About the Retirement Bucket Strategy Calculator
The bucket strategy divides a retirement portfolio by when you will need the money. Bucket 1 holds cash for the next year or two of withdrawals, bucket 2 holds bonds and other conservative assets for the medium term, and bucket 3 holds stocks for spending that is ten or more years away. This calculator sizes each bucket from your yearly spending gap — spending minus Social Security, pensions and other income — and shows what share of the portfolio lands in each.
It is built for retirees and near-retirees who want a concrete, rules-based way to stop worrying about selling stocks in a crash. Because the near-term years are already funded from cash and bonds, you can leave the growth bucket alone during a downturn and refill the safer buckets after markets recover.
The calculator also estimates your withdrawal rate, the blended expected return of the three buckets, and how many years the whole portfolio would last if withdrawals rise with inflation each year and the portfolio earns that blended return. Returns are assumptions, not forecasts — try lower numbers to stress-test the plan.
With the default inputs, the bucket 1 – cash (near term) is $80,000.00. Change any value above to recalculate instantly.
How to use the retirement bucket strategy calculator
- 1Enter your total retirement portfolio and yearly spending.
- 2Subtract guaranteed income by entering Social Security, pension or annuity payments.
- 3Choose how many years of withdrawals to keep in cash and in bonds (2 and 8 is a common split).
- 4Set expected returns for each bucket and an inflation rate.
- 5Review the bucket amounts, blended return and how long the portfolio lasts, then adjust.
Formula and method
The yearly withdrawal W is your retirement spending minus guaranteed income. Bucket 1 holds W for each year you want in cash, bucket 2 holds W for each year you want in bonds, and everything left over goes into the growth bucket. If the portfolio is too small, bucket 1 is filled first, then bucket 2, and the growth bucket may be empty.
The blended return is the dollar-weighted average of the three bucket returns. The longevity estimate withdraws W at the start of each year, raises it by inflation every year, and grows the remaining balance at the blended return, counting the full years that can be funded (capped at 60). Bucket sizes use today’s dollars and do not discount future withdrawals.
- W
- Yearly withdrawal needed from the portfolio
- Y1, Y2
- Years of withdrawals held in bucket 1 and bucket 2
- B1, B2, B3
- Dollar amounts in the cash, bond and growth buckets
- ri
- Expected annual return of bucket i
Worked examples
$1M portfolio, $40k yearly gap, 2 + 8 years
Spending $60,000 with $20,000 of other income leaves $40,000 a year to withdraw. Two years in cash is $80,000, eight years in bonds is $320,000 and the remaining $600,000 goes into stocks. The blended return is 5.92%, and with withdrawals rising 2.5% a year the money lasts about 50 years.
$600k portfolio, $36k gap, 3 + 7 years
A $36,000 yearly gap on $600,000 is a 6% withdrawal rate. Three years in cash ($108,000) and seven in bonds ($252,000) leave only $240,000 for growth, pulling the blended return down to 5.32%. The portfolio lasts about 21 years — a sign to cut spending or delay retirement.
Small gap with a big pension
With $30,000 of pension income the portfolio only supplies $20,000 a year, a 2.5% withdrawal rate. After one year in cash and five in bonds, $680,000 stays invested for growth, and at these assumptions the money outlasts the 60-year horizon.
Frequently asked questions
What is the three-bucket retirement strategy?+
It splits savings into a cash bucket for the next one to two years of spending, a bond bucket for roughly years three to ten, and a stock bucket for later years. You spend from cash and refill it from the other buckets over time.
How many years should be in each bucket?+
A common setup is 1–2 years of withdrawals in cash and 5–8 years in bonds, with the rest in stocks. More cash means more peace of mind in a crash but a lower expected return over time.
How do you refill the buckets?+
Most people refill the cash bucket once a year, taking gains from the growth bucket after good years and from the bond bucket after bad ones. Some simply rebalance the whole portfolio back to target percentages each year.
Is the bucket strategy better than a 4% withdrawal rule?+
Not mathematically — it is essentially an asset allocation with a spending rule. Its main benefit is behavioral: knowing several years of spending are safe makes it easier not to sell stocks during a market crash.
Should Social Security be counted in the bucket strategy?+
Yes. Guaranteed income such as Social Security, pensions and annuities reduces what the portfolio has to supply, which shrinks the cash and bond buckets and leaves more invested for growth.
Results are estimates for educational purposes and are not financial advice. Rates, fees and terms vary — confirm with your lender or a licensed advisor before making decisions.