Tax Information

Let us help you with your taxes!

In person tax preparation is not available at this time. For tax preparation assistance, please email your tax documents via the secure email. The City also offers an online tax tool to calculate your taxes or you can print completed forms and attach the appropriate documentation to send in to the Mason Municipal Center. Tax Year 2020 Due Date is May 17, 2021.

Click here for tax forms for individuals.

Click here for business tax information.

Tax Information - Marycalculate your taxes online and file electronically


Online Tax Tool Button

*Please see note below before clicking

Use our online tax tool to calculate your taxes. Just enter the requested information and the tool will calculate your taxes and fill in a tax form for you. Most full-year residents will then be able to file and pay (if taxes are due) electronically. (Please print a copy for your records.)

If you are not eligible to file electronically, you can print the completed form, sign it and attach the appropriate documentation, and send it in. Please print an extra copy for your records.

let us complete your form

The City of Mason Tax Office staff will be glad to complete your Mason tax return free of charge. Just bring all the necessary W-2’s (copies are acceptable), your Federal Form 1040 (pages 1 & 2, Schedule 1), and any pertinent federal schedules to the customer service counter on the first floor of the municipal center.

Location and contact information

Contact the tax office securely (create or use existing account for free secure messages)

extended hours

Any updates to extended hours will be posted on this website.

Regular hours

make quarterly payments electronically

The online tax tool can also be used to make quarterly tax payments and to see your online payments for the year. Payments made before January 15, 2021 that were not made online are included as well.


Ninety percent of your 2020 taxes are due by January 15, 2021. The deadline for filing 2020 returns is May 17, 2021. For tax year 2021 quarterly tax payments are due May 17, June 15, September 15, and January 15. (The first quarterly payment is made with your previous year’s tax return.)

tax-supported services

Money from Income taxes is used to support many of the services that contribute to the quality of life in Mason. Some of these include:

  • Curbside brush chipping
  • Road construction and maintenance
  • City park land
  • Fall curbside leaf pickup
  • Police protection
  • Snow and ice control
  • City publications
  • Traffic signal maintenance
  • Utility payment office
  • Fish stocking

There are many more benefits to living in the City of Mason than those listed above. Browse through our web site to learn more!

Changes Beginning Tax Year 2016