Hack 3 · Savings Foundations
Spare Change Booster
The Spare Change Booster rounds every card purchase up to the next dollar and automatically invests the difference. It turns money you would never have noticed into a real, growing investment account without requiring a budget or any market knowledge. Round-ups alone typically put $100 to $500 a year into the market for an average spender.
How to do it
- Connect a round-up app to the card you actually spend on.
- Pick a hands-off portfolio option rather than picking individual stocks.
- Leave it running and check it no more than a few times a year.
What it typically saves
Typically $100 to $500 a year invested from money you never notice leaving.
Questions people ask
Is this a good way to build wealth?
It is a good way to start. Round-ups build the habit, but real progress comes when you add a recurring deposit on top.
Do the fees eat the gains?
They can on very small balances, where a flat monthly fee is large relative to what you have invested. Check the fee against your balance before you commit.
Is my money locked up?
No, it is an investment account you can withdraw from. But the balance moves with the market, so short-term withdrawals can lock in a loss.
Go deeper
This is the short version. The full walkthrough lives in Stop Losing Money, book 1 of The Everyday Money Upgrade — where this hack comes with the fee math that tells you when round-ups are worth it, how to layer a recurring deposit on top, and what to do in a down market.
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