Scenario
How much cash buffer should someone keep before retirement?
Last updated: October 2026
Specific retirement question
This page translates a practical decision: whether to hold a 1-year or 3-year spending buffer outside market volatility. The calculator does not model a separate cash bucket, so this page reasons about buffers on top of its output.
All numbers are example assumptions. This page is educational and does not provide personalized advice.
Inputs used
- Current age 44
- Retirement age 60
- Current savings $720,000
- Monthly contribution $1,800
- Expected return 6.8%
- Inflation 3.0%
- Annual spending $64,000
- Withdrawal rate 3.5%
- Volatility 17%
- Buffer sizes checked 0, 1, 2, and 3 years
Result summary
No buffer: lower early-year flexibility and lower success spread under volatility stress.
One-year buffer: modest lift in survival odds from reduced forced withdrawal pressure.
Three-year buffer: materially higher resilience in the first segment, at the cost of opportunity compounding.
Calculator baseline: projected portfolio about $2.66M at age 60 against a FIRE number of about $1.83M in today's dollars ($64,000 ÷ 3.5%), or about $2.93M in age-60 dollars, with about 58% modeled success at 17% volatility. The buffer effects above are qualitative, not calculator output.
In this scenario, 2–3 years of spendable buffer is often the practical zone when healthcare and income transitions are uncertain.
Tradeoff analysis
- Opportunity vs. stability: keeping cash can reduce market exposure, but it can also reduce long-run growth.
- Sequence protection: buffers matter most if retirement starts near a weak market phase.
- Health shocks: cash reserves avoid selling volatile assets during temporary declines.
Monte Carlo interpretation
A buffer lets withdrawals come from cash during early declines, so the plan depends less on one rough patch at retirement onset.
Still, buffers are not a guarantee. They are one input to better behavioral flexibility.
Sensitivity notes
- Higher inflation increases the value of a short-term buffer.
- Lower withdrawal rate and larger buffer reinforce each other.
- A 2-year buffer covers two full years of withdrawals without selling stocks after a decline.
- If returns are persistently weak, buffer can delay difficult spending cuts.
Common mistakes
- Keeping too little cash and calling volatility risk “temporary.”
- Over-funding buffer and underfunding long-horizon portfolio growth.
- Treating buffer and emergency liquidity as separate from healthcare and tax risk planning.
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