Q: What is one of the biggest tax changes for 2025 — especially for Massachusetts taxpayers?

A: The increase in the SALT (State and Local Tax) deduction cap may be one of the most impactful — particularly in high-tax states like Massachusetts.

Under prior law, the SALT deduction was capped at $10,000, limiting how much taxpayers could deduct for:
• state income taxes, and
• local property taxesBeginning in 2025, that cap has been increased to $40,000 under new tax law.

Here’s how this works in practice:

• SALT deductions apply when you itemize.
You can deduct certain expenses — including state income taxes and property taxes — if your itemized deductions exceed the standard deduction.

• The prior $10,000 cap limited many taxpayers.
In states like Massachusetts, many households already pay well above $10,000 in combined state and local taxes but couldn’t deduct the full amount.

• The new $40,000 cap changes the equation.
With a higher cap, more taxpayers may now find that itemizing results in a larger deduction than taking the standard deduction.

• This can reduce federal taxes — and increase refunds!
A larger deduction lowers taxable income, which can reduce taxes owed and potentially increase your refund.

• There are still limitations.
The higher cap begins to phase out for higher-income households (generally starting around $500,000 of income for married couples filing jointly), which may reduce or eliminate the benefit at higher levels.

Bottom Line:
The increase in the SALT cap could shift many taxpayers — especially in Massachusetts — back toward itemizing deductions. That change alone may lead to lower federal taxes and larger refunds compared to prior years.