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The Daily Insight

How are state and local income taxes calculated?

Author

Ava Robinson

Published Apr 07, 2026

For example, if you already paid $5,000 in taxes by September, multiply $5,000 by 25 percent to get $1,250. Add the estimated amount to the amount you already paid. If you paid $5,000 and estimated that you will pay an additional $1,250, your estimated state and local taxes are $6,250.

Is local income tax included in state income tax?

If you itemize deductions, you can deduct state and local taxes you paid during the year. These taxes can include state and local income taxes or state and local sales taxes, but not both. Included in this total are state and local income taxes, real property taxes, and personal property taxes.

Which states have local income tax?

The following states charge local income tax:

  • Alabama.
  • Arkansas.
  • Colorado.
  • Delaware.
  • Indiana.
  • Iowa.
  • Kentucky.
  • Maryland.

How do I calculate my self employment tax?

Here are the steps to calculating the self-employment tax. Step 1: Calculate net earnings. Step 2: Calculate the amount that equals 92.35% of your net earnings, which is the amount subject to self-employment tax. Step 3: Calculate the Social Security portion of self-employment tax.

Is the self employment tax the same as income tax?

It is similar to the Social Security and Medicare taxes withheld from the pay of most wage earners. In general, anytime the wording “self-employment tax” is used, it only refers to Social Security and Medicare taxes and not any other tax (like income tax).

How is self employment tax calculated for 2020?

Step 1: Calculate net earnings. Step 2: Calculate the amount that equals 92.35% of your net earnings, which is the amount subject to self-employment tax. Step 3: Calculate the Social Security portion of self-employment tax. Only part of your earnings is subject to Social Security, which for 2020 is the first $137,700 of earnings.

What is the Medicare tax rate for self employed?

You each also pay Medicare taxes of 1.45 percent on all your wages – no limit. If you are self-employed, your Social Security tax rate is 12.4 percent and your Medicare tax is 2.9 percent on those same amounts of earnings but you are able to deduct the employer portion.