Find what percent of income you save, compare against 15% and 20% benchmarks, or get the amount needed for a target rate.
Savings Rate Formula
Your savings rate is the share of income you keep rather than spend:
R = S / I * 100
To find the savings amount that hits a target rate, the calculator rearranges it:
S = I * R / 100
Variables:
- R is the savings rate, as a percentage
- S is total savings per period – savings account deposits, retirement contributions, brokerage investments, and extra debt principal payments
- I is income for the same period. Most people use take-home (net) pay; gross works too as long as you use the same basis consistently
Pick what you want to find at the top. “My savings rate” takes income and the amount you save and returns the rate with benchmarks at 15% and 20%. “How much to save” takes a target rate and returns the monthly, annual, and per-paycheck amounts that get you there. Enter amounts per month or per year – the toggle applies to both fields.
What Different Savings Rates Achieve
Savings rate is the single biggest lever on how quickly you build wealth. As a rough guide, this table shows roughly how long it takes to accumulate one year of living expenses at each rate, assuming spending equals income minus savings.
| Savings rate | Monthly amount on $5,000 income | Years to save 1 year of expenses |
|---|---|---|
| 5% | $250 | 19 years |
| 10% | $500 | 9 years |
| 15% | $750 | 5.7 years |
| 20% | $1,000 | 4 years |
| 30% | $1,500 | 2.3 years |
| 50% | $2,500 | 1 year |
Example Problems
Example 1: Finding your savings rate.
You take home $5,000 per month and put $400 into a 401(k), $300 into savings, and $200 into a brokerage account, so S = $900:
R = 900 / 5,000 x 100 = 18%. That sits between the 15% and 20% benchmarks – solid, with room to nudge upward.
Example 2: Hitting a 20% target.
With the same income and a 20% goal: S = 5,000 x 20 / 100 = $1,000 per month, which is $12,000 per year or about $462 per biweekly paycheck.
Frequently Asked Questions
What counts as savings?
Anything that builds net worth rather than being consumed: emergency fund deposits, 401(k) and IRA contributions (including employer match if you want the fuller picture), brokerage investments, and extra principal on debt beyond the minimum payment. Minimum debt payments and bills are spending, not saving.
What is a good savings rate?
Most planners suggest 15-20% of income as a durable long-term target, and the 50/30/20 budget rule builds 20% in by design. Early retirement (FIRE) followers often push to 40-70%, since at those rates each year of work funds multiple years of future spending. If you are below 10%, raising the rate one percentage point at a time is the sustainable path.
Should I calculate it on gross or net income?
Net (take-home) is the most common and intuitive basis, but either works if you stay consistent. One wrinkle: pre-tax 401(k) contributions never appear in take-home pay, so add them to both the income and savings figures when you want your true rate rather than just your cash-account rate.
