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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 Idaho agencies when registering for payroll taxes:
Idaho State Tax Commission (STC): Handles income tax withholding.
Idaho Department of Labor (DOL): Handles unemployment tax.
You should receive your withholding account number (Permit Number) and tax deposit schedule in about 10 days if you register online. Keep this time frame in mind when planning your first Idaho payroll.
Go to the Idaho State Tax Commission (STC) website to register online.
Scroll to New Businesses to learn what you'll need to register.
When you're ready, click Idaho Business Registration (IBR) Application.
On the right side of the page, under Begin New Registration, click Create a new account.
Complete the registration.
If you have questions about the application, call the agency at (800) 972-7660.
Most companies become liable for state unemployment insurance tax once the company has:
Paid $1,500 in wages during a calendar quarter, or
Had at least one Idaho employee working for any part of the week for 20 or more different weeks during a calendar year
If you need to run payroll but do not yet meet the above requirements, you can still do so. Enter the new employer rate for Idaho in Gusto for now, and update the rate once you receive it.
Register with the Idaho Department of Labor using Idaho's Business Registration system.
You should receive your account number and unemployment (UI) contribution rate in about 10 days.
If you have questions, contact the agency directly at (208) 332-3576.
Once you complete registration, take these steps:
Give Gusto third-party access (TPA) so we can help manage your taxes with the agency.
Enter your tax account information in Gusto once you add a valid Idaho work address for one or more employees.
If you've already registered in Idaho, 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:
Idaho State Tax Commission (STC): Handles income tax withholding.
Idaho Department of Labor (DOL): Handles unemployment tax.
If you still need to register, see the Register for ID income and unemployment tax on your own section earlier in this article.
Once you add a valid Idaho work address in Gusto for one or more employees, you can enter your state tax account information.
To add your Idaho tax account information:
Go to Taxes & compliance, then select Tax setup.
Find Idaho 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 Account Number, click Edit to enter your Permit Number. This number is usually nine digits long.
Do not include any numbers or letters to the right of the hyphen (either -09 or -W).
Example: If your notice says 000123456-09, enter 000123456.
Make sure to include any leading zeros at the start of the number.
If you have documentation from the STC that shows a 10 or 11-digit number (999999999-09 or 999999999-W), only enter the first nine numbers.
If you have a number with fewer than nine digits, confirm that the agency provided you with the correct withholding account number by calling (800) 972-7660. Once confirmed, add leading zeros to create a nine-digit number.
Example: If the state documentation says 123456, enter 000123456.
Your employer portal
Notices from the Idaho State Tax Commission (for example, Form 910, Withholding Payment Voucher)
If you cannot find your account number, contact the agency at (800) 972-7660.
Next to Unemployment Account Number, click Edit to enter your account number.
Your employer portal
Notices from the Idaho Department of Labor (for example, Notice of Tax Rate)
If you cannot find your account number, contact the agency at (208) 332-3576.
Next to Unemployment Contribution Rate, click Edit to enter your rate.
Note: Do not include the Workforce Development rate component when entering the rate in Gusto.
Your Notice of Tax Rate from the Idaho Department of Labor
Your employer portal
If you cannot find your rate, contact the agency at (208) 332-3576.
If you do not have your assigned rate yet, enter the new employer rate for Idaho in Gusto in the meantime. Update the rate once you receive it.
For Gusto to help troubleshoot tax issues, we need to be authorized with the agencies below:
Idaho State Tax Commission (STC)
Idaho Department of Labor (DOL)
We can only help resolve tax issues on your behalf once you've created an account on the Idaho state TAP website.
Go to the Idaho State Tax Commission TAP website.
Under the login section, click Sign Up.
Enter your registration information and click Submit.
Once the registration is complete, sign in to Gusto.
Go to Taxes & compliance, then select Tax setup.
Find Idaho Tax Setup and select Manage taxes.
Select Yes, I have a TAP account.
Gusto will then request access to your TAP account so we can help resolve tax issues. Idaho will send you an access code you'll need to provide to Gusto.
Email the access code that Idaho sends you to [email protected].
Verify that the following information entered in Gusto matches what's on file with the Idaho State Tax Commission:
Official company name and address
Federal Employer Identification Number (FEIN)
Withholding Tax Account ID
Idaho TAP Access Code (once received)
If you're not sure about any of the details above, call the agency at (208) 334-7660.
To fix tax issues for you, Gusto needs permission from the Idaho Department of Labor (DOL).
You can give access in two ways:
Look for an email from the Idaho DOL.
Click the Approve link.
Go to the Idaho DOL Employer Portal and log in.
Click the Administrator tile to manage your authorized users.
Find Gusto in Authorized Users and click Edit.
Check the box to approve or deny different role types. A button will appear.
Check the box next to Manage UI Tax Filing.
Click Add Selected Roles.
You'll see the role is now approved in your Manage Authorized Users tab.
910* (Withholding Payment Voucher)
967 (Idaho Annual W/H Reconciliation)
TAX020 (Idaho Employer Quarterly UI Tax Report)
State W-2 (Wage and Tax Statement)
ID 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: Idaho State Tax Commission (STC)
Phone: (208) 334-7660
Workforce or Labor Agency: Idaho Department of Labor (DOL)
Phone: (208) 332-3570
Learn how to close or reopen tax accounts.