In Indonesia, the tax policy on crypto ownership has not been regulated despite several plans.
That's odd that any government right now wouldn't have some sort of tax or regulatory policy regarding cryptocurrency. It's not like bitcoin was introduced to the world a few months ago--governments have had over a decade to figure out how they're going to deal with its existence.The best people to talk to are Binance themselves as they will guide Mr John with facts and right way of going about this. Just avoid pseudo names when something goes wrong it's a tedious process to resolve.
I agree with all of that. Sounds like a somewhat complicated situation OP's described--and I'd also second the opinion of those who advised OP's friend not to use Binance like a bank. This is crypto we're talking about, not fiat, and while Binance might be the most reputable exchange out there, there's no telling what could happen with them or any other exchange. It's far better to control your own bitcoin (or whatever coin) using wallets that you yourself control. 
