At 20 years old I think it's important to keep the cash liquid and safe. There's so much that can change in your life that the money can come in handy for, and

At 20 years old I think it's important to keep the cash liquid and safe. There's so much that can change in your life that the money can come in handy for, and there are so many ways that access to that money could change your life. That said, in the US, it's also a good opportunity to max out a Roth IRA every year. There's a lot of upside to Roth IRAs and not too much downside: you can deduct your contributions anytime without any penalty or taxes. And in retirement years, the gains can be withdrawn tax free. In a Roth IRA you can hold a wide variety of assets, real estate trusts, and metals. But overall I'd just hold onto the money as money and treat it as a rainy-day fund for the rest of your life.