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Before you can pay employees in a new state, you must register with the state’s tax agencies. This lets you file and pay the right taxes.
🎥 Watch a quick video to learn how registering in a new state works
📚 See our blog for full state business guides
Expand the sections below to learn more. Use CMD + F (or CTRL + F) to search for words in the article.
Gusto works with Middesk to register your business for state tax accounts when you hire employees or start working in a new state. We set up state income tax withholding and state unemployment insurance so we can run payroll and file taxes on your behalf.
We can start your registration after all of these are true:
You added a company work address in the new state.
You assigned that address to a new or existing employee.
You checked your Gusto Home page for a registration to-do.
If required, you registered with preliminary state agencies (like the Secretary of State or Department of Licensing and Regulatory Affairs) first and confirmed it's done.
States that require SOS registration before tax setup: Michigan, Missouri, New Jersey, New Mexico, and Vermont.
Middesk cannot help with registration if your business is:
A non-profit that is not a 501(c)(3)
A business that left a PEO
A business that bought another business that was already registered
A business that changed its legal entity type (for example, LLC to Corp)
A Limited Partnership (LP) or Limited Liability Partnership (LLP)
You must also:
Have a FEIN in Gusto
Not already have a tax account in that state
If you already registered with the state, Middesk will cancel the order and you will not be charged.
Included
Middesk registers your business for:
State income tax withholding
State unemployment insurance (SUI)
Not included
Middesk does not register your business for:
Local tax agency registration
Paid Family and Medical Leave (PFML) registration
Third-Party Agent (TPA) access
Power of Attorney (POA) authorization
Some states require TPA or POA for Gusto to file and pay taxes. In most cases, you must set this up yourself after registration. If you need to register for local taxes or PFML, or set up TPA or POA, use the state-specific article for step-by-step instructions.
The cost, steps, and timeline depend on the state. Before you submit anything in Gusto, we show you:
The price
What is included
How long registration usually takes
You are not charged until the order is marked as completed. The charge appears on your next Gusto monthly invoice.
You can also visit the Middesk Help Center to see estimated processing times for each state.
Here is what to expect when Middesk handles your registration:
You answer questions about your business, including:
Basic company info
Contact details
Addresses
Owner or officer info
State-specific details
Middesk reviews your information.
Middesk usually submits your registration within two business days.
A state agency may contact you to verify the request.
⚠️ Important: If you do not respond to a verification call or email within 3–5 business days, the order may be canceled and refunded.
After your order is marked as complete, we add the charge to your next Gusto monthly invoice.
When Middesk receives your tax account numbers, they enter them in Gusto (for most states and agencies). You will get emails from Gusto and Middesk with updates and next steps.
For most states, Middesk receives agency mail during registration and adds your tax info to Gusto. You can view this mail in a digital mailbox. After registration is complete, the agency updates its mailing address to your business address. If you need to take action, we will notify you by email or Home page to-do.
States that mail tax account info directly to your business: Alabama, Arizona, Delaware, Idaho, Iowa, Kansas, Kentucky, Maryland, Massachusetts, Michigan, Montana, Nevada, New Hampshire, Oklahoma, Rhode Island, Washington, Washington DC, and West Virginia. When you receive the letter, check your email for instructions on how to send the info to Middesk.
You can run payroll before registration finishes. However:
Gusto cannot file or pay taxes until all tax account numbers are added.
You may receive late notices or penalties. These are your responsibility.
For unemployment tax, use your state’s new employer rate until you receive the correct one.
Note: You can cancel orders before they are sent to Middesk. Once an order is submitted to Middesk, it cannot be canceled or refunded.
If you need help with any of the registration questions, check Middesk’s Help Center.
In your web browser:
Go to Taxes & Compliance → Tax setup.
Find [State name] Tax Setup.
Click Learn more under “Let us help you register.”
Review the price, process, and timeline. We do not charge you until after your order is complete.
Click Get started on Middesk.
Review everything carefully before submitting. Mistakes can delay registration.
In the Gusto mobile app:
Open the Gusto mobile app and sign in.
In the bottom-right corner, tap More.
Select Taxes & compliance.
Scroll down to Quick links and choose Setup tax accounts.
Scroll down to [State name] tax setup. Tap Learn more.
Review the process, timeline, and pricing. We do not charge you until after your order is complete.
Tap Get started on Middesk.
Share your business information and review everything carefully before submitting. Mistakes can delay registration.
To check your Middesk registration status in Gusto:
Go to Taxes & Compliance → Tax setup.
Find the state and view the status.
Possible statuses include:
Tax registration in progress
We need more information
The state is working on your order
Your registration is complete
Your order is on hold (often due to state requirements)
You have existing tax accounts
We could not complete your registration
If you entered the wrong eligibility date, email [email protected].
Some states require Gusto to have TPA or POA on file before we can file and pay taxes. Middesk usually does not set this up.
Check the state-specific registration article to see if TPA or POA is required for your state.
If there is no TPA or POA section in the state article, it is not needed right now.
If TPA or POA requires an agency portal:
If Middesk creates the agency account during registration, you will find the login details in Gusto: go to Taxes & Compliance → Tax setup after registration.
If Middesk does not create the account but the state requires portal access, you must create the account yourself.
You can only cancel an order before it is submitted to Middesk. Once submitted, orders cannot be canceled or refunded.
To cancel your order:
Go to Taxes & Compliance, select Tax Setup, and scroll to the applicable state.
In the Finish your [state] registration order banner, select Cancel order.
Q: Do I need a FEIN to use Gusto’s registration service?
A: Yes. You must have a FEIN to register through Gusto. If your business is merging or being acquired, Middesk cannot help with registration.
Q: Why can’t I enter 0% ownership or add a commercial owner?
A: Some states require a minimum ownership percentage or an individual owner. If your situation does not meet state rules, you will need to register outside of Gusto.
Q: What if the responsible party is international without an SSN or ITIN?
A: Middesk cannot help in this case. You will need to register directly with the state.
Q: What if I’m not liable for unemployment tax yet?
A: Use today’s date or the expected liability date. Use the new employer rate until you get your company-specific rate.
Q: I need to change information I already submitted. What do I do?
A: Email [email protected].
Q: What if the tax agency contacts me?
A: Respond right away, within 3–5 business days. Missing a verification call or email can cancel your registration order.
Q: When will my tax account numbers be available?
A: Timelines vary by state. Check Middesk’s guidance for estimates.
Q: Can Middesk close my state tax accounts?
A: No. You must close accounts directly with the state.
Visit the Middesk Help Center for help with registration-specific questions.
Contact Gusto from the ( ? ) in your account for all other payroll or tax setup help.
Expand the sections below to learn how to register with state agencies.
You'll work with the following Wisconsin agencies when registering for payroll taxes:
Wisconsin Department of Revenue (DOR): Handles withholding income tax.
Wisconsin Department of Workforce Development: Handles unemployment tax.
You'll get your Withholding Account Number within 24 hours if you register online, or 3–4 days if you do it by mail. Keep this in mind when planning your first payroll in Wisconsin.
Click the Register with Department of Revenue link.
Use the agency's Withholding Tax Guide if you get stuck during registration. You can also get answers to common questions or live chat with the agency.
Read the Filing Tips section.
Answer yes or no to the question: "Are you registering this business for the first time?"
Finish all other questions.
Important: The company name you use for registration must exactly match the name you entered in Gusto (which should match IRS records). Even small differences in letters or punctuation can cause problems when paying taxes or filing forms.
Most companies in Wisconsin must start paying unemployment insurance tax once they have:
Paid $1,500 in wages during a calendar quarter
Had at least one Wisconsin employee working for any part of the week for 20 or more different weeks during a calendar year
Your business type (general, nonprofit, and similar) can affect when the company is responsible for paying this tax. Contact the agency to confirm when the company will be liable.
If you need to run payroll but do not yet meet the above requirements, enter the new employer rate for Wisconsin in Gusto in the meantime. Update the rate once you receive it.
You'll get your unemployment account number and tax rate instantly if you register online, or in 1–2 weeks if you do it by mail.
Go to the Wisconsin Department of Workforce Development website.
Scroll to the New Users headline. Next to Don't have a username?, click Sign up.
Create a logon by entering some basic information.
Click Next.
Finish all other questions.
If you need help registering, or need to verify your tax account info, call the agency at (608) 261-6700.
New employers in construction or with an annual payroll of $500,000 or more can learn more on the Wisconsin Department of Workforce Development (DWD) website.
Once you complete registration and add a valid Wisconsin work address for one or more employees, enter your tax account information in Gusto.
If you've already registered in Wisconsin, you need to enter your tax account details in Gusto. You need to be registered with one or more of the following agencies for Gusto to file and pay taxes on your behalf:
Wisconsin Department of Revenue (DOR): Handles withholding income tax.
Wisconsin Department of Workforce Development: Handles unemployment tax.
If you still need to register, see the Register for WI income and unemployment tax on your own section earlier in this article.
Once you add a valid Wisconsin work address in Gusto for one or more employees, you can enter your state tax account information.
To add your Wisconsin tax account information:
Go to Taxes & compliance, then select Tax setup.
Find Wisconsin Tax Setup and select Manage taxes.
Follow the instructions below for each tax type.
Important: If you edit a tax account number after payments or filings have been made, there may be tax implications. Learn how to pull reports in Gusto that can help you correct any historical tax issues related to tax account number updates.
Next to Withholding Tax Account Number, click Edit to enter your withholding account number.
The Form WT-6 withholding coupon or welcome letter (labeled "Filing Number") from the Wisconsin Department of Revenue
If you cannot find your account number, contact the agency at (608) 266-2776.
If you cannot find your withholding account number, you can get it online:
Click QuickLinks.
Under "Business Taxes", click Search Account Number/Filing Frequency.
In the first dropdown, select "Withholding Tax".
Under "ID Type", select "Federal Employer ID Number".
In the ID field, enter your Federal Employer Identification Number (FEIN).
Enter your business name.
Enter your zip code of the address you used to register in Wisconsin.
Click Next.
Next to UI Account Number, click Edit to enter your unemployment insurance account number.
Your latest tax rate notice or Quarterly Wage Report (Form UCT-101) from the Wisconsin Department of Workforce Development
If you cannot find your account number, contact the agency at (608) 261-6700.
Next to Unemployment Insurance Tax Rate, click Edit to enter your total unemployment insurance tax rate.
Your most recent tax rate notice from the Wisconsin Department of Workforce Development
If you cannot find your rate, contact the agency at (608) 261-6700.
If you do not have your assigned rate yet, enter the new employer rate for Wisconsin in Gusto in the meantime. Update the rate once you receive it.
If Gusto needs to file a corrected (amended) tax return for you, the Wisconsin Department of Revenue (DOR) requires that Gusto have third-party access to your My Tax Account. Amended returns sometimes need a different filing method than original ones.
If Gusto needs third-party access (TPA), Gusto will start the process by requesting access to your WI Tax Account. You'll need to finish granting access using one of the two options below:
Sign in to My Tax Account.
If you do not have an account, register using this helpful guide from the agency.
From the homepage, select View My Profile.
Click the Manage Usernames tab to see a list of usernames.
Find and select Gusto's TPA username: Gusto, [email protected].
Click Manage Access.
Click Grant Access.
Choose File and Pay (the minimum access needed to file amendments) or All Access.
Enter the time period for which Gusto needs access. Usually, this is the beginning of the quarter that you first ran payroll with Gusto in Wisconsin.
Fill in your company information at the top:
Taxpayer Name: Use your official company name, not your trade name or DBA name.
Social Security Number: Enter your FEIN (not your personal SSN).
Address, City, State, Zip Code: Use your business filing address.
WTN: Enter your Wisconsin Tax Account Number, found in Gusto under Taxes & compliance, then Tax setup, in the Wisconsin Tax Setup section.
Telephone Number: Use your business number.
Email Address: Use your Gusto Primary Administrator's email.
Under Authorizes the following individual(s), enter Gusto's details:
Name: Gusto, Inc. (dba Gusto)
Telephone Number: (415) 907-9391
Address: 1201 16th St Mall, Ste #350 Denver, CO 80202
Sign the form and add your title and date.
Mail the completed form to:
ATTN: Tax Ops - Audit Team Gusto 1201 16th Street, Suite 350 Denver, CO 80202
This form lets Gusto access your Wisconsin My Tax Account and file amendments for you.
WI WT-6* (Wisconsin Tax Deposit Report)
WI WT-7 (Wisconsin Annual W/H Reconciliation)
WI UCT-101 (Wisconsin Quarterly Contribution)
Unemployment tax
WI State W-2 (Wisconsin State W-2)
State W-2 (Wage and Tax Statement)
New Hire Report
You can view forms in Taxes & Compliance, then Tax documents. Switch between the tabs to find federal, state, W-2s, and 1099s.
Some forms show an asterisk (*). Forms like payment vouchers or coupons that were filed electronically may not show in your Gusto account. Sign in to the agency's portal to view filings and payments.
To see what Gusto has paid for you, run the Agency Payments report.
Revenue Agency: Wisconsin Department of Revenue (DOR)
Phone: (608) 266-2776
Workforce or Labor Agency: Wisconsin Department of Workforce Development, Division of Unemployment Insurance (DWD)
Phone: (608) 261-6700
Learn how to close or reopen tax accounts.