Here is my list of the seven best investments to make in 2021: Build Your Cash Reserves. ... Stocks – Still the Way to Go in 2021. ... Real Estate. ... Pay down or Pay Off Debt. ... Launch or Accelerate Your Retirement Savings Plan. ... Make 2021 the Year You Begin Investing in Yourself. ... Invest in a Side Business. ... Bottom Line.What does investing do for you? Investing helps you beat inflation—through interest earned—ensuring your money's purchasing power stays strong. Saving is usually reserved for short- and intermediate-term goals, whereas investing is better suited for long-term goals like retirement.