Nine States Still Tax Social Security—The Retirement Income Grab Investors Can’t Ignore

Nine states quietly siphon off part of every Social Security check—knowing the exact rules can save retirees thousands in 2025.

Most retirees plan on Social Security as a tax-free income floor. The federal rules already claw back up to 85% of benefits once provisional income tops $34,000 for singles or $44,000 for joint filers. What blindsides investors is the second layer: nine state governments slice off their own share before the money hits your checking account.

These state-level bites vary by age and adjusted gross income, turning location into a key variable in after-tax retirement yield. A couple collecting $50,000 in combined benefits could lose up to $2,400 a year if they retire in the wrong ZIP code—an annual drag that compounds to more than $48,000 over a 20-year retirement, assuming a 5% portfolio return.

The 2025 Map: Who Taxes Your Benefits

• Colorado: Full exemption at 65+; ages 55-64 can shield up to $20,000 if AGI stays under $75,000 single/$95,000 joint. Colorado Department of Revenue
• Connecticut: Complete exemption if AGI ≤ $75,000 single/$100,000 joint; above that, max 25% of benefits taxed. Connecticut General Assembly
• Minnesota: Sliding-scale exemption ends at $108,320 joint/$84,490 single; anything above is fully taxable at the state level. Minnesota House Research
• Montana: Full deduction below $25,000 single/$32,000 joint AGI; partial above.
• New Mexico: Zero tax under $100,000 single/$150,000 joint; no special treatment beyond those cliffs.
• Rhode Island: 100% exemption up to $104,200 single/$130,250 joint; phase-out above.
• Vermont: Exemption capped at $50,000 single/$65,000 joint; higher incomes lose the shield entirely.
• West Virginia: 65% subtraction for 2025 if AGI exceeds $50,000 single/$100,000 joint; full repeal arrives in 2026.

Utah also applies a broad-based tax but offers a generous retirement-income credit that typically erases liability for middle-income seniors—making it a de-facto ninth state in some analyses.

How the Math Hits Your Portfolio

State taxation is applied after the federal inclusion calculation. That means a dollar of benefits can face:

1. Federal income tax up to 85%
2. State income tax up to 8.75% (Minnesota’s top bracket)
3. Local surtaxes in cities like New York or St. Paul

A Minnesota retiree in the 22% federal bracket plus 8.75% state bracket can watch a $3,000 monthly benefit shrink by roughly $740 after all taxes—an effective 24.7% haircut.

Planning Moves That Actually Work

• Front-load Roth conversions before benefits begin. Roth withdrawals never count toward provisional income, holding both federal and state inclusion at bay.
• Relocate the tax domicile five years before claiming. States such as Florida, Texas and Washington not only skip Social Security tax but also lack a state income tax altogether.
• Harvest HSA qualified medical receipts after age 65. Those distributions offset cash needs without lifting AGI, preserving state exemption thresholds.
• Use QCDs (qualified charitable distributions) at 70½. Money sent directly from an IRA to charity satisfies RMD rules but never flows into AGI, shielding more Social Security from state tax.

Legislative Momentum

West Virginia’s scheduled full repeal next year follows Nebraska and Missouri, which eliminated their Social Security levies in 2024. Lawmakers in Connecticut and Rhode Island have introduced bipartisan bills to raise or eliminate income caps, arguing that retirees bolt for warmer, lower-tax climates and take consumption dollars with them. Analysts at Colorado’s Department of Revenue estimate that every 10% increase in the senior subtraction threshold costs the state roughly $18 million in revenue but increases net migration by 1,200 households—a trade-off many capitals are willing to make.

Bottom line: geographic arbitrage is alive and well. Investors who treat state tax codes as a variable they can control—rather than a fixed cost—keep more of every Social Security dollar and extend portfolio longevity by years.

For faster, definitive analysis that turns breaking tax changes into actionable retirement alpha, bookmark onlytrustedinfo.com and stay ahead of every dollar the states try to claim.