Savings Rate Calculator
Your savings rate is the single biggest lever in FIRE planning. See your rate, your FIRE date, and exactly how much time each additional 5% saves you.
💰 Your savings rate
37.5%
$30.0K per year · $2.5K/month
FIRE date
2045
19 years away
💡 Saving 5% more ($333/mo extra) moves your FIRE date 2 years earlier
FIRE Number
$1.00M
$40,000/yr ÷ 4%
Years to FIRE
19 yrs
Retire in 2045
Annual Savings
$30.0K
$2.5K/month
Spending Ratio
63%
Of income spent
Savings rate → Years to FIRE
| Savings Rate | Years to FIRE | FIRE Year | Progress bar |
|---|---|---|---|
| 10% | 35 yrs | 2061 | |
| 15% | 30 yrs | 2056 | |
| 20% | 26 yrs | 2052 | |
| 25% | 23 yrs | 2049 | |
| 30% | 21 yrs | 2047 | |
| 35% | 19 yrs | 2045 | |
| 40% | 18 yrs | 2044 | |
| 45% | 17 yrs | 2043 | |
| 50% | 16 yrs | 2042 | |
| 55% | 15 yrs | 2041 | |
| 60% | 14 yrs | 2040 | |
| 70% | 12 yrs | 2038 | |
| 80% | 11 yrs | 2037 |
Portfolio at 38% savings rate · Today's dollars
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How This Calculator Works
① Your savings rate
Savings rate = (income − spending) ÷ income. It's the only metric that captures both sides: how much you earn and how much you keep. It is the strongest predictor of your FIRE date — more than income alone.
② The rate table
The table shows FIRE years for savings rates from 10% to 80% with your rate highlighted. Small increases compress the timeline dramatically — going from 20% to 30% saves roughly 8 years.
③ Real returns
Inflation is subtracted from the return to keep all values in today's dollars. Your spending targets and savings amounts don't need inflation guesses — everything is expressed in current purchasing power.
Frequently Asked Questions
Why is savings rate so important for FIRE?+
Your savings rate determines both how fast your portfolio grows AND how little it needs to sustain you — because if you spend less, your FIRE number is smaller. A higher savings rate compresses the timeline from both ends. Someone saving 50% of income needs a portfolio 2x their annual spending, while someone saving 10% needs a portfolio 9x their spending.
How do I calculate my personal savings rate?+
Savings rate = (Annual Income − Annual Spending) ÷ Annual Income × 100. Use post-tax income and include 401k / retirement account contributions in your savings, not spending. Many people underestimate their savings rate because they forget tax-advantaged contributions.
What savings rate do I need to retire early?+
As a rough guide: 10% savings rate → ~40 years to FIRE. 25% → ~30 years. 40% → ~22 years. 50% → ~17 years. 60% → ~12 years. 70% → ~9 years. These are approximations at 5% real return starting from zero.
Should I use pre-tax or post-tax income?+
Use post-tax (take-home) income for the most accurate picture. Include contributions to 401k, HSA, and other pre-tax accounts as savings, not as spending — they are still building your net worth.
What counts as savings?+
Anything that builds net worth: contributions to 401k, IRA, HSA, taxable brokerage accounts, extra mortgage principal payments, and cash savings. It does not include spending that happens to be wise, like buying a used car instead of new.
What is a good savings rate?+
For traditional retirement at 65, a 15% savings rate is generally considered adequate. For early retirement (FIRE), 30–50% is the typical target range. Above 50% compresses the timeline dramatically: at 50% savings rate you need roughly 17 years to FIRE from zero. At 60% about 12 years. At 70% about 8–9 years. The right savings rate depends on when you want to retire, not an abstract benchmark.
What savings rate do I need to retire in 10 years?+
To retire in 10 years from zero at 5% real return, you need approximately a 65–70% savings rate. This is achievable but requires high income and/or very low spending. More commonly, people reaching FIRE in 10–12 years have both a high income and a 50–60% savings rate, sometimes boosted by a meaningful starting net worth. Use the calculator above to find your exact required savings rate given your current net worth.
Does 401k count toward savings rate for FIRE?+
Yes — 401k, IRA, HSA, and all retirement account contributions count as savings for FIRE purposes. These are dollars building your net worth, not spending. Include employer match as well. Some FIRE planners track savings rate as (all money that went to net worth) ÷ gross income, which gives a more complete picture than the post-tax version.
How does savings rate determine your retirement date?+
Your savings rate determines two things simultaneously: how fast your portfolio grows, and how little your portfolio needs to support you. Every 1% increase in savings rate accelerates retirement from both directions. At 25% savings rate you need 30 years. At 30% you need 26 years. At 40% you need 22 years. The relationship is non-linear — each additional percentage point saves progressively more time the higher your rate gets.