4% Rule

The 4% rule was designed by financial advisor Bill Bengen after analysing historical market data across every 30-year retirement window from 1926 onward. The premise is straightforward: in your first year of retirement, withdraw 4% of your total portfolio value, then increase that monetary amount each year in line with inflation. The rule targets two goals simultaneously - covering living costs throughout retirement and preserving capital long enough to last the full retirement period.\n\nThe rule was built around a 50/50 stock-and-bond portfolio and a 30-year time horizon. It is not a guarantee. Morningstar's 2026 research puts the safe withdrawal rate at 3.9% for a 30-year retirement - and even at that rate, there remains a 10% probability of the portfolio running out of money. The gap between the original 4% figure and the current 3.9% Morningstar estimate may appear small, but over a long retirement the difference in annual income is meaningful and the difference in failure risk is real.\n\nSequence-of-returns risk is a key vulnerability the rule does not fully resolve. If large market losses occur in the early years of retirement - precisely when withdrawals begin - the portfolio recovers more slowly than historical averages suggest, increasing the likelihood of depletion. For this reason, many planners now use dynamic withdrawal strategies or glidepath adjustments rather than applying the 4% figure as a fixed rule.

For expats in the GCC, the 4% rule is a useful starting reference but requires several adjustments. Most Gulf expats do not have access to a state pension in their country of residence. UAE-based employees may accumulate savings through the DEWS (Dirhams for Tomorrow) scheme overseen by MOHRE, while workers covered by GOSI in Saudi Arabia or the Oman Social Protection Fund may have some defined-contribution accumulation - but these balances are typically smaller than a full career's worth of contributions in a home-country system. That gap means the investment portfolio often needs to carry more of the retirement income load, making the withdrawal rate assumption more consequential.\n\nExpats also face currency risk, variable retirement timelines, and potential gaps in home-country pension entitlements caused by years spent working abroad. A 30-year retirement window may not be the right assumption if you are retiring early or if your home-country pension does not start paying until a later age. Tax-treaty implications between your home country and your eventual retirement destination can also affect net withdrawals. For all these reasons, the 4% rule is a starting framework - not a final answer - and should be stress-tested against your specific portfolio, timeline, and income sources.