Which country are you based in? I can give some general guidance for most places but if you're in the UK I can sort you out for this one with a tad bit more information.Firstly - what quantity of cash are you dealing in? If it's 1,000 a week say that will be difficult to pull without the taxman coming to gnaw at your legs, but if it's say 100 a week or any moderate amount then it isn't going to attract much attention as bank transfers are generally seen as safe unless you're flagged for being a possible smurfing agent. For small amounts, you can probably justify it as you've had bitcoins for a while and sold them off and as long as you don't have some dodgy history or previous allegations they'll probably ask no more questions, but the cashier may not be fully aware of what bitcoins are so could take a bit of explaining so they understand.Saying it is a business profit is different as it depends where you originally received the bitcoins from - plus if you don't keep accurate accounts for a business you can land yourself in real trouble with the tax authorities so unless you're trying to launder some serious money, I wouldn't go down this route without taking advice from various people in-the-know and not information from the internet or the wannabe launderers on this forum who me and some of my associates here can't help but laugh at for their terrible advice.