What are the risks of holding your profits in DAI?

So after watching the Maker Dao deep dive video I was wondering what risks would I take on for taking my profits in DAI through centralized exchanges. For an example if I made a 2x profit on a certain coin/token through investment and want a stable price to keep the value will I be able to exchange it to DAI without any real taxation? I guess I would have to pay the fee for the exchange whatever that would be but I imagine that is less than what governments are taking right? If anybody can breakdown if this is possible please let me know.