Payroll Taxes

OTTER 2016 Release 3.1 is available for download!
May 3, 2016
Please read the information below as the processes to download and use OTTER 2016 have changed.
  1. Release 3 - If you have previously downloaded any earlier versions of OTTER 2016, release 1, 2 or 3.0 and have not yet filed your payroll reports or if you are encountering filing errors, please download release 3.1 now.
NOTE:  You must uninstall previous versions of OTTER before you download and install release 3.1. 
The Resource Center provides additional OTTER 2016 help.  The Download OTTER section includes these help files:
  • Un-Install Instructions
  • Installation Instructions
  • Network Installation Instructions
  • Database Migrator Installation Instructions
  • Import Function Instructions
  • Readme File 
2. Installation Instructions (for Non-Network installations) – these specific instructions will assist to download the program on a standalone PC.

3. Network Installation Instructions – these specific instructions will assist to download the program to a network.

4. Database Migrator Instructions – these specific instructions will assist if you have used OTTER in prior years/quarters and would like to transfer your historical data to the new OTTER application database.

5. Import Instructions – these instructions will assist OTTER 2016 users who rely on import functionality.  OTTER 2016 release 3 supports the import of data through the following data formats for all forms (Form 132, Schedule B and Form OQ):
  • EFW2 (previously MMREF)
  • ASCII Delimited
  • Excel
 **ASCII Fixed Width format is not supported by OTTER 2016**
When downloading and installing OTTER 2016 release 3 there are two items to remember:
  1. Since OTTER is an executable file you may receive a warning from your operating system.  If you wish to install and use OTTER you should select the option that continues the download.  This could be “Run” or “Yes” or “Ok.”  You won’t be able to install OTTER if you cancel or stop the download process.  Further instructions can be found below in the Resource Center under Download OTTER.
  2. f you are installing OTTER 2016 release 3.1 to a network, depending on your network settings, you may need to have administrator rights.
We appreciate your patience during this process and apologize for any inconvenience our delays may have caused you. We want to assure you that the Department will work closely with employers to ensure delays do not negatively affect your ability to file your reports on time.



Resource Center

OTTER is a free program that allows you to file your combined payroll tax reports electronically.


OTTER 2016 is now available. Please download and install this version in order to file your 2016 quarterly reports. It must be installed before a 2016 Oregon Quarterly Payroll Tax Report can be prepared and submitted.​​​


  • Operating System
    • Windows 7
    • Windows 8
    • Windows 8.1
    • Windows 10
  • Pentium microprocessor or higher
  • 128MB RAM, but 256MB is preferred
  • 20MB free space on the system hard drive

If the link in your OTTER program doesn't work, you can upload your OTTER report or wage detail through this secured server.

OTTER Secured Server​​​




OTTER Technical Support

Oregon Employment Department
875 Union St. NE 
Salem, OR 97311

Hours of Operation

8:00 AM  - 5:00 PM


Phone: 503-947-1544, Option 6
Fax: 503-947-1487

TTY: 7-1-1
Internet Relay: Sprint Relay Online

*During peak reporting times it may take 24-48 hours for an OTTER/SETRON Support Representative to return your call. Many technical questions can be answered through our Frequently Asked Questions page.