Social Security
SS partially taxed
Federal rules still apply
SS partially taxed · retirement income taxed · property 1.54% · sales 6.35%. Plan RMDs, Roth conversions, and estate tax before retiring in Connecticut.
By Sammy S. · Founder · AuthorUpdated for 2026
Taxes some Social Security above AGI thresholds and most other retirement income; also levies an estate tax. Rank #48 on this site's retiree-friendliness score (#1 is most favorable).
Social Security
SS partially taxed
Federal rules still apply
Retirement income
Retirement income taxed
Pensions / IRA / 401(k)
Estate / inheritance
Estate tax
Exempt ~$15M
Retiree rank
#48
Lower score = more friendly
Compare any two states
Social Security, pensions/IRA, estate taxes, and supporting property/sales rates.
SS partially taxed
Full SS exemption below AGI $75,000 single / $100,000 joint; above that, up to 25% of benefits may be taxed.
Federally, up to 85% of Social Security can be taxable based on combined income. State treatment is a separate layer on top of IRS rules.
Retirement income taxed
Most pension and account withdrawals taxed; SS partially taxed above AGI thresholds.
Federal income tax on Social Security and retirement distributions can apply regardless of state rules.
Estate tax
Connecticut does not currently levy a state inheritance tax.
Federal estate tax may still apply above about $15M for 2026, regardless of state rules.
Income-tax savings can be offset by higher housing or consumption taxes. These are statewide benchmarks—not the exact levy on a specific home or shopping basket.
1.54%
Owner-occupied housing benchmark
Connecticut property tax profile →6.35%
State + average local combined rate
Connecticut sales tax profile →Living in Connecticut does not remove federal tax on taxable Social Security, traditional IRA/401(k) withdrawals, capital gains, or a taxable estate above the federal exemption. Connecticut rules sit on top of IRS rules.
Up to 85% of benefits may be taxable based on combined income—same framework in every state.
SS partially taxed
Retirement income taxed
Estate tax
Full SS exemption below AGI $75,000 single / $100,000 joint; above that, up to 25% of benefits may be taxed.
Most pension and account withdrawals taxed; SS partially taxed above AGI thresholds.
Statewide effective property tax is about 1.54%. Check local homestead or senior relief.
Combined average sales tax is about 6.35%. Necessities may be taxed differently.
Estate tax
Conversions can raise Connecticut taxable income and, where relevant, Social Security state-tax thresholds.
#48 on this site’s Social Security, retirement-income, and estate/inheritance score (#1 is most favorable).
A planning label—not a guarantee for every AGI level or filing status.
Statewide benchmarks for cash-flow planning; your locality may differ.
Every local income tax, circuit breaker, homestead credit, or private pension nuance.
Rank #48 · SS partially taxed · Retirement income taxed
Compare Connecticut vs Minnesota →Rank #48 · SS partially taxed · Retirement income taxed
Compare Connecticut vs Rhode Island →Rank #48 · SS partially taxed · Retirement income taxed
Compare Connecticut vs Vermont →Rank #45 · SS partially taxed · Retirement income taxed
Compare Connecticut vs Montana →Confirm current Connecticut return instructions and local rules. Rankings are educational planning aids.