My Boss Pays Me Under The Table And I Think He Screwed Me On My Taxes.

My boss is a slimy businessman. He owns his own company, his wife handles all the numbers for him. Multiple coworkers are skeptical of them. I’ve been working there just under a year now. June 2024 my boss told me that he would be pulling me from their payroll and would pay me in cash. He said something about how it would effect filing my taxes, but it was a very brief conversation and I could never get a clear explanation on my following attempts. It was very clear though, that he wanted me to think this would not screw me over in any way. I’m only 20 with no real knowledge on much related to taxes or how they work, my boss knows this. Basically I just want to know, how fucked am I? How do I make sure he doesn’t get away with screwing me over? I have proof of all of his wife’s under the table payments to me (over $5,000).