Retirees Prioritize 401(k) Drawdowns to Maximize Social Security Benefits at 70

Key points

• Claiming Social Security at 64 yields 80% of the full benefit, whereas waiting until 70 secures 124% of the full amount, including cost-of-living adjustments.
• Between ages 64 and 70, couples can utilize the 12% tax bracket for withdrawals and Roth conversions, as they have no wages or Social Security income yet.
• Required minimum distributions begin at age 75, potentially pushing effective marginal tax rates near 40% when combined with Social Security benefits.
• The larger delayed Social Security benefit becomes the survivor benefit for the spouse, providing long-term financial security.
• A Treasury ladder within the 401(k) or IRA can mitigate sequence risk by funding early withdrawals with stable bond yields while stocks recover from market downturns.

Background

Recent analyses indicate that typical couples need approximately $1.16 million to retire comfortably, with Social Security covering about 45% of expenses. Previous coverage highlighted that Roth conversions between ages 62 and 70 can significantly reduce future tax burdens and Medicare surcharges. Additionally, Social Security funding concerns have been noted, with potential shortfalls expected around 2032, making strategic benefit timing even more critical for long-term financial stability.

Why it matters

Optimizing the sequence of retirement income sources can save hundreds of thousands of dollars in taxes and increase lifetime benefits. By prioritizing 401(k) drawdowns during low-tax years and delaying Social Security, retirees can maximize their income potential and protect against inflation and market volatility. This approach also ensures a higher survivor benefit, providing financial security for the surviving spouse.

What to watch

Retirees should review their Social Security statements to compare benefits at ages 67 and 70. They should create a year-by-year withdrawal plan that fills the 12% tax bracket with spending and Roth conversions, while monitoring Medicare surcharge thresholds. Additionally, establishing a Treasury ladder for the first three years of retirement can help manage sequence risk and protect stock investments from market declines.