FIRE Number by Age: How Much Should You Have Saved at Every Stage?

Why People Ask "How Much Should I Have Saved by Now?"

There's a certain comfort in comparing yourself to a benchmark. If you're 35 and you've saved $180,000, is that enough? Are you ahead? Behind? The question feels urgent, especially when you start to calculate how far away financial independence actually is.

The honest answer is that age-based benchmarks tell you something, but not what most people think they tell you. The right FIRE number has nothing to do with your age and everything to do with your spending. But benchmarks are still useful as reference points — as long as you understand what they're actually measuring.

The FIRE Math That Drives Every Benchmark

Before any age comparison makes sense, you need the underlying formula.

Your FIRE number is the portfolio size that can sustain your lifestyle indefinitely through investment returns. The standard calculation:

FIRE Number = Annual Expenses × 25

This comes from the 4% safe withdrawal rate — the finding from the Trinity Study that a diversified portfolio can sustain 4% annual withdrawals over at least 30 years in nearly all historical market scenarios. Retire early and you may want a longer runway; many people pursuing early retirement use a 3.5% rate (28x) or 3% rate (33x) instead.

The tables below show benchmarks at different spending levels, not different incomes. That distinction is everything.

FIRE Benchmarks by Age and Annual Spending

The numbers below represent what you'd ideally have saved by each age to reach financial independence by 50 at a 7% real annual return. They assume you started investing at 22. They are benchmarks, not requirements.

At Age 25

You're three years into your career. Compounding hasn't had much time to work. The priority here isn't hitting a specific number — it's building the habits and systems that make everything else possible.

If you have $30,000–$50,000 saved at 25, you're doing well relative to where most people are. Most Americans that age have close to nothing. But these numbers also illustrate why starting early matters: every dollar invested at 25 has a full 25-year runway to compound before you'd target FIRE at 50.

At Age 30

By 30, you should have a clearer picture of your actual expenses and career trajectory. The savings gap between "I started at 22" and "I got serious at 28" is already significant, but absolutely closeable.

These numbers assume 7–8 years of consistent investing. If you're at 25–30% of your FIRE number by 30, you're on pace for financial independence in your late 40s or early 50s without dramatically increasing your savings rate.

At Age 35

The mid-30s are where FIRE plans either solidify or stall. Income is typically rising, but so are expenses — mortgages, kids, lifestyle creep. Keeping your savings rate high through this period is the single most important thing you can do.

If you're at or above these levels at 35 with a high savings rate, FIRE in your mid-40s is plausible. If you're significantly behind, the math still works — it just requires either a longer timeline, higher savings going forward, or a smaller target spending number.

At Age 40

By 40, the compounding math really starts working in your favor. A $400,000 portfolio growing at 7% real will be roughly $1.57 million in 20 years without any additional contributions. What you add between 40 and FIRE compounds meaningfully on top of that.

Hitting $500,000+ at 40 while maintaining a 30–40% savings rate puts you in striking distance of FIRE by 50. Many people hit their number in this decade. Use our FIRE Calculator to model your specific timeline.

At Age 45

At 45, you're inside the window for early retirement. If you're on pace, you may be 5–10 years from FIRE. If you're behind, the tools are different: catch-up contributions become available at 50, income is typically near its peak, and any reduction in expenses now has an outsized effect on both the accumulation and the FIRE number itself.

At Age 50

At 50, you're eligible for catch-up contributions to your 401(k) and IRA. The IRS allows an additional $7,500 per year in 401(k) contributions and an extra $1,000 in IRA contributions beyond standard limits — a meaningful boost if you're in the final stretch.

Why These Numbers Depend on Spending, Not Age

Here's the thing about every benchmark above: they're all derived from an assumed spending level, not an assumed income. Someone who spends $30,000 per year needs $750,000 total. Someone who spends $80,000 per year needs $2,000,000. Their ages are irrelevant to the calculation.

Age matters for two reasons: it determines how long compounding has had to work, and it determines how many more years you have to contribute. But the target is set entirely by your spending.

This is why two people with identical incomes and ages can have wildly different timelines to FIRE. The person spending $35,000 will get there years before the person spending $70,000, regardless of what their salary looks like.

What to Do If You're Behind the Benchmark

First, recognize that most people don't start thinking seriously about this until their 30s or later. Being behind a benchmark at 35 is not a crisis — it's a starting point.

The levers available to you:

Increase your savings rate. This is the highest-leverage action. Each extra percentage point of income saved both builds the portfolio faster and reduces the spending level you need to sustain in retirement. Going from a 15% savings rate to a 25% savings rate can shave years off your timeline.

Reduce your FIRE target. If you're spending $65,000 per year and struggling to save, ask honestly which of those expenses are load-bearing for your quality of life. Reducing annual spending from $65,000 to $55,000 drops your FIRE number by $250,000. That's not an abstract change — it's a meaningful shortcut.

Extend the timeline by a few years. An extra two or three years of working and contributing can make up for a decade of slower accumulation, because you're adding new contributions on top of a large existing portfolio that's already growing rapidly.

Consider Coast FIRE as an intermediate goal. Once you've saved enough that your existing investments will compound to your full FIRE number by traditional retirement age — even without any additional contributions — you've hit your Coast FIRE number. From that point, you only need to cover current expenses. Many people find this milestone achievable years before full FIRE.

The Bigger Problem With Comparing to Averages

Median retirement savings by age in the U.S. are shockingly low — around $35,000 for people in their 30s and $100,000–$120,000 for people approaching 60. If you're comparing yourself to these numbers, you'll likely feel great about your progress while still being decades away from financial independence.

The relevant comparison isn't your peers or the national median. It's your own FIRE number — the amount you need to live the life you want without mandatory work. Everything else is noise.

This article is for educational purposes only and does not constitute financial advice. All projections assume consistent historical market returns, which are not guaranteed. Consult a qualified financial professional for guidance specific to your situation.