Headed to Vegas on Friday for a quick two nighter. I'll be leaving Las Vegas early Sunday morning and heading straight to Mexico for some R&R. My cousin is still on the fence about joining me so i might be going solo. Let's say I do really well and have more than 10k in cash when I go to leave. Leaving the country with more than 10k (cash/checks etc) requires a declaration saying you are doing so. I think I would also need to declare something in Mexico as well as on the way back. It would be easy to prove where the money came from if I win at slots. Probably a bit harder if I win at tables. I obviously want to avoid this all together. The obvious option would be to visit a Bank of America and do an ATM deposit or potentially see a teller if I win big on Friday and the bank is open on Saturdays. I'm thinking I could also just not declare it and likely not have any problems (hate to even go to Mexico with more that $500 in cash). Any other ideas on what I could do to remedy the situation? If my cousin comes then I will just send the cash with him.