Question 1

What is the 4% Safe Withdrawal Rate (SWR) and Trinity Study rule?

Accepted Answer

Based on the landmark Trinity Study, withdrawing 4.0% of your portfolio value in the first year of retirement—and adjusting that dollar amount for inflation each subsequent year—historically provided a 95%+ success rate over a 30-year retirement across US market cycles.

Question 2

How does compound inflation impact my future retirement income needs?

Accepted Answer

Inflation steadily erodes purchasing power over time. For example, living on $75,000/year today will require over $177,000 annually in 35 years at an average 2.5% inflation rate. Calculators must factor in inflation to ensure realistic future income targets.

Question 3

What is Sequence of Returns Risk during decumulation?

Accepted Answer

Sequence of Returns Risk occurs when sharp market drawdowns happen in the first few years of retirement. Liquidating equities while values are down locks in permanent capital losses and depletes the portfolio much faster than experiencing losses later in retirement.

Question 4

How do Social Security benefits reduce the required nest egg size?

Accepted Answer

Social Security provides guaranteed, inflation-indexed lifetime income. Subtracting expected Social Security benefits from your target annual living expenses significantly lowers the net income your personal investment portfolio must generate, reducing the target nest egg requirement.

Question 5

What is the difference between accumulation and decumulation return assumptions?

Accepted Answer

During accumulation (working years), portfolios typically hold higher equity allocations targeting 7–9% annualized returns. During decumulation (retirement), portfolios shift toward bonds and cash equivalents to preserve capital and reduce volatility, resulting in conservative 4–6% expected returns.

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