Interest earned on a $50,000 deposit can quickly stack up with both CD and high-yield savings accounts now. Getty Images

It can take an extended, concentrated effort to save any amount of money. But if you can save a significant, five-figure sum, you should be proud of your accomplishment. You should also look to take advantage of it as best you can by making that money work for you in today's still elevated interest rate environment. And while stock market returns on a $50,000 investment, for example, can be robust, they can also be volatile and difficult (and stressful) to rely on. Fortunately, there are still attractive, reliable savings vehicles in which your principal will remain the same and the interest earnings can be substantial.

Certificate of deposit (CD) and high-yield

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