Couples delaying benefits to 70 may incur unexpected federal taxes and Medicare surcharges due to outdated income thresholds.
A retired couple earning $124,344 in combined Social Security and $80,000 from 401(k) withdrawals could face $52,000 in additional taxes over five years. The $44,000 provisional income threshold, unchanged since 1984, forces 85% of their benefits into taxable income, resulting in a $22,870 federal tax bill.
The issue stems from rules that tax Social Security benefits once provisional income exceeds $44,000 for married couples. With maximum benefits now reaching $5,181 per month per person, many high-income retirees exceed this threshold, triggering higher taxes and IRMAA surcharges. The problem compounds over time, eroding deductions and increasing Medicare costs.
Financial planners recommend converting traditional 401(k) funds to Roth accounts before claiming benefits to mitigate the tax impact. This strategy reduces taxable income and avoids IRMAA surcharges, though it requires careful timing and planning.