Employers with 25 or more employees in a quarter are required to file their quarterly tax and wage reports electronically. Once you are required to file electronically you must continue to file electronically in the future.
Tax and Wage Reporting System - An online application for employers or their representatives to file UI tax and wage reports.
Electronic Tax Reporting for Employer Service Providers (ESPs) - Instructions to assist Employer Service Providers in filing their client's quarterly contribution report electronically.
If you have incurred unemployment tax liability for a calendar year and wish to pay your Wisconsin UI taxes by January 31 of the following year to receive the full Federal UI tax credit and avoid interest and penalties:
The following links take you to information in the Handbook for Employers, related publications, or related web sites.