Key facts
- Coast FIRE allows individuals to stop saving for retirement after building an initial nest egg, relying on compounding for future growth.
- Proponents assume average historical inflation-adjusted annualized returns of 7% and nominal returns of 10%.
- A 3% annual inflation assumption is used, though current inflation is higher and historical peaks have been significantly greater.
- Morningstar Wealth's Dominic Pappalardo warns of 'sequencing of returns' risk if markets decline near retirement.
- Vanguard's Nilay Gandhi advises active monitoring and building a cushion to mitigate risks.
- Continuing to contribute during market downturns can accelerate portfolio growth but contradicts the 'set it and forget it' ethos of Coast FIRE.
The 'Coast FIRE' (Financial Independence, Retire Early) strategy, which encourages aggressive saving in early working years and then relying on compounding to reach retirement goals, is facing scrutiny from financial professionals. While proponents suggest this approach allows for greater financial freedom and lower savings effort later in life, experts caution that the underlying assumptions may be overly optimistic.
Key to the Coast FIRE strategy are assumptions about consistent investment returns and inflation rates. Proponents often cite historical average nominal stock returns of 10% annually, which, combined with a 3% inflation assumption, can project substantial growth over decades. For instance, an investment of $278,000 by age 35 could theoretically grow to $2 million by age 65, assuming a 7% inflation-adjusted return.
However, financial experts like Dominic Pappalardo, chief multi-asset strategist at Morningstar Wealth, point to the risk of 'sequencing of returns.' This occurs when market downturns happen around the time an individual stops contributing to their retirement savings or plans to retire, potentially lowering the average return and jeopardizing the retirement goal. High current stock valuations also suggest that future returns over the next decade might be lower than historical averages.
Inflation is another area of concern. While 3% is a common assumption, recent inflation rates have been higher (3.4% currently, and 9.1% in 2022), which can significantly erode real returns over long periods. Nilay Gandhi, a senior wealth advisor at Vanguard, also highlights the risk of higher-than-expected expenses in retirement, such as healthcare costs or caregiving responsibilities, and the possibility of increased spending desires later in life.
To mitigate these risks, Gandhi suggests actively monitoring the Coast FIRE plan rather than treating it as a 'set it and forget it' strategy. Building an additional financial cushion and maintaining flexibility, such as being willing to work longer or adjust spending plans, are also recommended. Pappalardo notes that contributing during market downturns can accelerate portfolio growth, though this contradicts the core philosophy of Coast FIRE.