Prefer to watch? The whole idea in a 50-second Short on YouTube →
Step 1: the plain math
- $5 × 365 days = $1,825 a year.
- $1,825 × 10 years = $18,250. No interest, no tricks. Just the same $5, every day.
That's a used car, a year of rent in many cities, or a solid emergency fund. And most people don't decide to spend it. It just leaks out in small pieces.
Step 2: what if you invested it?
Now say you put that $1,825 into savings or investments at the end of each year, and it grows by 7% a year. After 10 years you'd have about $25,200.
| After | Just saved | At 7% a year | At 10% a year |
|---|---|---|---|
| 1 year | $1,825 | $1,825 | $1,825 |
| 5 years | $9,125 | ≈ $10,500 | ≈ $11,100 |
| 10 years | $18,250 | ≈ $25,200 | ≈ $29,100 |
7% is an example, not a promise. Real returns go up and down, some years are negative, and investing has risk. This is simple math, not financial advice.
What about 10%? That's not a crazy number either: over long periods (many decades), the US stock market (S&P 500) has averaged roughly 10% a year before inflation. At 10%, the same $5 a day grows to about $29,100 in 10 years. But "on average" hides bad years: some years the market drops 20% or more, so think of 7–10% as a long-term range, not a yearly promise.
The extra ~$7,000 is what time does to money that keeps working. That's the real lesson: small money + time becomes big money, in both directions.
Step 3: this is not "never buy coffee"
Cutting everything you enjoy doesn't last. People try it for two weeks and then give up. A better rule:
- ✅ Keep what you love. If your morning coffee is the best part of your day, keep it.
- ❌ Cut what you don't notice. The delivery fee on food you could pick up, the snack you buy out of habit, the app you forgot you pay for.
Most people have at least one $5 habit they wouldn't miss. The hard part is seeing it, because it never shows up as one big number.
Find your $5 habit in one week
- For 7 days, write down every small spend, even $1.
- On day 7, look for anything that shows up again and again.
- Multiply it: daily cost × 365. Is that number worth it to you?
- Pick one habit to cut or shrink. Move that money to savings or to a debt you're paying off.
One week is enough. You're not building a perfect budget, you're just looking for the leak.
Where MoniTabs fits
The Wallet tab in MoniTabs makes the one-week test quick: tap +, type the amount, pick a label like "Coffee" or "Delivery", done. Spending is grouped into Needs, Wants and Debts & Savings, so at the end of the week you can see how much went to small "wants" you didn't plan. An optional evening check-in reminder helps you not forget to log. Free, no account, and your entries stay on your phone.
Want a simple way to split the money you free up? Read the 50/30/20 rule. Paying off debt? See how to pay off debt in 4 steps.
- Install MoniTabs from Google Play (free, no account).
- Choose "I want to control my spending".
- Log every small spend for 7 days, then check your Wants.
Frequently asked questions
How much is $5 a day over a year?
$5 a day is $1,825 a year ($5 × 365). Over 10 years that is $18,250 without any interest.
Where does the $25,000 number come from?
If you invest $1,825 at the end of each year and it grows 7% a year, you have about $25,200 after 10 years. At 10% a year (roughly the long-term US stock market average before inflation) it is about $29,100. These are only examples: real returns go up and down, and investing has risk.
Should I stop buying coffee to save money?
Not if you love it. The goal is to find small spends you don't really notice or enjoy, and move that money to savings or debt payments instead. A money tracker makes those small spends easy to see.