Overview: When starting a business with employees in Indiana, you must register for State Income Tax Withholding, State Unemployment Insurance (SUI) Tax, and Local Withholding (County Income Tax). Registrations for state withholding and unemployment insurance can be completed through the INBiz portal, while county withholding is managed under the same state Taxpayer ID.

Important! This guide does not constitute legal or tax advice. You can consult a CPA or attorney for official guidance.

Taxes You Must Register For:

State Income Tax Withholding

State Unemployment Insurance (SUI) Tax

Local Withholding (County Income Tax)

Combined State Tax Registration (Withholding + UI)

Tax Agency: Indiana Department of Revenue (DOR)

Tax Type: Income and Local Withholding

Tax Agency: Department of Workforce Development (DWD)

Tax Type: Unemployment Insurance

Registration Steps

Step 1: Register Through INBiz

Go to: https://inbiz.in.gov/start-business/step-two/
Click “Register Now”
If you don’t have an Access Indiana account:
- Enter your email and verify with the code sent
- Set up a password, recovery email, and 2-step verification (optional)
Select your role in the company
Choose “Tax Registration” and select all applicable state services
Click “Take Me to INBiz” to access your dashboard

Step 2: Register for Tax Accounts

Under Online Services, click Register Department of Revenue
Return to dashboard and select Register Department of Workforce Development:
- Click “Guide Me”, review details, and complete DWD registration

Account Formats

Withholding Tax ID Format: 10-digit numeric (e.g., 1234567890)

SUI Account Format: Typically 9 digits (e.g., 123456789)

Update your Buddy Punch account with both your Indiana Taxpayer ID and SUI Account Number.

Department of Workforce Development Account Setup

Registration Steps

Go to: https://uplink.in.gov/ESS/ESSLogon.htm
Click “Register”, then choose “Employer”
Enter your FEIN and select “No” for existing account
Complete the verification process
Set up your username and password

Granting Third-Party Access to Check

To authorize Check Technologies as your Third-Party Administrator (TPA) for UI filings:

Log into: https://uplink.in.gov/ESS/ESSLogon.htm
Go to Maintain Account > User Information
Expand the External Account Authorizations (Agent) section
Click “Add Agent”
- Leave business name blank
- Enter Agent ID: 120389
Click Next, select “Wage Records” under Authorization
Check the acknowledgment box and submit

Local Withholding (County Income Tax)

Tax Agency: Indiana Department of Revenue (DOR)

Key Facts

No separate registration is required

County taxes are tied to your state Taxpayer ID

Employers must withhold local tax for:
- The employee’s county of residence (as of Jan 1), or
- The Indiana county of employment (for out-of-state residents)

Your state income tax ID is also used for county tax reporting