Well, it's inefficient (you'd lose ~3%+3% transaction fees) and you can only do 100k every 1/2 hour, but if you really wanted to bank it, you could sell it to the market and then buy it right back. When you bought it, it'd be in your central bank.
That said, I wouldn't do it, because I'm fine dumping most of my spare resources on a core planet, but it's your call.