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How Long Will My Savings Last Calculator
Find how many years your savings will last with regular monthly withdrawals, an investment return and inflation-adjusted spending.
Quick answer
Your savings last until withdrawals plus the growth you give up use up the balance. With $300,000 earning 5% a year and $2,000 withdrawn each month, rising 2.5% a year for inflation, the money lasts about 15 years and 4 months. Enter your own figures to see the years and months.
Step by step
How to use the How Long Will My Savings Last Calculator
01
Enter your savings balance and monthly withdrawal.
02
Add an expected annual return and yearly increase.
03
See how many years and months the money lasts.
Formula
Each month: Balance × (1 + return ÷ 12) − WithdrawalWorked examples
How long savings last at a 5% return and 2.5% yearly increase
| Savings | $1,500 / month | $2,000 / month | $3,000 / month | $4,000 / month |
|---|---|---|---|---|
| $100,000.00 | 6 y 1 m | 4 y 6 m | 3 y 0 m | 2 y 3 m |
| $250,000.00 | 17 y 5 m | 12 y 4 m | 7 y 10 m | 5 y 9 m |
| $500,000.00 | 49 y 2 m | 30 y 3 m | 17 y 5 m | 12 y 4 m |
| $750,000.00 | 100+ years | 63 y 8 m | 30 y 3 m | 20 y 3 m |
| $1,000,000.00 | 100+ years | 100+ years | 49 y 2 m | 30 y 3 m |
Good to know
The 4% rule of thumb
A common guideline says withdrawing 4% of your savings in the first year, then increasing it with inflation, has historically lasted about 30 years for a balanced portfolio. On $500,000 that is $20,000 a year, or about $1,667 a month. It is a starting point, not a guarantee.
What this calculator assumes
It applies the same return every month and raises the withdrawal once a year. Real markets go up and down, and a bad year early in retirement shortens the result more than an average suggests. Taxes on withdrawals are not included, so use after-tax spending.
FAQ
Frequently asked questions
What return should I use?
Cash savings may earn 3% to 4%; a balanced investment portfolio has historically averaged around 5% to 6% after fees. Lower numbers give safer estimates.
Why does my money last forever?
If the monthly return is larger than the withdrawal, the balance never shrinks; the calculator shows 100+ years.
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