Who pays for health insurance for the 15 years before Medicare?
At roughly $12,000/yr before ACA subsidies, that is about $180,000 of spending your plan currently excludes (healthcare input is $0).
Budget the pre-Medicare bridge →Safe Withdrawal Rate Calculator
Your safe withdrawal rate decides how big your portfolio must be. The 4% rule means 25× spending; a more conservative 3.5% means about 29×. Compare withdrawal rates below to see the portfolio each one requires for your spending.
Start from a scenario
Your numbers
Essentials
$
$
$
Advanced assumptions
After-tax value assumptions15% on gains
%
Planning estimate, not a tax bracket calculation
%
Applied only to gains above cost basis
$
Contributions already taxed; gains above this may be taxable
Market assumptions7% return · 3% inflation · 4% withdrawal
%
%
%
Healthcare & part-time income (optional)
$
Optional — ACA estimate ~$12,000/yr before subsidies
$
Optional — semi-retirement income per year
Your result
Portfolio you need at 4%
$1,500,000
At a 4% safe withdrawal rate, $60,000/yr of spending means a $1,500,000 portfolio (today's dollars). A lower rate is safer but raises the target:
3.5%
$1,714,286
4%
$1,500,000
4.5%
$1,333,333
At $60,000/yr spending, a 3.5% rate needs about $214,286 more than 4%, while 4.5% needs about $166,667 less. A lower rate is safer but means a bigger portfolio and a later FIRE date.
$60,000/yr spending · 4% withdrawal rate · 7% return · 3% inflation · 20-year runway.
Your path at different withdrawal rates
At your current pace you reach the 4% target around age 76. Each dashed line is the portfolio a different withdrawal rate needs — a lower rate sits higher and takes longer to reach. Shown in today's dollars.
FIRE vs Coast FIRE vs Barista FIRE
Three milestones on the path to financial independence, for your inputs.
Full FIRE
$1,500,000
Today's dollars
Portfolio that funds $60,000/yr at a 4% withdrawal rate — work becomes optional.
Coast FIRE
$700,100
After-tax amount needed today
After-tax amount invested today that grows into your FIRE number by age 50 with no more contributions.
Barista FIRE
Add part-time income
Enter expected semi-retirement income in the calculator to see how part-time work lowers the portfolio you need.
Gross vs spendable (future dollars at age 50): projected gross portfolio is $954,789; estimated after-tax spendable value is $873,070. The FIRE date uses spendable value.
Not sure which path fits you? Read the full comparison: Regular vs Coast vs Barista FIRE.
Assumptions:Return 7% nominalInflation 3%Withdrawal rate 4%Monthly contributions, end-of-monthToday's dollars
Educational estimate only — each chip opens the formula and source behind it. What this model does not know.
Based on your inputs
Saving more is your biggest lever
Of the inputs you control, adding $500/mo to your contributions moves your FIRE date the most — about 6 years earlier, under these assumptions.
See every lever side by side →Portfolio needed by withdrawal rate
For $60,000/yr of spending, here is the portfolio each withdrawal rate requires (today's dollars), compared to the 4% rule.
A lower withdrawal rate means you need a larger portfolio for the same spending. The 4% row matches the FIRE number shown above.
| Withdrawal rate | Portfolio needed | Difference vs 4% |
|---|---|---|
| 3.25% | $1,846,154 | +$346,154 |
| 3.5% | $1,714,286 | +$214,286 |
| 4% | $1,500,000 | Baseline |
| 4.5% | $1,333,333 | -$166,667 |
What changes your FIRE date
Each row tweaks one lever from your plan so you can see which moves the needle most.
| Scenario | FIRE number | Years to FIRE | FIRE age |
|---|---|---|---|
| Your plan | $1,500,000 | 46 yrs | 76 |
| +$500/mo contributions | $1,500,000 | 40 yrs | 70 |
| Spend $10k/yr less | $1,250,000 | 42 yrs | 72 |
| 1% lower return | $1,500,000 | 57 yrs | 87 |
| 3.5% withdrawal rate | $1,714,286 | 50 yrs | 80 |
Based on your inputs
What to check next
Questions your current numbers raise — each with the figure that makes it worth asking. Educational estimates under this page's assumptions, not recommendations.
Is 4% safe for a retirement that could run 40 years?
The 4% rule was tested on 30-year retirements. At a more conservative 3.5%, the spending-only target rises from $1,500,000 to $1,714,286.
Is the 4% rule still safe? →Could part-time income get you there years earlier?
$20,000/yr of part-time income would lower the portfolio you need by about $500,000 at your 4% withdrawal rate.
Model Barista FIRE with your numbers →Lower withdrawal rates are safer, but make FIRE more expensive
A 4% withdrawal rate does not mean your portfolio earns 4%. It means you plan to withdraw 4% of your starting portfolio in year one, then adjust withdrawals for inflation in later years.
A more conservative rate (like 3.25–3.5%) is commonly used for longer retirements and may reduce the risk of running out of money — but it raises the portfolio you need. A higher rate (like 4.5%) lowers the target but leaves less margin if returns are weak early in retirement. Use the table above to compare the portfolio each rate requires for your spending.
Worth101 Research
FIRE trade-offs and retirement realities
Your withdrawal rate decides both the target and the risk. The charts below recalculate from your current inputs.
1) Sequence risk: same average, different order
Two retirements can earn the same 3.9% average real return yet end very differently. Starting from a $1,500,000 portfolio and withdrawing $60,000/yr, weak returns in the early years leave about $1,144,652 after 15 years, while the same weak years late leave about $1,729,769.
Illustrative withdrawal stress test only — it does not change your FIRE number above and excludes taxes, Social Security, and spending adjustments.
▼ Read analysis: why does this happen?▾
Why order matters in retirement: selling assets for income during a downturn locks in losses, leaving fewer shares to recover. The same bad years near the end do far less damage because most withdrawals already happened.
The defence: a more conservative withdrawal rate, a cash buffer, or flexible spending in down years all reduce sequence risk — which is why the 4% rule is a starting point, not a guarantee.
2) Spending flexibility is a second withdrawal rate
At 4%, funding your full $60,000/yr takes $1,500,000. If you could genuinely live on 10% less in bad market years, the spending floor that must be safe needs only $1,350,000 — flexibility is worth about $150,000 of portfolio you don't have to guarantee.
A bracket on the value of flexibility at your 4% rate — not a dynamic guardrails simulation, and not a suggestion that cutting is easy.
▼ Read analysis: why does this happen?▾
Why it matters: most failure scenarios for fixed withdrawal rates involve refusing to adjust during a weak early decade. A household that can flex spending effectively carries a lower "must-not-fail" rate than its headline number.
What this is not: formal guardrails methods (e.g. Guyton-Klinger) adjust withdrawals dynamically by rule and are studied separately — this card only brackets the portfolio difference between your full budget and a reduced floor.
3) Today's dollars vs future dollars
Your FIRE number in today's purchasing power is $1,500,000. Because prices keep rising at an assumed 3% inflation, hitting the same goal 20 years from now takes about $2,709,167 of future dollars — roughly $1,209,167 more on paper for the exact same lifestyle.
The calculator is currently showing today's dollars. Both numbers describe the same plan; only the yardstick changes.
▼ Read analysis: why does this happen?▾
Why two numbers? Inflation erodes what a dollar buys. A target stated in future dollars looks larger, but it funds the identical real spending of $60,000/yr.
How to use it: plan contributions and account growth in future (nominal) dollars, but judge whether the goal is "enough" in today's dollars — that is the version tied to your real lifestyle.
How withdrawal rates change your FIRE number
At a 4% safe withdrawal rate, the perpetual-spending portion of your FIRE number is your annual spending times 25 ($1,500,000). A more conservative rate raises that target; a higher rate lowers it. See the table below for how your number changes across common withdrawal rates.
Coast FIRE is reached earlier: once your invested savings are large enough to compound into your full FIRE number by your target age, you can stop saving for retirement entirely and just cover current expenses.
Barista FIRE sits in between — part-time income (and often employer healthcare) covers part of your spending, so you need a smaller portfolio than full FIRE.
The 4% rule and your FIRE number
Your withdrawal rate is the lever behind the table above — here is the formula and where it comes from.
FIRE number = Annual spending ÷ Safe withdrawal rate
The 4% rule comes from the Trinity Study: historically, withdrawing about 4% of your starting portfolio each year (adjusted for inflation) survived a 30-year retirement in nearly all market scenarios. Dividing by 4% is the same as multiplying spending by 25.
A more conservative 3.5% rate raises the bar (multiplying spending by ~29) and is worth modeling if you retire very early or want extra safety margin. Try it in the sensitivity table.
Where to hold FIRE savings (2026 US limits)
Withdrawal-rate math assumes you can spend what you withdraw — taxes on a Taxable / brokerage account set the gap between gross withdrawals and spendable income.
- Roth IRA — up to $7,500/year ($8,600 if 50+). After-tax in, tax-free growth and qualified withdrawals — ideal for early-retirement flexibility.
- 401(k) — up to $24,500/year ($32,500 if 50+). Pre-tax growth; capture any employer match first. Early withdrawals need a Roth conversion ladder or 72(t).
- Taxable brokerage — no cap and no early-withdrawal penalty, which makes it the bridge that funds the years before 59½. Gains are taxed as you realize them.
These are 2026 contribution limits, not tax advice. The calculator routes your inputs into the account type you choose. Verify current limits in the IRS 2026 announcement.
Healthcare before Medicare
Withdrawal-rate tables usually ignore healthcare. Here it is modeled as a separate finite bridge to 65, not part of the 4% perpetuity. You retire at 50 — 15 years before Medicare — and your healthcare input is currently $0, so this cost is missing from your number.
If you retire before 65 you bridge the gap to Medicare yourself — usually an ACA Marketplace plan, often around $12,000/year before ACA subsidies. Add your estimate in the calculator and it is modeled as a finite bridge ending when Medicare generally begins at age 65. Subsidies are income-based — many early retirees pay far less than the sticker price.
Safe Withdrawal Rate Calculator FAQ
What is a safe withdrawal rate?▼
A safe withdrawal rate (SWR) is the percentage of your starting portfolio you withdraw in year one of retirement, then adjust for inflation each year. The 4% rule comes from the Trinity Study, which found 4% survived a 30-year retirement in nearly all historical periods.
Is 4% still a safe withdrawal rate?▼
For a roughly 30-year retirement 4% remains a common planning baseline. For very early retirement spanning 40–50 years, many planners prefer 3.25%–3.5% to reduce the risk of a poor sequence of early returns draining the portfolio.
How much does the withdrawal rate change my FIRE number?▼
A lot. At 4% you need 25× spending; at 3.5% you need ~29×; at 4.5% about 22×. Dropping from 4% to 3.5% raises a $1,000,000 target to roughly $1,140,000 for the same spending.
What is sequence-of-returns risk?▼
It is the danger of a market drop in your first few retirement years, when withdrawals come out of a shrinking portfolio and lock in losses. A lower withdrawal rate, a cash buffer, or flexible spending all reduce this risk. This calculator is deterministic and does not simulate it.
Should my withdrawal rate stay fixed forever?▼
In practice most retirees adjust. Spending a little less after a bad market year (a “guardrails” approach) lets you start with a slightly higher rate. The fixed-rate math here is a planning estimate, not a rule you must follow rigidly.
How these numbers work: the FIRE number is your annual spending (plus any pre-Medicare healthcare you enter) divided by your safe withdrawal rate, shown in today’s dollars. Projections assume a fixed annual return and inflation rate — deterministic, not a market-volatility simulation, and not financial advice. Read the full methodology, assumptions & sources →
New to compounding? The compound interest calculator shows the growth math behind every FIRE projection.
Sources cited
- IRSIRS — 2026 retirement contribution limitsOfficial 2026 401(k), IRA, Roth IRA, and catch-up contribution limits.
- CMSMedicare.gov — Get started with MedicareOfficial Medicare eligibility and enrollment guidance.
- SSASSA — Delayed retirement creditsOfficial Social Security guidance on delaying retirement benefits.
- BLSBLS Consumer Price IndexUS Bureau of Labor Statistics inflation data.
- IRSIRS Publication 590-B (Roth IRA distributions)IRS guidance on Roth IRA tax treatment and required minimum distributions.