Doubling Your Money This calculator demonstrates the power of compound interest. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content College Saving Contact me to develop an education investment strategy that can put your children on the path to success. Five Things to Know About 529 Plans Wherever your child is on their education journey, there's no better time to start saving for college than right now. The College Landscape After Tax Reform The Tax Cuts and Jobs Act could potentially impact your college savings plan. Here’s what you need to know.