South Carolina Form WH-1612 Transmittal in QuickBooks: What Gets Prefilled

QuickBooks users preparing year-end paper filings in South Carolina routinely encounter Form WH-1612, the state’s transmittal document for W-2s and certain 1099s. The form accompanies paper submissions to the South Carolina Department of Revenue, and QuickBooks handles most of the data population — but gaps remain that filers need to close manually before mailing.

What the WH-1612 Covers

The form serves as a cover sheet for paper-submitted W-2s, W-2cs, W-2Gs, and only those 1099s that have South Carolina tax withheld. If federal rules require electronic filing through the IRS or Social Security Administration, the same forms must be filed electronically for South Carolina as well. Employers who issued 10 or more W-2s to South Carolina employees during the calendar year are required to file electronically. Those with fewer than 10 may choose between electronic filing on the state’s portal or traditional paper forms.

Users who filed electronically through the state’s W-2 Portal do not need to file WH-1612 at all. Likewise, employers who did not issue any W-2s, W-2cs, W-2Gs, or 1099s with state withholding can skip the form entirely.

How QuickBooks Populates the Form

QuickBooks prefills most fields on the WH-1612 automatically, drawing from existing company, payroll, and employee records. In a well-maintained file where all payroll data is current and complete, users typically find that little or no additional entry is needed beyond what QuickBooks already generated.

The South Carolina Withholding Number — a nine-digit identifier — appears on the form based on what is stored in payroll setup. If the number is missing or incorrect, corrections should be made in the payroll item list or payroll setup before generating the form.

Where Manual Entry Is Required

The critical gap users encounter involves 1099 data. QuickBooks tracks and calculates W-2 figures only, so any state tax withheld on 1099s must be entered manually. The form includes a smart worksheet for this purpose: Line A captures 1099 state tax withholding, which is then added to the W-2 withholding total reported in Section A. Line B works the same way for 1099 compensation, adding it to the wages, tips, and other compensation figure.

Users filing W-2cs or W-2Gs also need to manually enter the count of those forms on the designated lines. QuickBooks tracks the number of W-2s automatically but does not count corrected or gambling forms.

The contact information section — name, address, and telephone number for the person the Department of Revenue should reach with questions — must also be filled in manually.

Filing Timing and Mailing Rules

The WH-1612 deadline falls on or before January 31st following the close of the tax year. When that date lands on a weekend or holiday, the filing deadline moves to the next business day.

One mailing detail that catches users off guard: the WH-1612 and its accompanying W-2s, W-2cs, W-2Gs, or 1099s must be mailed separately from Form WH-1606, South Carolina’s annual withholding reconciliation return. Additionally, the transmittal should not be filed until after the attached forms have been issued to recipients.

Practical Takeaway

For QuickBooks users, the WH-1612 is largely a review-and-supplement exercise rather than a from-scratch data entry task. The main items to verify are the withholding number, any 1099 withholding amounts entered on the smart worksheet lines, corrected-form counts, and contact details. Users who need broader help with year-end payroll form preparation can find additional guidance on common reporting workflows. Those running into payroll setup or form-generation issues in QuickBooks Online have separate troubleshooting paths available.

The form itself is straightforward once the manual fields are addressed — but overlooking the 1099 withholding entry or mailing the transmittal together with the WH-1606 are the mistakes most likely to trigger a notice from the state.