Affluent retirees deplete 401(k) savings to delay Social Security claims until age 70
By drawing down savings to wait for full delayed retirement credits, high-net-worth individuals secure a 24% boost in monthly benefits and reduce future required minimum distributions.
A growing cohort of affluent couples aged 65 to 70 is adopting a strategy of depleting their 401(k) savings to delay claiming Social Security until age 70. This approach secures a retirement benefit that is 24 per cent larger and inflation-protected for life. The tactic involves drawing approximately 130,000 dollars annually from their accounts to fund living expenses during the five-year bridge, amounting to roughly 650,000 dollars in total withdrawals.
For a married couple each entitled to 3,300 dollars a month at full retirement age of 67, waiting until age 70 lifts the monthly benefit to roughly 4,092 dollars per person. By age 90, this strategy can result in approximately 140,000 dollars more in total Social Security income for the couple compared to claiming early, excluding the survivor benefit advantage. The trade-off is a permanently larger base that continues to grow with cost-of-living adjustments for the remainder of both lives and the survivor's life.
The five-year gap also provides a window to execute Roth conversions while managing modified adjusted gross income below 218,000 dollars for joint filers. Keeping taxable income under this threshold allows retirees to avoid Medicare Income-Related Adjusted Monthly Amount surcharges of 1,000 to 2,000 dollars per spouse. Furthermore, reducing the balance in the traditional account shrinks the future required minimum distribution base, compounding into smaller forced withdrawals in the couple's 70s and 80s.
Current interest rate environments further support this strategy, with 10-year Treasury yields near 4 per cent. With money market and certificate of deposit yields heading lower, the case for parking 401(k) dollars in cash weakens. This makes converting tax-deferred balances while ordinary rates are visible and tax brackets are known a more attractive option for preserving wealth.
The longevity of the couple plays a significant role in the calculation. When one spouse dies, the household keeps the larger of the two benefits. A 24 per cent larger base, growing each year with cost-of-living adjustments tied to inflation measures like Core PCE, can be worth tens of thousands of dollars a year by the late 80s. This effectively acts as longevity insurance funded with 401(k) dollars that would have been surrendered to required minimum distributions anyway.
Retirees are advised to pull primary insurance amounts from SSA.gov to confirm full retirement age and age 70 figures before locking in the strategy. New earnings years or any early retirement can alter these numbers, so modelling 401(k) drawdowns and Roth conversions in a spreadsheet is essential. The goal is to treat the Medicare surcharge cliff as a hard ceiling, ensuring projected income in any conversion year does not clear the first IRMAA tier.
