Which tax forms does OnPay file?
Withholding: Form WH-1601: Monthly Withholding Return, Form WH-1605: Quarterly Withholding Reconciliation, and Form WH-1606: Annual Reconciliation/W-2 transmittal
Unemployment: South Carolina Quarterly Tax and Wage Report
What information does OnPay need?
- South Carolina State Tax ID: 9-digit number Ex: 00000000-0
- South Carolina Unemployment ID: 6-digit number Ex: 000000
- South Carolina Unemployment Rate
- South Carolina Letter ID and date of last payment completed on MyDORway
- South Carolina DEW PIN: This is set up with the Department of Employment and Workforce the first time you file your quarterly report electronically.
Where do I enter the information in OnPay?
If you already have your tax information, or if you have obtained it using the steps above, please update the tax information in OnPay:
- Login to OnPay
- Select the Settings menu icon
- Select Payroll Tax
- View/Update your Withholding Tax ID, Withholding Tax Deposit Schedule, Unemployment Tax ID, Unemployment Rate (as a %).
Once you have the following information, please email it to email@example.com:
- DOR: Letter ID and last payment completed on MyDORway
- South Carolina DEW Pin
I am an existing South Carolina employer, where can I find this information?
If you are an employer with a history of payroll in South Carolina you have likely obtained the IDs and online accounts necessary for OnPay to process your tax filings.
South Carolina Department of Revenue: (803)-896-1450
Withholding Tax Account Number: Existing employers can find their Withholding File Number on notices received from the State of South Carolina Department of Revenue.
SC Letter ID: you can find your letter ID on notices received from the State of South Carolina Department of Revenue.
South Carolina Department of Labor: (803)-896-4300
Unemployment Account Number: Existing employers can find the Unemployment Account Number on the Employer Package, Liability Letter, or Quarterly Contribution and Wages Report (Form UCE-120).
Unemployment Tax Rate and South Carolina Admin Contingency Assessment Rates: Both of these rates can be found on the Tax Rate Notice you receive from the SC Department of Labor.
I am a new employer, do I need to register for South Carolina taxes?
- Do you have a business and/or employees residing in the State of South Carolina?
- Have you processed payroll in OnPay and have received warnings stating we are missing tax information?
- Have you received an email from an OnPay Tax Agent requesting certain South Carolina information?
If you answered yes to any of the questions above, you should continue with the registration and setup steps below.
Which South Carolina agencies should I register for?
South Carolina Department of Revenue: You will need to register with this department if you have employees that both live and work in South Carolina. If your business is located outside of South Carolina, but your employees work or live in South Carolina you will need to register with this agency.
South Carolina Department of Labor: You will need to register with this department if you have employees that work in South Carolina. If your business is located out of the state, but some of your employee's primary work location is in South Carolina, you will need to register with this agency.
OnPay uses both the home address for each employee, plus the work site assigned to each employee to decide which taxes should be calculated.
How do I register with the state?
South Carolina Department of Revenue (withholding assistance): (803)-896-1450
South Carolina Department of Labor, Licensing, and Regulation (unemployment insurance assistance): (803)-896-4300
**If you have liabilities or employees for more than one state please follow the instructions found in the knowledge base for each state.**