The information below will guide you through the following:
- Understanding if you should be calculating South Carolina taxes
- Deciding which South Carolina taxes your company should register for
- Understanding what forms OnPay files
- Registering with the South Carolina Tax agencies
- Completing the forms necessary for OnPay to be able to file/pay on your behalf
- Entering necessary information into OnPay
Do you 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, or for any employees that calculate South Carolina withholding taxes regardless of there they live/work. if your business is located outside of South Carolina, but your employees work or live in South Carolina you will likely 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 employees primary work location is in South Carolina, you will likely need to register with this agency.
OnPay will use both the home address for each employee, plus the worksite assigned to each employee to decide which taxes should be calculated. OnPay uses reciprocity agreements between states to help decide where a certain employee's taxes are calculated according to those addresses.
South Carolina Department of Revenue (withholding assistance): 1-(803) 896-1450
- Register for your State Tax ID
South Carolina Department of Labor, Licensing, and Regulation (unemployment insurance assistance): 1-(803) 896-4300
- Register for your account ID and tax rate
- Click here to register your South Carolina business with the South Carolina Department of Revenue and Department of Labor
If you are a new employer in the State of South Carolina, this information can be very useful in helping you get your company set up and registered. Please use the following contact information to speak to the departments about registration. Your company MUST be registered with each department before we can pay taxes on your behalf.
Tax Forms We File
- Form WH-1601: Monthly Withholding Return
- Form WH-1605: Quarterly Withholding Reconciliation
- Form WH-1606: Annual Reconciliation/W-2 transmittal
- South Carolina Quarterly Tax and Wage Report
What information does OnPay need?
This information is required. If OnPay does not receive one or more pieces of the information/steps listed below, we may be unable to file/pay one or more of your tax returns. Please contact us if you have any questions.
South Carolina Withholding
What you need as a South Carolina Employer:
- Federal ID Number (EIN)
- South Carolina State Tax ID: 9-digit number Ex: 00000000-0
Once you provide is with your State Tax ID we can file and pay all of your South Carolina Department of Revenue taxes for you.
South Carolina Unemployment Insurance
What we need from you as a South Carolina Employer:
- Federal ID Number (EIN)
- South Carolina Unemployment ID: 6-digit number Ex: 000000
- South Carolina DEW PIN: This is set up with the Department of Employment and Workforce the first time you file your quarterly report electronically.
- If you have already set up and online account HERE then please provide us with the login credentials.
- You will need to have already registered your business with the South Carolina Department of Employment and Workforce (DEW).
I am an existing South Carolina employer, where do I find the information to provide to OnPay?
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:
- 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.
If you cannot locate this document or account number, please call the South Carolina Department of Revenue at 1-(803) 896-1450 and request the account number.
South Carolina Department of Labor:
- Unemployment Account Number: Existing employers can find the Unemployment Account Number on the following forms:
- Employer Package
- Liability Letter
- Quarterly Contribution and Wages Report (Form UCE-120)
- Unemployment Tax Rate:
- 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.
If you cannot locate one of the documents above, or the account number, please contact the South Carolina Department of Labor and request the account number.
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 %), and any local tax IDs as required.
Once you have the following information, please email it to email@example.com:
- DOR: Letter ID and last payment completed on MyDORway
- Completed South Carolina DOL POA found here.
Please reference each section below to identify any other information or steps required for OnPay to complete tax payments and filings on your behalf. If you are a new employer in the State of South Carolina, the following information can be very useful in helping get your company set up and registered.
Power of Attorney
What we need from you as an South Carolina Employer:
Please CLICK HERE for the South Carolina Power of Attorney forms and information on how to complete the forms. This will allow us to speak on your behalf, file, and make payments with the State of Arizona. Please send the completed Power of Attorney forms to firstname.lastname@example.org
Give us the Info
Once you have received all of this information from both the Department of Revenue and the Department of Labor please forward it on to us at Tax@onpay.com.
**If you have liabilities or employees for more than one state please follow the instructions found in the knowledge base for each state.**