Advisers Warn Coast FIRE Can Misfire on 10% Returns and 3% Inflation
Updated
Updated · Business Insider · Sep 12
Advisers Warn Coast FIRE Can Misfire on 10% Returns and 3% Inflation
2 articles · Updated · Business Insider · Sep 12
Summary
Morningstar and Vanguard advisers say Coast FIRE can break down because it relies on long-run assumptions that may fail just when savers stop contributing or start retiring.
10% annual returns and 3% inflation are central to the strategy, but advisers warn high valuations, market slumps and inflation spikes can erode compounding and purchasing power.
Sequence-of-returns risk is a key concern: a sharp downturn near retirement can cut withdrawals, while stopping contributions early also means missing chances to buy during selloffs.
Higher retirement costs—from healthcare, caregiving or simply wanting to spend more—can further upset plans built decades earlier.
Advisers say Coast FIRE works better as an actively monitored plan, with extra savings cushion and flexibility to work longer, spend less or resume contributions in weak markets.