Wisconsin Payroll Tax Registration

Jun 18, 2025

If you are an employer in Wisconsin who has recently hired an employee, you will need to register for payroll tax with the Wisconsin Department of Revenue. This registration process ensures that you are in compliance with state tax laws and are able to properly withhold and remit taxes on behalf of your employees.

How Wisconsin Payroll Registration Works

There are 2 payroll tax setup tasks you may need to complete in Wisconsin to get your new hire on payroll for the first time. You can follow the guide below to help you get registered directly with the Wisconsin agencies or use Mosey to do it.

Wisconsin Unemployment Insurance Setup for LLP, LLC, Corporation

Wisconsin employers must register for an Unemployment Account with the Wisconsin Department of Workforce Development by filling out a Preliminary Report (Form UCT-43-E).

  1. Register for an Unemployment Insurance Account Number

    Visit the Wisconsin Department of Workforce Development website and register to determine your initial unemployment tax liability. Select "Create Logon ID" and complete profile, including filing the Preliminary Report (Form UTC-43-E). You should receive your account number and tax rate instantly after registering online, or in one to two weeks if registering by mail.

  2. Configure Payroll with Your Unemployment Account Number

    Upon receipt, provide your Unemployment Account Number to your payroll provider.

  3. Create an Employer Online Services Account

    Upon receipt of Unemployment Insurance Account Number and Internet Access Number, visit Employer Online Services to register to file quarterly reports and pay tax due.

Wisconsin Withholding Tax Setup for Corporation, LLC, LLP

Wisconsin employers must obtain a Withholding Account Number by filing a new Business Tax Registration (Form BTR-101) with the Wisconsin Department of Revenue.

  1. Register for a Withholding Account Number Online

    Register your business with the Wisconsin Department of Revenue to obtain your Withholding Account Number. You should receive this number in 24 hours after registering online, or three to four days if registering by mail.

  2. Configure Payroll with Your Withholding Account Number

    Upon receipt, provide your assigned Withholding Account Number to your payroll provider.

  3. Create My Tax Account Username

    Once your PIN has arrived via email (one to two business days) or physical mail (seven to 10 business days), visit My Tax Account and select "Create new username" to create a username.

Wisconsin's Payroll Registration Agencies

More from the blog

Learn how to keep your business compliant in all 50 states across payroll, HR, Secretary of State, and tax.

Texas Labor Laws Compliance Guide 2024

Maintaining compliance with Texas labor laws is the cornerstone of your business’s integrity and reputation. Adhering to these laws can be complicated for any organization, but especially those expanding or operating in multiple states. The stakes are high: Non-compliance can lead to costly legal challenges and damage to a company’s standing. Enter Mosey, a revolutionary tool designed specifically for small to mid-sized businesses grappling with multi-state operations. Mosey organizes, simplifies, and streamlines your business compliance obligations.

Kaitlin Edwards | Mar 27, 2024

HR Cost Optimization: 8 Actionable Ways To Reduce Company Costs

Companies are always looking for ways to reduce expenses while maintaining operational efficiency. Human resources (HR) management plays a crucial role in optimizing costs, as employee-related expenses often make up a significant portion of a business’ budget. HR cost optimization isn’t about cutting corners — it’s about making strategic decisions that enhance efficiency, avoid waste, and deliver long-term value. This guide explores actionable strategies for HR cost optimization and how Mosey’s corporate compliance solution can contribute to significant cost savings.

Gabrielle Sinacola | Dec 19, 2024

Ohio Annual Report of Unclaimed Funds: Filing, Fees, and Due Dates

One of your core responsibilities as a business owner is to comply with state regulations, including those regarding unclaimed funds. Unclaimed funds are assets like wages, refunds, or other forms of property that have been abandoned by their rightful owners. Every year, businesses must file an Ohio Annual Report of Unclaimed Funds to ensure that unclaimed property is returned to its rightful owners or remitted to the state for safekeeping.

Kaitlin Edwards | Oct 25, 2024

Ready to get started?

Schedule a free consultation to see how Mosey transforms business compliance.