Massachusetts Millionaire Surtax (4%+) Calculator

Calculate Massachusetts additional 4% income surtax on incomes over $1 million (Question 1, effective 2023), combining it with the standard 5% rate for a 9% top rate on high earners.

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$ Finance Disclaimer: These calculators are for educational and illustrative purposes only. Results do not constitute financial advice. Consult a licensed financial advisor before making investment or borrowing decisions.
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How to Use

Enter the values for the scenario you are assessing. Calculate Massachusetts additional 4% income surtax on incomes over $1 million (Question 1, effective 2023), combining it with the standard 5% rate for a 9% top rate on high earners. Use the ma millionaire surtax result to inform your calculation.

Frequently Asked Questions