Connecticut bonds are debt securities issued by the State of Connecticut to finance capital projects such as school construction, highways, housing, and clean water infrastructure. Individual investors can buy them through a brokerage firm on the state’s qualified list, usually during a retail priority order period that precedes the main institutional sale. Interest is generally exempt from both federal and Connecticut state income tax, which is the main reason in-state residents hold them.
The state manages a sizeable debt portfolio — $25.4 billion outstanding during fiscal year 2025 — and sells new bonds several times a year under a published forward financing calendar.1State of Connecticut Office of the Treasurer. The Year in Review Recent sales have come to market with strong demand and improving credit ratings, though Connecticut still carries one of the heaviest debt loads in the country on a per-capita basis.
What Connecticut Issues
Not all Connecticut bonds are the same security. The state borrows under several distinct programs, each with its own repayment source.2BuyCTBonds. Bond Programs
- General Obligation (GO) bonds are backed by the full faith and credit of the state. They are the primary borrowing vehicle, funding school construction (roughly half of all GO bonding), state buildings, housing grants, economic development, parks, and open space.
- Special Tax Obligation (STO) bonds are repaid from a dedicated revenue stream in the Special Transportation Fund, including motor fuels taxes, a portion of sales taxes, and motor vehicle fees. STO bonds finance highways, bridges, and mass transit.
- UConn 2000 bonds are general obligations of the University of Connecticut, additionally secured by a state commitment to pay debt service. The program has issuance capacity of up to $4.3 billion over 28 years, with $1.5 billion outstanding as of late 2025.3CT Insider. State Borrowing Bond Commission UConn 2000
- State Revolving Fund (SRF) bonds are revenue bonds leveraged against federal grants to finance clean water and drinking water infrastructure. Some carry a “Green Bond” designation for qualifying environmental projects.
Several quasi-public authorities also issue their own debt, including the Connecticut Housing Finance Authority, the Connecticut Health and Educational Facilities Authority, the Connecticut Green Bank, and the Connecticut Higher Education Supplemental Loan Authority (CHESLA). These revenue bonds are generally not direct obligations of the state, though the state may carry contingent liabilities tied to the special capital reserve funds that back some of them.
How to Buy Connecticut Bonds
You buy Connecticut bonds through a brokerage account at a firm on the state’s qualified list. The state operates a BuyCTBonds website where residents can sign up for email notice of upcoming sales and review preliminary official statements before placing an order.4BuyCTBonds. BuyCTBonds Home
Each sale includes a retail priority order period, typically one or two business days before the institutional pricing date, during which individual investors have first priority to place orders through their broker.5BuyCTBonds. Frequently Asked Questions No sales commission applies to orders placed in the primary market during this window. If you miss the primary offering, Connecticut bonds also trade in the secondary market through brokers, though pricing and availability vary.
Bonds have been issued in $5,000 denominations since 1987 and are fully registered book-entry securities. You will not receive a physical certificate; ownership is recorded electronically through the Depository Trust Company.
The forward financing calendar for the remainder of 2026 includes a $448 million competitive sale of Special Tax Obligation refunding bonds scheduled for June 9, 2026, followed by $800 million in GO bonds and $300 million in taxable GO bonds in September, and $1.2 billion in Special Tax Obligation bonds in November.6State of Connecticut Office of the Treasurer. Forward Financing Calendar All dates and amounts are preliminary and subject to market conditions.
Tax Treatment
Interest on bonds issued by the State of Connecticut or its municipalities is generally exempt from federal income tax under 26 U.S.C. §103 and from Connecticut state income tax.7State of Connecticut Department of Revenue Services. PS 92(3.1) – Interest Income on State and Municipal Obligations This double exemption is the main reason Connecticut residents in higher tax brackets hold them.
A few caveats are worth knowing before you buy:
- Interest from bonds issued by other states is subject to Connecticut income tax, so the double exemption only applies to in-state issuers.
- Some bonds backed by private activity may be subject to the federal Alternative Minimum Tax. Check the official statement.
- Capital gains distributions from bond funds are taxable at both the federal and state level, regardless of the underlying bonds.
Credit Ratings and Market Reception
Connecticut’s General Obligation bonds were rated Aa2 by Moody’s, AA by Fitch, and AA- by S&P Global Ratings as of late 2025.8State of Connecticut Governor’s Office. Governor Lamont and Treasurer Russell Announce Connecticut Receives Credit Rating Increases9BuyCTBonds. S&P Ratings Report The Moody’s and Fitch upgrades, announced in September 2025, represented the seventh and eighth rating increases during the Lamont administration. S&P affirmed its AA- rating with a stable outlook at the same time rather than raising it.10State of Connecticut Office of the Treasurer. Russell Announces Successful General Obligation Bond Sale Following Two Credit Rating Upgrades
Investor appetite has followed. A $1.815 billion GO bond sale in September 2025, timed to follow the two upgrades, generated $1.2 billion in orders during a single-day retail priority period, including $277 million from Connecticut investors. The $300 million taxable tranche was six times oversubscribed, and the tax-exempt bonds drew $3.2 billion in orders from 60 institutional investors. The 20-year tax-exempt bonds carried an all-in interest cost of 3.76 percent and the 10-year taxable bonds priced at 4.29 percent. A $715 million refunding component was expected to produce roughly $42 million in savings over ten years.
Rating agencies have credited the state’s fiscal controls as a major positive factor but continue to flag the overall debt load as a pressure point. S&P noted that combined debt service, pension, and other post-employment benefit costs consumed about 30 percent of fiscal 2024 appropriations, and “all-in” fixed costs including entitlement programs exceeded 50 percent.11BuyCTBonds. S&P Report – Connecticut S&P said it could raise the rating if the state makes sustainable progress reducing its liability burden, and could lower it if that burden grows or the state weakens its financial controls.
Debt Load in Context
Connecticut’s debt burden ranks among the heaviest in the country. Moody’s placed the state first in the nation for net tax-supported debt per capita at $7,988 in fiscal year 2022, compared to $6,973 for second-place Massachusetts and a national median of $1,178.12Connecticut General Assembly. Net Tax-Supported Debt Per Capita A Reason Foundation analysis of 2023 data put Connecticut’s total per capita state debt (including pension and OPEB obligations) at $26,187, the highest in the nation.13Reason Foundation. Government Finance – State Net tax-supported debt also represented 8.7 percent of personal income, the second-highest ratio among all states.14Fidelity Investments. CT-MA Borrowers Guide
Part of the explanation is structural. Connecticut finances projects at the state level that other states push down to local governments, most notably school construction. The state also carries approximately $35 billion in unfunded pension liabilities as of June 2024, with the State Employees Retirement System 55 percent funded and the Teachers’ Retirement System 62 percent funded, plus more than $19 billion in net OPEB liabilities.
The Fiscal Guardrails That Back the Bonds
Investors in Connecticut bonds rely on a set of statutory fiscal controls enacted in 2017 and extended through fiscal year 2033 by emergency legislation in February 2023.15CT Mirror. CT Budget Deal Fiscal Guardrails Extension The package includes a spending cap tied to personal income growth or inflation, a revenue cap limiting appropriations to 98.75 percent of projected revenue, a volatility cap that diverts excess income tax receipts into the Budget Reserve Fund, and limits on how much the state can borrow.
Two debt limits apply. Under Section 3-21 of the Connecticut General Statutes, outstanding bonds payable from General Fund tax receipts plus bonds authorized but not yet issued cannot exceed 1.6 times estimated General Fund tax receipts for the fiscal year.16Justia. Connecticut General Statutes Section 3-21 A separate annual cap limits new GO and credit revenue bond issuance to $2.4 billion starting in fiscal year 2024, adjusted for inflation; the fiscal year 2026 cap is $2.6 billion.17Connecticut General Assembly. Bond Issuance Cap Report UConn 2000 bonds and emergency borrowing are excluded from these caps.
Holding the package together is a bond lock, a covenant written into state bond documents that pledges to investors the state will not weaken these controls under normal circumstances. Changes require either a gubernatorial declaration of emergency paired with a three-fifths supermajority vote in both legislative chambers, or a separate resolution that the legislature may adopt between January and June 2028 to discontinue the pledge beyond that fiscal year.18State of Connecticut Office of Policy and Management. CT Investor Conference – Fiscal Guardrails
The guardrails have produced measurable results. The Budget Reserve Fund grew from roughly $213 million (about 1 percent of the General Fund) in 2017 to $4.327 billion by June 2026, hitting its statutory cap of 18 percent of net General Fund appropriations.19State of Connecticut Office of the State Comptroller. June 2026 Letter of the First Once the reserve reaches its cap, surplus funds are redirected to pay down unfunded pension liabilities. Between 2020 and 2024, year-end surpluses and volatility cap transfers reduced the state’s unfunded pension liability by $8.6 billion, and an additional $1.13 billion was slated for pension debt reduction during the June 2026 fiscal year closeout.
The guardrails’ future is not entirely settled. In 2025, Democratic legislative leaders floated suspending the controls in response to potential federal funding cuts estimated at up to $1 billion, while Republican lawmakers pushed a resolution to embed them in the state constitution.20CT News Junkie. Push to Suspend Fiscal Guardrails Puts Pressure on Lamont Amid Budget Debate For now the controls, and the bond lock pledge, remain in place.
A Note on “Baby Bonds”
Searches for Connecticut bonds sometimes turn up the state’s CT Baby Bonds program. These are not investment securities you can buy. Launched in July 2023, the program automatically invests $3,200 for every child born in Connecticut whose birth is covered by HUSKY, the state’s Medicaid program, with no application required.21State of Connecticut Office of the Treasurer. CT Baby Bonds Overview The funds grow in trust until the beneficiary is between 18 and 30 years old and can be used for buying a home in Connecticut, starting or investing in a Connecticut business, education or job training, or retirement savings. The Baby Bonds Trust was funded with approximately $400 million from a state reserve fund, enough to cover an estimated 12 years of eligible children.22CT Mirror. CT Baby Bonds Wealth Inequality