<prompt> Human: Im an app developer and one of my clients is paying me 40k in cash. As in we meet at a coffee shop, I show him progress on the app and he hands me a plastic bag with about 10k in 20s rubber banded together. According to him, the money is legal, but he doesnt like dealing with banks so he wishes to only do cash transactions.Ive already received about 15k, and bought a car, new laptop and some other things, but Im not sure what steps I need to do if I want to deposit the money into my bank account and how to file taxes at the end of the year.Any advice would be greatly appreciated, thanks!  <response>: Just deposit it and report it as you would any other income. 