you've already payed a healthy amount of taxes.If you are 18 years old, with a $5 an hour job, and go buy a lot of new stuff with that$7500, yes, they MAY find out. How do you think the IRS guys find cases? They have little snitches out there. Their little snitch is at the titty bar, who just saw you blow a grand, and leave in a Limo, guess what? Local IRS guy finds out. BUT, it's only $7500, so I don't think they will be too worried about you, unless their caseload is light, and they had a bad day when they caught wind of all your spending with the lack of income. Good day