Connecticut 529 Tax Deduction

Connecticut offers a valuable tax benefit for residents who save for education through the CHET (Connecticut Higher Education Trust) 529 plan.

Contributions to the CHET plan may be deducted from Connecticut state taxable income, helping families and individuals reduce their state tax bill while saving for future education costs.

This deduction, combined with tax-deferred growth and tax-free withdrawals for qualified expenses, makes the CHET 529 plan a powerful college savings tool.

Key Features of the Connecticut 529 Deduction

Annual Deduction Limits

Connecticut allows taxpayers to deduct CHET contributions up to:

• $5,000 per year for single filers
• $10,000 per year for married couples filing jointly

These limits apply per tax year, regardless of the number of beneficiaries.

Five-Year Carryforward of Excess Contributions

If you contribute more than the annual deduction limit in a given year, Connecticut allows you to carry forward the unused portion of the deduction for up to five additional tax years.

Example:
A married couple contributes $20,000 to a CHET account in one year. They may deduct $10,000 in the current year and carry forward the remaining $10,000 to deduct over the next five years.

CHET Plan Requirement

The deduction applies only to contributions made to Connecticut’s official 529 plan, the CHET program.

• Contributions to out-of-state 529 plans generally do not qualify for the Connecticut deduction
• Other states may offer similar benefits for their own residents and plans

How to Claim the Deduction

To claim the CHET deduction, you must:

1. File Form CT-1040 (Connecticut Resident Income Tax Return), and
2. Complete Schedule CT-CHET, which reports your eligible contributions and any carried-forward amounts

Schedule CT-CHET is submitted with your state tax return.

Additional Tax Advantages of the CHET 529 Plan

Beyond the state income tax deduction, the CHET plan offers important long-term tax benefits:

• Tax-deferred growth on investment earnings
• Tax-free withdrawals for qualified higher education expenses at both the federal and Connecticut state levels

Qualified expenses generally include:

• Tuition and fees
• Books and supplies
• Room and board (for eligible students)
• Certain K–12 tuition expenses (subject to federal limits)

Why Electronic Filing Is Recommended

✔ Accurate Deduction Tracking

E-filing software helps calculate your allowable deduction and automatically tracks carryforward amounts year to year.

✔ Fewer Errors and Faster Processing

Electronic filing reduces math errors and speeds up return processing compared to paper filing.

✔ Easier Recordkeeping

Digitally filed returns make it easier to retain proof of contributions and deductions for future reference.

✔ Seamless Schedule Attachment

When you e-file, Schedule CT-CHET is automatically attached to your Form CT-1040, eliminating the risk of missing forms.

Bottom Line

Connecticut’s 529 tax deduction allows residents to lower their state taxable income while investing in education through the CHET program.

With annual deduction limits, a five-year carryforward, and tax-free growth for qualified expenses, the CHET 529 plan offers both immediate tax savings and long-term financial benefits.

To ensure deductions are calculated correctly and carryforwards are preserved, electronic filing is the safest and most efficient way to claim this valuable tax break.