Does Massachusetts offer a 529 plan tax deduction?

Yes, but it is small. Massachusetts allows a state income tax deduction for contributions to the U.Fund College Investing Plan or the U.Plan Prepaid Tuition Program, capped at $1,000 per year for single filers and $2,000 per year for married couples filing jointly. The deduction reduces taxable income, and Massachusetts taxes income at a flat 5%, so the maximum saving is modest.

What is the Massachusetts 529 deduction cap?

The cap is $1,000 per year for single filers and married couples filing separately, and $2,000 per year for married couples filing jointly. Contributions above the cap are not deductible in the current year and cannot be carried forward in Massachusetts.

How much will the Massachusetts 529 deduction save me?

Because Massachusetts has a flat 5% income tax, the maximum saving is $50 for single filers (5% of $1,000) and $100 for married couples filing jointly (5% of $2,000). The deduction is best viewed as a small bonus on top of the federal tax-free growth a 529 already provides.

Do I have to use the Massachusetts U.Fund plan to get the deduction?

Yes. Only contributions to the state-sponsored U.Fund College Investing Plan or the U.Plan Prepaid Tuition Program qualify for the Massachusetts deduction. Contributions to another state's 529 plan do not earn the Massachusetts deduction, although they still grow tax-free at the federal level.

Is the millionaire surtax relevant to the 529 deduction?

Massachusetts adds a 4% surtax on taxable income over $1 million, on top of the 5% base rate. If your income exceeds that threshold, the deduction could be worth up to 9% on that margin, but for most contributors the relevant rate is the flat 5%. This calculator uses 5% by default and lets you adjust the rate.

Massachusetts 529 Plan Tax Benefit Calculator (U.Fund)

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Massachusetts offers a small but real state income tax deduction for saving in its official 529 programs — the U.Fund College Investing Plan and the U.Plan Prepaid Tuition Program. The deduction is capped at $1,000 for single filers and $2,000 for married couples filing jointly. Because Massachusetts taxes income at a flat 5%, the maximum cash saving is $50 or $100 per year. This calculator does the math and flags any contribution above the cap.

How it works

The deduction lowers your Massachusetts taxable income, so the saving equals the capped deductible times your tax rate:

deductible      = min(contribution, cap)
state tax saving = deductible × rate

The cap is $1,000 for single and married-filing-separately filers and $2,000 for married filing jointly. Massachusetts uses a flat 5% rate, so this tool defaults the rate to 5% (you can raise it to 9% if the 4% millionaire surtax applies to you).

Massachusetts 529 rules

The deduction applies only to the U.Fund or U.Plan — out-of-state 529 plans do not qualify.
The cap is per return, not per beneficiary, so contributing to several children’s accounts does not raise the limit.
There is no carryforward of contributions above the cap.

Worked example

A married couple filing jointly contributes $3,000 to the U.Fund and is taxed at the flat 5% rate:

Deductible = min($3,000, $2,000) = $2,000
Above cap (no benefit) = $1,000
State tax saving = $2,000 × 5% = $100

Note: This estimates the Massachusetts state income tax deduction only. The bigger benefit of any 529 is federal tax-free growth and withdrawals for qualified education expenses. Verify current caps at mass.gov/dor and mefa.org.