Tax calculator

Massachusetts Self-Employment Tax Calculator (2025)

Last udpated December 19th, 2024
This year you will owe a minimum of
$X,XXX in self-employment taxes.
Want to save money with deductions and stay on top of your self-employed taxes?

Bonsai Tax is built just for self-employed workers.
It helps tens of thousands of people across the country save an average of $5,600 on their taxes.
This is an estimate, and should not be considered tax or financial advice.
What state are you in
What is your tax filling status?
What will your 1099 income be this year?
What will your W2 income be this year?
How much will you spend on business expenses this year?
Get your estimated taxes
This year you will owe a minimum of
$X,XXX in self-employment taxes.
Want to save money with deductions and stay on top of your self-employed taxes?

Bonsai Tax is built just for self-employed workers.
It helps tens of thousands of people across the country save an average of $5,600 on their taxes.
This is an estimate, and should not be considered tax or financial advice.

1. How much is the self employment tax for Massachusetts?

Those who are self employed need to look after some tax obligations that were once handled by their employers. One is the Massachusetts self employment tax, which provides 12.4% to Social Security (social security, old-age, survivors, and disability insurance) and 2.9% to Medicare (hospital insurance), for a total of 15.3%.

2. How much do I owe in self employment tax to the government?

There are two calculations that make up the amount owed in Massachusetts self employment tax. The 12.4% to Social Security is applied to a certain amount of your earnings, which in 2020 has been set at the first $137,000 of your earnings. The 2.9% to Medicare is applied to your combined net earnings. There are differences if you have a married couples business or your spouse works for you.

3. When do I have to pay taxes?

The obligation to pay Massachusetts self employment tax includes quarterly installments, and you could face an estimated tax penalty if you don’t make the quarterly tax payments on:

  • April 15th
  • June 15th
  • September 15th
  • January 15th

You could also receive an underpayment penalty if you pay less money than you owe.

4. What forms do I need to file taxes?

The Massachusetts self employment tax is paid quarterly using Form 1040-ES, Estimated Tax for Individuals. Then file your annual tax return using Schedule SE (Form 1040 or 1040-SR ), Self-Employment Tax to report your Social Security and Medicare taxes.

Track 1099 expenses & keep a peace of mind at tax time

Bonsai Tax is built exclusively for self-employed workers to track expenses, maximize tax write-offs, and estimate quarterly taxes.


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