How round-ups add up
Round-up apps and bank features move the spare change from each card purchase into savings or investments. A $3.40 coffee becomes $4.00 and 60 cents is saved. Because cents are spread evenly, the average round-up is about 50 cents per purchase.
Yearly savings = purchases per week × average round-up × 52
At 15 purchases a week, that is about $390 a year. Invested at 7% for ten years, it grows to about $5,600. Many apps let you multiply round-ups by two or three, which scales the result in the same proportion.
Is it worth it?
Round-ups are a painless way to start, especially for people who find saving hard. Watch for monthly app fees, though: a $3 monthly fee on $390 a year of savings takes almost 10%. Once the habit is in place, a fixed automatic transfer usually saves more.
Making round-ups go further
Round-ups on 15 purchases a week at an average of 50 cents add up to about $390 a year. Invested at 7% for ten years, that grows to around $5,600. Many apps let you double or triple each round-up, and a 2x multiplier on the same spending saves about $780 a year, which is where the feature starts to make a real difference.
Round-ups work best as a starting point rather than a whole plan. Once you see the money building, adding a small fixed transfer each payday, even $25, usually does more than the change alone. If your app charges a monthly fee, compare it with what you save: a fee that takes a large share of a small balance can make a free high-yield savings account with automatic transfers the better option. The save per day calculator turns any goal into a daily or per-paycheck amount.
Common questions
Should I double my round-ups?
If you can afford it, yes. A 2x multiplier on 15 purchases a week saves about $780 a year instead of $390, with the same painless habit.
How much can you save with round-ups?
Typically $200 to $600 a year, depending on how often you use your card.
What is the average round-up?
About 50 cents per purchase.
Do round-up apps charge fees?
Some do. Compare the fee with what you expect to save.
This calculator gives estimates for planning. Real returns, rates and prices change, so treat the result as a guide rather than a promise. Read how we build and check our calculators.