Don’t Spend the Fives
Here’s a savings trick that works if you use cash frequently. Every time you get a $5 bill, tuck it into a spot in your wallet and don’t spend it. That’s right, every $5 bill you come across — just stash it away. Every so often, deposit them into your savings account.
This works because $5 bills are less common than other denominations. As of Dec. 31, 2018, there were 3.1 billion $5 bills in circulation, according to the Federal Reserve. For comparison, there were 9.4 billion $20 bills and 12.4 billion $1 bills in circulation at that time. So tucking away your fives can be pretty painless.