Early Retirement Calculator
Retiring at 55 and starting Social Security at 67 leaves 12 bridge years: covering $50,000 a year, rising with inflation, needs about $511,265 set aside at 55. That assumes a constant 5% return before 0.3% fees, 2.5% inflation and no part-time income. This early retirement calculator funds only that gap; savings for the years after Social Security starts are a separate calculation.
Early retirement calculator
Retiring at 55 and starting Social Security at 67 leaves 12 bridge years. Covering $50,000 a year (rising with inflation) needs $511,265 set aside at 55 — about 10.23 times the first year's withdrawal.
Starting Social Security at 62 would need $313,939. Starting Social Security at 70 would need $619,986.
Total taken from savings: $689,778 nominal; $600,000 in today's dollars. Ending balance at 67: $1 nominal.
Constant-return arithmetic, not a forecast. This fund covers only the bridge; savings for later years are separate. Surplus income stays in the balance, so it can leave more than rounding dollars at the end.
Bridge balance by age
Every gap year appears below in nominal dollars. Ages label year ends: the first row ends at 56; the last ends at 67, before Social Security is included.
| Age at year end | Opening | Growth | Withdrawn from savings | Part-time income | Closing |
|---|---|---|---|---|---|
| 56 | $511,265 | $24,029 | $50,000 | $0 | $485,294 |
| 57 | $485,294 | $22,809 | $51,250 | $0 | $456,853 |
| 58 | $456,853 | $21,472 | $52,531 | $0 | $425,794 |
| 59 | $425,794 | $20,012 | $53,845 | $0 | $391,962 |
| 60 | $391,962 | $18,422 | $55,191 | $0 | $355,194 |
| 61 | $355,194 | $16,694 | $56,570 | $0 | $315,317 |
| 62 | $315,317 | $14,820 | $57,985 | $0 | $272,152 |
| 63 | $272,152 | $12,791 | $59,434 | $0 | $225,509 |
| 64 | $225,509 | $10,599 | $60,920 | $0 | $175,188 |
| 65 | $175,188 | $8,234 | $62,443 | $0 | $120,979 |
| 66 | $120,979 | $5,686 | $64,004 | $0 | $62,661 |
| 67 | $62,661 | $2,945 | $65,604 | $0 | $1 |
Compare early retirement bridge funds
These examples change the timeline, budget or income while keeping the remaining inputs fixed. Each fund is the smallest whole-dollar starting balance that pays every modeled year. A dash means the Social Security start age does not follow retirement, so there is no bridge to calculate.
Bridge fund by early retirement age and Social Security start age
| Retire at | Social Security at 62 | Social Security at 67 | Social Security at 70 |
|---|---|---|---|
| 50 | $511,265 | $688,712 | $786,481 |
| 55 | $313,939 | $511,265 | $619,986 |
| 58 | $185,086 | $395,392 | $511,265 |
| 60 | $94,508 | $313,939 | $434,839 |
| 62 | — | $228,952 | $355,098 |
Bridge fund per $10,000 of yearly spending, by bridge length and return
| Bridge years | 3% return | 5% return | 7% return |
|---|---|---|---|
| 3 | $29,155 | $28,056 | $27,025 |
| 5 | $48,497 | $45,791 | $43,314 |
| 8 | $77,368 | $71,020 | $65,422 |
| 10 | $96,523 | $86,968 | $78,748 |
| 12 | $115,602 | $102,253 | $91,046 |
| 15 | $144,083 | $123,998 | $107,736 |
| 20 | $191,181 | $157,297 | $131,451 |
With no income during the gap, the fund scales in proportion to spending: multiply the row for your bridge length by your yearly spending divided by $10,000. For example, $45,000 a year over 10 years at a 5% return needs about 4.5 × $86,968 = $391,356. Rounding can move a calculator result by a few dollars. Longer bridges are more sensitive to the return assumption because each dollar stays invested longer.
Effect of return and part-time income (retire 55, Social Security at 67, $50,000/yr)
| Return before fees | No part-time income | $20,000/yr for first 3 years | $20,000/yr for all 12 years |
|---|---|---|---|
| 3% | $578,009 | $519,700 | $346,806 |
| 5% | $511,265 | $455,154 | $306,759 |
| 7% | $455,228 | $401,180 | $273,137 |
All three tables show constant-return arithmetic, not a forecast or probability. Part-time income is a scenario input, not assured future earnings. Compare several rows before deciding whether your result depends heavily on one assumption.
Calculated 2026-11-12 with the model described in /methodology (section 1f).
How this calculator works
How to use the early retirement calculator
Enter the age you stop work, a later Social Security start age and your annual gap-year budget before optional income. Add part-time or other income only for the years you want to test, counted from retirement. Set return, inflation and fees, then read the starting fund and every-year balance table. Download the CSV to review the same annual cash flows and assumptions in a spreadsheet.
The result is money needed at retirement, not the amount to save today or an annual contribution target. If retirement is years away, enter the budget you expect in your first retirement year. The tool does not project your current savings forward or automatically increase your budget between now and retirement.
Formulas and timing
Bridge years equal Social Security start age minus retirement age. Growth equals opening savings × (return − fees); income and spending occur at year end. Year 1 uses entered amounts, with inflation from year 2. Today's dollars mean purchasing power at retirement: real year-t withdrawal equals nominal net withdrawal divided by (1 + inflation)^(t − 1).
The shared savings solver finds the minimum whole-dollar fund that pays every year, with no tax or legacy target. For no income, the equivalent formula sums W × (1 + i)^(t − 1) / (1 + g)^t from t = 1 through n, where W is first-year spending, i inflation and g return minus fees. The year ending at the Social Security start age is the final bridge payment.
Income rises with the same inflation rate and stops after the entered number of years. Savings withdrawals cannot be negative; excess income stays in the balance. A zero first-year withdrawal has no meaningful multiple, even if later years need savings. Rounding and income surpluses can leave money at the end.
Social Security start age and the bridge
Social Security retirement benefits can start as early as 62. Full retirement age is 67 for people born in 1960 or later, and delayed retirement credits stop at age 70. (SSA, checked 2026-11-12)
A later start age adds years this bridge must cover when the other inputs stay fixed. It does not tell you which start age to choose: this calculator includes no benefit amounts or payments after the gap. The comparison isolates the upfront funding difference, leaving the later retirement budget for a separate calculation.
Limits of this calculator
This is funding arithmetic only. Taxes, health insurance and account-access rules are not modeled. It does not estimate Social Security benefits, test eligibility, choose investments or calculate a lifetime FIRE number. Nothing in the ending balance establishes that your later retirement is funded.
Returns, fees and inflation repeat each year. Market losses, changing earnings, irregular expenses and monthly payment timing can produce different outcomes. No historical backtest or random simulation is used. A calculated minimum has no separate contingency reserve and gives no probability of covering actual future bills.
Early retirement FAQ
How much do I need to retire early?
For the bridge alone, retiring at 55 with $50,000 of first-year annual spending until Social Security at 67 requires $511,265 under the default assumptions. That does not fund your whole retirement. Estimate the savings needed for the years after Social Security separately, including the spending your benefits will not cover. Use how much do I need to retire for the after-Social-Security years.
How do I bridge the gap until Social Security?
This tool sizes a starting savings fund to pay each gap year. The default 12-year bridge needs $511,265 at 55. Entering $20,000 a year of part-time income for the first three years lowers that to $455,154. Income reduces the amount savings must supply; the calculator does not select investments or income products.
Should I claim Social Security at 62 or wait?
This calculator makes no claiming recommendation. With retirement at 55 and the other defaults unchanged, the bridge needs $313,939 to 62, $511,265 to 67, or $619,986 to 70. The 67 bridge is $197,326 larger than the 62 bridge. Benefits after those ages are not modeled, so these differences cannot decide when to claim.
Does the bridge fund include health insurance or taxes?
No. There is no tax or health insurance calculation, and the tool adds no allowance for either. It funds only the spending you enter. It also does not check account-access rules. Those costs and restrictions need separate review before treating any calculated fund as money available to spend.
What return should I use?
Use assumptions you want to test, without treating any return as promised. The return and part-time income table above shows how 3%, 5% and 7% returns before fees change the same bridge. A lower assumed return needs more starting savings here. Actual yearly returns vary; a constant average does not test losses early in the gap.
Is the bridge money in addition to my retirement savings?
Yes in this model: the bridge is a separate funding need from savings required after Social Security starts. It is sized to reach about $0 at that age, with no legacy target. Avoid counting the same dollars toward both periods. Surplus income can leave a larger ending balance, which the year table shows.
Related tools
Size savings for the years after Social Security with how much do I need to retire, solve spending from a known balance with the retirement spending calculator, or review the model in methodology.