Lean FIRE Calculator — United States

Lean FIRE means reaching independence with a modest, intentional spending level — often well below the national average household budget. A smaller number is easier to hit, but it leaves less headroom, so the drawdown test matters more, not less.

Rules & rates

Australia United States

American rules, 2026 tax year

Your situation

Everything in today's dollars.

Current age35

1870

Retirement age

Filing status

Income & spending

Gross annual income

Take-home after tax: $76,855

Annual spending now

Annual spending in retirement

What you have invested

Taxable brokerage

401(k) + IRA

401(k) contribution

Earliest Lean FIRE age

Age 44

That is 9 years from now, around 2035. From that age the portfolio funds your spending all the way to 95, including the years before 401(k) unlocks.

Target portfolio: $1,000,000
Projected at retirement: $943,725
Savings rate: 58%

Save this scenario. Compare plans side by side, track progress, and export the full year-by-year schedule.

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Why you can retire on less than the 3.5% target

The $1,000,000 target is the simple 3.5% rule — a portfolio big enough to live off indefinitely. Your plan reaches $943,725 and still works, because it only has to last to age 95, and it keeps compounding the whole time you are drawing on it. That is a reasonable way to plan, but it leaves less margin for a bad run of markets — worth testing in the drawdown simulator.

Portfolio through to your planning horizon

Shown in today's dollars, so every figure keeps the purchasing power you understand right now.

Brokerage
401(k)
Target to sustain spending

Left at the end: $1,464,604
Money runs out: Never
Year one saving: $53,655

The bridge: 15.5 years before 401(k) unlocks

Retiring at 44 means funding everything from taxable brokerage until age 59½.

Short

Needed for the bridge: $542,500
Accessible at retirement: $540,244
Shortfall: $2,256

This is the constraint that usually bites

Total net worth is not the test — reachable net worth is. Shifting contributions away from 401(k) + ira and towards taxable brokerage trades a little tax efficiency for the flexibility to actually stop working early. The Rule of 55 lets you tap the 401(k) from your final employer penalty-free if you separate from service at 55 or later. A 72(t) SEPP can unlock an IRA earlier still.

What actually moves your date

Each row changes one thing and re-runs the whole projection.

Spend $5k less a year
Cuts both what you need and what you must save towards.
-2 yr
Age 42
Earn 10% more
A raise, with the extra going straight to investments.
-1 yr
Age 43
Cut fees by 0.5%
Switching to a lower-cost fund or platform.
No change
Age 44
Returns 1% lower
A more pessimistic market than the one you assumed.
+1 yr
Age 45
Live 5 years longer
A longer horizon the portfolio has to stretch to cover.
No change
Age 44
Retire on 10% more
A more comfortable retirement budget than you planned for.
No change
Age 44

Where your money goes this year

Based on United States rules for the 2026 tax year.

Gross income: $110,000
401(k) contribution: −$12,000
Income tax: −$12,730
FICA: −$8,415
Take-home pay: $76,855
Spending: −$38,500
Into brokerage: $38,355
Employer match: $3,300
Into 401(k): $15,300

Year by year

Retirement years are shaded.

Age	Year	Spending	Brokerage	401(k)	Total
35	2026	$38,500	$119k	$177k	$296k
36	2027	$38,500	$163k	$201k	$364k
37	2028	$38,500	$209k	$226k	$435k
38	2029	$38,500	$258k	$252k	$510k
39	2030	$38,500	$309k	$279k	$588k
40	2031	$38,500	$363k	$308k	$671k
41	2032	$38,500	$419k	$338k	$757k
42	2033	$38,500	$478k	$370k	$848k
43	2034	$38,500	$540k	$403k	$944k
44	2035	$35,000	$523k	$422k	$946k
45	2036	$35,000	$505k	$442k	$948k
46	2037	$35,000	$487k	$463k	$950k
47	2038	$35,000	$467k	$485k	$952k
48	2039	$35,000	$447k	$508k	$955k
49	2040	$35,000	$426k	$532k	$958k
50	2041	$35,000	$404k	$557k	$961k
51	2042	$35,000	$381k	$583k	$964k
52	2043	$35,000	$357k	$610k	$967k
53	2044	$35,000	$332k	$639k	$971k
54	2045	$35,000	$305k	$669k	$975k
55	2046	$35,000	$278k	$701k	$979k
56	2047	$35,000	$249k	$734k	$983k
57	2048	$35,000	$219k	$768k	$988k
58	2049	$35,000	$188k	$805k	$993k
59	2050	$35,000	$155k	$842k	$998k
60	2051	$35,000	$156k	$847k	$1.00m
61	2052	$35,000	$156k	$853k	$1.01m
62	2053	$35,000	$157k	$858k	$1.02m
63	2054	$35,000	$158k	$864k	$1.02m
64	2055	$35,000	$158k	$870k	$1.03m
65	2056	$35,000	$159k	$876k	$1.04m
66	2057	$35,000	$160k	$883k	$1.04m
67	2058	$35,000	$161k	$890k	$1.05m
68	2059	$35,000	$161k	$897k	$1.06m
69	2060	$35,000	$162k	$904k	$1.07m
70	2061	$35,000	$163k	$912k	$1.08m
71	2062	$35,000	$164k	$920k	$1.08m
72	2063	$35,000	$165k	$929k	$1.09m
73	2064	$35,000	$166k	$937k	$1.10m
74	2065	$35,000	$168k	$947k	$1.11m
75	2066	$35,000	$169k	$956k	$1.13m
76	2067	$35,000	$170k	$967k	$1.14m
77	2068	$35,000	$171k	$977k	$1.15m
78	2069	$35,000	$173k	$988k	$1.16m
79	2070	$35,000	$174k	$1000k	$1.17m
80	2071	$35,000	$176k	$1.01m	$1.19m
81	2072	$35,000	$178k	$1.02m	$1.20m
82	2073	$35,000	$180k	$1.04m	$1.22m
83	2074	$35,000	$182k	$1.05m	$1.23m
84	2075	$35,000	$184k	$1.07m	$1.25m
85	2076	$35,000	$186k	$1.08m	$1.27m
86	2077	$35,000	$188k	$1.10m	$1.29m
87	2078	$35,000	$190k	$1.11m	$1.30m
88	2079	$35,000	$193k	$1.13m	$1.32m
89	2080	$35,000	$195k	$1.15m	$1.35m
90	2081	$35,000	$198k	$1.17m	$1.37m
91	2082	$35,000	$201k	$1.19m	$1.39m
92	2083	$35,000	$204k	$1.21m	$1.41m
93	2084	$35,000	$207k	$1.23m	$1.44m
94	2085	$35,000	$210k	$1.25m	$1.46m

Save this scenario. Compare plans side by side, track progress, and export the full year-by-year schedule.

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How this works

How early could I retire on a lean budget?

The trade-off you are making

Lean FIRE gets you out years earlier, because you are attacking the problem from both ends at once: saving more and needing less. The catch is that a lean budget has little discretionary spending left to cut if markets go against you early.

Why the withdrawal rate defaults lower here

A lean retiree usually has a longer horizon and less flexibility, so this page defaults to a 3.5% withdrawal rate rather than 4%. If your budget already contains genuinely optional spending you could pause in a downturn, a higher rate is more defensible.

Keep going

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