Why up to 85% of your Social Security could be taxed, and retirees often miss it

Social Security Taxes 2026: Over 67 million Americans receive Social Security benefits, yet many retirees do not know up to 85% of their Social Security income can be taxed in 2026. The IRS uses a formula called combined income to decide the taxable share. If income crosses $34,000 for singles or $44,000 for couples, taxes apply. Rising COLA increases, interest income, and retirement withdrawals are quietly pushing more retirees above these long-frozen IRS thresholds.