2013 Form WT-6 Specifications
OCR
All Forms WT-6 must be OCR encoded per ABA specifications. The scan line contains 27 characters including:
- Depository bank drawer number for withholding tax (3)
- Space (1)
- Wisconsin tax account number (15)
- Check digit (1) for WTN
- Space (1)
- Filing frequency (1)
- 1 = Semi Monthly 1-15 of month
- 2 = Semi Monthly 16 - EOM
- 3 = Monthly
- 4 = Quarterly
- Period ending month (2)
- Period ending year (2)
- Check digit (1) for Filing Frequency Code and Period Covered
Other OCR Requirements
- Use OCR “A” font.
- Place the OCR print (scan line) ½ inch from the bottom of the coupon. The last character in the scan line must be ½ inch from the right hand edge of the coupon.
- Use the scan line for 2012
- See Guidelines for Reproduced and Substitute Tax Forms
2013 Form WT-6 Booklet Scanline Calculation Formula
| Month | Semi Monthly 1-15 |
Semi Monthly 16-EOM |
Monthly | Quarterly |
|---|---|---|---|---|
| January | 101139 | 201137 | 301135 | 403139 |
| February | 102137 | 202135 | 302133 | |
| March | 103135 | 203133 | 303131 | |
| April | 104133 | 204131 | 304139 | 406132 |
| May | 105130 | 205138 | 305136 | |
| June | 106138 | 206136 | 306134 | |
| July | 107136 | 207134 | 307132 | 409136 |
| August | 108134 | 208132 | 308130 | |
| September | 109132 | 209130 | 309138 | |
| October | 110130 | 210138 | 310136 | 412130 |
| November | 111138 | 211136 | 311134 | |
| December | 112136 | 212134 | 312132 | |
| Spare | 199992 | 299990 | 399998 | 499996 |
OCR Check Digit Calculation
- Multiply each digit by a weight pattern of 2, 1, 2, 1, 2.
- If the product is two digits, add the two digits together.
- Add all digits together.
- Take the sum and subtract from the next multiple of ten.
- The result is the check digit.
Example: Filing Frequency 10813
- 1 X 2 = 2
0 X 1 = 0
8 X 2 = 16*
1 X 1 = 1
3 X 2 = 6 - *Since the product of 8 X 2 is two digits, add the two digits : 1 + 6 = 7
- 2 + 0 + 7 + 1 + 6 = 16
- 20 - 16 = 4
- 4 is the check digit for the filing frequency 10813
Ink
- Black ink
Form WT-6 size
- 8 1/2 inch width
- 3 2/3 inch height
Paper
- White, highly opaque, with a flat finish.
- Weight 24 pounds/500 sheets.
- Smoothness between 65 and 200 Sheffield units on both sides when measured with a Sheffield Tester.
Data Requirements
- Wisconsin Tax Account Number (WTN) 15-digit number with check digit.
- Check digit - All Forms WT-6 must contain a check digit after the Wisconsin Tax Account Number (WTN) and in the OCR scan line at the bottom of the Form WT-6.
- Calendar year the form covers
- Federal employer identification number
- Filing frequency
- Period covered by form
- Preparer's name typed, date signed, preparer's title, and preparer's telephone number
- Amount of Wisconsin tax withheld
- Taxpayer's legal name and complete address
- Scanline

Form WT-6 Substitute Approval
The Department of Revenue requires approval of Forms WT-6 that are not issued by the department prior to use. Developers/payroll providers must submit 20 to 30 data-filled test forms clearly marked in red as TEST FORMS to the department for approval.
The test packet should include:
- 5 unique data filled forms for quarterly accounts
- 5 unique data filled forms for monthly accounts
- 5 unique data filled forms for semi monthly accounts for the 1st -15th of the month
- 5 unique data filled forms for semi monthly accounts for the 16th to the end of the month
Mail test forms to:
Tax Operations Bureau
Mail Stop 3-418
P.O. Box 8903
Madison, WI 53708-8903
Include an e-mail address with test packet.
Substitute forms developers will be notified via e-mail when testing is completed, generally within fifteen business days of receipt.
FOR FORMS APPROVAL/SPECIFICATIONS
WISCONSIN DEPARTMENT OF REVENUE
Division of Technology Services
Michael Sutter
Mail Stop 4-163
P.O. Box 8903
Madison, WI 53708-8903
E-Mail Additional Questions
FOR GENERAL WITHHOLDING INFORMATION
WISCONSIN DEPARTMENT OF REVENUE
Mail Stop 5-77
P.O. Box 8949
Madison, WI 53708-8949
Fax: (608) 267-1030
E-Mail Additional Questions
Last updated December 6, 2012