How to calculate your savings rate (and what's a good one)
Savings rate is the single most predictive number for financial freedom. Here's the formula, real-world examples, and the rate to aim for.
Ask ten financial coaches "what's the one number I should track?" and at least eight will say the same thing: your savings rate.
Not your net worth. Not your income. Not your credit score. The percentage of every dollar you earn that you actually keep.
The formula
$$\text{Savings rate} = \frac{\text{Income} - \text{Expenses}}{\text{Income}}$$
In plain English:
(monthly take-home pay - monthly spending) ÷ monthly take-home pay
Multiply by 100 to get a percentage.
A worked example
Sara takes home $5,200/month after taxes. Her monthly spending — rent, food, gas, the streaming services she keeps forgetting to cancel — averages $4,160.
(5200 - 4160) / 5200 = 0.20 = 20%
Sara's savings rate is 20%. Of every dollar she earns, twenty cents stay with her.
Gross or net? Take-home is the honest one.
You'll see two conventions:
- Net savings rate — based on take-home pay. This is what shows up in your checking account; it's the rate that matters for behavior.
- Gross savings rate — based on pre-tax income. This is what FIRE blogs and retirement calculators use because it accounts for 401(k) contributions before they hit your paycheck.
Both are valid. We default to net at WealthVitals because it's the number you can actually feel and change.
What's a "good" savings rate?
| Rate | What it means |
|---|---|
| < 5% | You're living check to check. A single surprise can put you underwater. |
| 5–10% | Survival mode. You're not falling behind, but you're not building either. |
| 10–20% | Healthy. This is the long-term comfortable middle. |
| 20–40% | Strong. You're meaningfully accelerating toward financial freedom. |
| > 40% | FIRE-track. Decades of work compress into years. |
The widely-quoted Mr. Money Mustache chart shows that at a 50% savings rate you can retire in about 17 years, regardless of income. At 10% it takes ~50 years.
Three levers to move it
- Cut the big three — housing, transportation, food. A 10% reduction here moves your rate more than canceling every subscription you own.
- Raise the top line — a $5K raise, fully saved, can lift your rate 5+ points overnight.
- Automate the gap — set up an auto-transfer to savings the day after payday. What you don't see, you don't spend.
The compounding trap
A 20% rate doesn't make you twice as wealthy as a 10% rate — it makes you wealthy roughly twice as fast. Time is the actual asset compounding here. Which is why the worst time to start saving is "next year" and the best time was ten years ago.
Want to know your real number? Open a free check-up and we'll calculate it from your last 90 days of activity automatically.