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 2024 Idaho Substitute Forms 

      Specifications 

      October 2024 

                     tax.idaho.gov    



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Contents 
  
 Introduction ....................................................................................................................................................................... 2 

 Approval Process for Substitute Forms ............................................................................................................................. 2 

 Authorization of Substitute Forms .................................................................................................................................... 2 
 Helpful Hints ...................................................................................................................................................................... 3 

 Idaho Tax Return Information Grid ............................................................................................................................... 3 
 Specifications Common to All Forms ................................................................................................................................ 5 
 OCR Guidelines ................................................................................................................................................................. 5 
  Name Control Guidelines ................................................................................................................................................. 6 
  Tax Code .......................................................................................................................................................................... 7 
  Transaction Code ............................................................................................................................................................. 7 
  Check Digit Validation .................................................................................................................................................... 7 

 1‐D Barcode ........................................................................................................................................................................ 9 

  Samples of Coupon and Full‐Page Return ...................................................................................................................... 11 
  Relevant 1D Barcode and Scan Line Dimensions for Full Page Return .......................................................................... 12 

 Readable Box Guidelines for Full Page .......................................................................................................................... 13 
 Filing Cycle Table ............................................................................................................................................................ 14 
 
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 Introduction 
 The Idaho State Tax Commission (ISTC) accepts substitute or reproduced tax forms. These forms must meet 
 the requirements of ISTC’s original forms. ISTC has established these guidelines and standards for software 
 partners or any other individual or business that plans to market, distribute, or file substitute or reproduced tax 
 forms. 
  
 Approval Process for Substitute Forms 
 A  company  that  develops  any  substitute  form  must obtain approval  from  ISTC  before  releasing  or 
 distributing  the substitute form to its customers or clients. Any changes to the form by the developer after the 
 original approval must be resubmitted for additional approval. 
  
 Initial and all subsequent Substitute Document test submissions must include the complete set of submissions that 
 have not yet been authorized. We would like a full submission but contact us first if you need to request a partial 
 submission. 
  
 The review process begins with a visual verification of all scan lines, data fields, and barcode validation, to 
 identify layout errors. The final step is completed by processing substitute documents in imaging equipment 
 for optical character recognition (OCR) and system validation. 
  
 Developers receive notification of results within an average of 10 business days. After review, the returns are 
 emailed with an approval or notice of required changes. 
  
 All income tax forms that need approval must be submitted by December 1, 2024, and authorized by January 
 31, 2025. Permits receive approval as required. 
  
 When emailing multiple forms for approval, please separate the submissions between Individual Income Tax 
 Forms and Business Income Tax Forms. In addition, please indicate in the subject line of the email if the 
 attached forms are an initial submission or a resubmission. 
  
 Submission of One Data-Filled Income Tax Scenarios Per Form Type: 
 Submit one sample copy of each form for approval; this sample copy must contain variable data in all possible 
 locations and  positions  on  each  form.   
  
 Submission of Two Data-Filled Voucher Scenarios Per Form Type: 
 When creating voucher substitute documents for submission, use the data in the Voucher Forms Test Pack to 
 populate the data on the form and to create the corresponding scan line for each form. Test packets are located 
 on the State Exchange System (SES) in tax year 2024. 

 Authorization of Substitute Forms 
 The Tax Commission will verify accuracy of line references, data dots, lines, check boxes, and any 
 reference to percentages. The Tax Commission will check the revision dates, header of the returns, form 
 name, year, and barcodes for accuracy. 
  
 Authorization of substitute document will be contingent on: 
  •     Scan lines matching the test-plan scenarios. 
  •     Forms that meet the specifications listed in this document. 
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  Substitute forms will not be accepted by fax. Submit all substitute income tax forms in PDF format to: 
  
                             substituteforms@tax.idaho.gov 
 
  Helpful Hints 
 
   •  Substitute forms must contain all current data elements included on the state-provided form. 
   •  Substitute forms must be proofread prior to submission to the state. 
   •  Do not print EINs, SSNs, or copyright information on the top or bottom of the forms. 
   •  Substitute forms must include your NACTP vendor ID number and the form version date. Place the 
      NACTP vendor ID above the year of the tax form. 
   •  For a comprehensive review of NACTP standards, please visit (http://www.nactp.org/). 
 
   Idaho Tax Return Information Grid 
 
                            Form Basic Characteristics                                   Test Requirements 
                                                                             One Data-                     Not on 
                                                                                          Scan Line 
  Income        Descriptions             Full-page     Voucher               Filled Test                 SES/Available 
                                                                                          Test Pack 
                                                                             Submission                  on Request 
                Individual Income Tax 
   Form 40      Return (and applicable                                                                    
                supplemental schedules) 
                Part-Year Resident and 
   Form 43      Nonresident Income Tax                                                                    
                Return 
                Corporation Income Tax 
   Form 41                                                                                                
                Return 
                S Corp Income Tax 
   Form 41S                                                                                               
                Return 
                Partnership Return of 
   Form 65                                                                                                
                Income 
                Fiduciary Return (and 
   Form 66      applicable supplemental                                                                   
                schedules) 
                Income Tax Voucher 
   ID-VP                                                                                                  
                Payment 
                Income Tax Withheld for 
   ID-PTE-01    Nonresident Individual                                                                    
                Owner of PTE 
                Estimated Payment of ID 
   ID Form 51                                                                                             
                Individual Income Tax 

   ID Form      Estimated Tax Payment 
                                          
   41ES         for Business Income Tax                                                                   

                Estimated Tax Payment 
   ID Form 
                for Affected Business 
   ABE-ES                                                                                                 
                Entity 

   Schedules                                                                                              

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                         Form Basic Characteristics                                      Test Requirements 
                                                                             One Data-                     Not on 
                                                                                         Scan Line 
 Permit      Descriptions               Full-page      Voucher               Filled Test           SES/Available 
                                                                                         Test Pack 
                                                                             Submission            on Request 
             Idaho Sales and Use Tax 
  Form 850                                                                                                
             Return 
             Idaho Withholding 
  Form 910                                                                                                
             Payment Voucher 
             Annual Withholding 
  Form 967                                                                                                
             Report 
             Idaho Travel and 
  Form 1152                                                                                                
             Convention Tax Return 
             Greater Boise Auditorium 
  Form 1250                                                                                                
             Sales Tax Return 
             Tobacco Products Tax 
  Form 1350                                                                                                
             Return 
             Distributer’s Fuel Tax        
  Form 1450                             (Landscape                                                          
             Return  
                                        Orientation) 
  Form 1550  Cigarette Tax Return                                                                          
             Beer Wholesalers and 
  Form 1650                                                                                                
             Breweries Tax Return 
             Distributers, Wholesalers, 
             Wineries, Direct 
  Form 1754* Shippers, and Brewers of                                                                      
             Beer Over 5% Alcohol by 
             Volume Tax Return 
             International Fuel Tax 
  Form 3150  Agreement (IFTA)                                                                              
             Return 
             Amusement Device Tax 
  Form 3550                                                                                                
             Return 
             E911 Prepaid Wireless 
  Form 3950                                                                                                
             Fee Return 
             Idaho Falls Auditorium 
  Form 4150                                                                                                
             Sales Tax Return 
             Pocatello-Chubbuck 
  Form 4250  Auditorium Sales Tax                                                                          
             Return 
 
 Note: All payment vouchers that are a client copy should be designated as such by having a 
 watermark stating, “CLIENT COPY ONLY”. 
 
  *Form 1754 will be revised for 2025.  
 
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   Specifications Common to All Forms 
 
   Margins 
   Margins on substitute returns should be the same as on the official Tax Commission return. 
 
   Shading 
    Some official Tax Commission returns contain shading. Please include shading where shown on the Tax 
    Commission generated returns. 
 
   Form Fonts 
    All substitute returns should be printed in a font that closely resembles the font used on the original return. In the 
    case of scan line reproductions, these must follow the exact font and sizing specifications listed below. 
 
   Data Dots and Line Numbers 
    Data dots and line numbers are essential codes to the Tax Commission’s returns processing system. 
    All substitute tax returns must include these symbols and line numbers. 

   Scannable Returns 
    Tax Commission full-page tax returns are optically read on high-speed scanners. All optically scanned full-page 
    returns have a large box for tax due/refund amounts. All characters  and  numbers  must  be  centered  within 
    each box. 
             
   OCR Guidelines 
    OCR Scan line 
    All vouchers contain an OCR scan line on the lower right of the return. Permit full-page returns contain a scan 
    line on the lower left.  
    The OCR scan line must be OCR-A 12-Pitch (12 characters per inch – fixed print). The Idaho 
    State Tax Commission uses OCR Extended font. It must also contain the following information in 
    the following order: 
                              Seg. 1        Seg. 2        Seg. 3   Seg. 4  Seg. 5  Seg. 6  Seg. 7  Seg. 8 
   Scan Line Segments: 123456789  000000000  NNNN     01  1223     A     95                   0 
                  
 Segment Description         Individual       Business          Permit             Digits                 Format 
                             income tax       income tax 
 1       Taxpayer             SSN             EIN or ID         EIN or SSN             9  EIN: 123456789 
         Identification                       License                                     SSN: 123456789 
                                                                                           
         nd
 2       2  Taxpayer         Spouse SSN       Repeat EIN or ID  ID Permit or           9  EIN: 123456789 
         Identification      (TIN) or 9 zeros Permit or         9 zeros                   SSN: 123456789 
                                              9 zeros                                     Zeros: 000000000 
                                                                                          Permit #: 000001234 
 3       Name Control        See Name         See Name          See Name               4                  NNNN 
                             Control          Control           Control 
                             Guidelines       Guidelines        Guidelines 
 4       Tax Code             01              05                Access link for        2                  ## 
                                                                Tax Code list 

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 Segment Description       Individual              Business           Permit              Digits Format 
                           income tax              income tax 
 5       Tax Period      Month & Year of  Month & Year of  Month & Year of                4      MMYY 
                           Tax Period End         Tax Period End  Tax Period End 
 6       Filing Cycle        A - Annual               A - Annual  Access link for         1                  F 
         Code                                                     Filing Cycle table   
 7       Transaction     See Transaction          See Transaction See Transaction         2                  ## 
         Code            Code Table pg. 7     Code Table pg. 7    Code Table pg. 7 
 8       Check Digit     See Check Digit      See Check Digit     See Check Digit         1                  # 
                             Section                  Section         Section       

    NOTE for Segments 1 & 2: Include leading zeros. Do not include hyphens. 

                  Example: ID Permit # 1234 would be: 000001234 
                  Example: EIN  #  12-3456789 would be: 123456789 
                  Example: SSN  #  123-45-6789 would be: 123456789 

   Name Control Guidelines 

   Individuals: The name control is the first four letters and/or characters of the individual's last name.  
    
   Businesses: The name control is the first four letters and/or characters of the business name. Spaces are placed only at 
   the end of a name control if name is less than three letters and/or characters. Do not include any punctuation apart 
   from the ampersand (&), and the hyphen (-). If the legal business name includes the first word “The”, go to the next 
   word to begin the four-letter name control (example shown below). If the name control is less than four letters, use the 
   following examples to help you. 
 
   Individual Name Control Samples 
 
   O'Murphy The name control would be OMUR (Remove the apostrophe) 
   601883443 000000000 OMUR 01 1220 A 95 8 
 
   Lee The name control would be LEE (Space at the end after the second "E") 
   434872358 000000000 LEE  01 1220 A 95 8 
 
   Business Name Control Samples 
 
   ABC  The name control would be ABC  (Space at the end after the “C”) 
   987654321 000456321 ABC  05 1213 A 95 6 
 
   AB C  The name control would also be ABC  (Remove spaces in the middle and compact the letters. Space 
   is at the end) 
   987654321 000456321 ABC  05 1213 A 95 6 
 
   A+B, Inc:  The name control would be ABIN (Remove the "+" and the comma) 
   987654321 000456321 ABIN 05 1213 A 95 9 
 
   A/B/C  The name control would be ABC       (Remove the “/”s and compact the letters.  Space after “C”) 
   987654321 000456321 ABC  05 1213 A 95 6 
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  A/B/C Company  The name control would be ABCC (Remove the “/”s and compact the letters) 
  987654321 000456321 ABCC 05 1213 A 95 0 
 
  John Doe Inc. (Business): The name control would be JOHN 
  987654321 000456321 JOHN 05 1213 A 95 1 
   
  The ABC Company:  The name control would be ABCC  (Disregard “The” as part of the name control) 
  987654321 000456321 ABCC 05 1213 A 95 0 
 
  Tax Code 
 
    Tax Code                         Type                          Tax Code               Type 
       01                            Individual                    15                     Cigarette 
       05                            Business                      16                     Beer 
       08                            Sales                         17                     Wine 
       09                 Withholding                              31                     IFTA 
       11                 Travel & Convention                      35           Amusement Device 
       12                 Greater Boise Auditorium                 39                     E911 
       13                            Tobacco                       41           Idaho Falls Auditorium 
       14                 Fuel Distributer                         42           Pocatello-Chubbuck Aud. 

  Transaction Code      

    Transaction Code                            Type                            Applicable Forms 
             10                                 Estimated Payment               41ES, 51 
             11                      Affected Business Entity Est. Payment      ABE-ES 
             12                      Pass-Through Entity Withholding            PTE-01 
             50                                 Permit Tax Return               850, 1250, 1350, 1450, 1550, 1650, 
                                                                                3150, 4150, and 4250 
             52                                 Permit Tax Return               1152 
             54                                 Permit Tax Return               1754 
             67                                 Withholding Report              967 
             94                                 Return Payment                  910 (2009 & forward) 
             95                                 Return Payment                  ID-VP 

   Check Digit Validation 

    The calculation for the check digit is Modulus 10 Luhns Sum of Digits. It can be found in the scan line of all 
    OCR scannable tax returns. The check digit is found in position 39 of the scan line. The calculation to validate 
    the check digit is performed on positions 1 through 38 of the scan line.  The spaces separating two fields are 
   not included in the calculations. 
   Numbers 0-9 are equal to their face value. 
 
    Numbers 10 and above are equal to the sum of their two digits. 
    Example: 10 = 1+0 = 1 
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       14 = 1+4 = 5 
       18 = 1+8 = 9 
  
 The letters of the alphabet are valued as follows: 
 
  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O               P  Q  R  S  T  U  V  W  X  Y  Z 
  1  2  3  4  5  6  7  8  9  1  2  3  4             5  6  7  8  9  2  3  4  5  6 7  8  9 
 
 AMPERSAND (&) = 0, DASH ( ) = 0,-AND BLANK SPACES = 0 

 SCANLINE POSITIONS = 123456789012345678901234567890123456789 

 EXAMPLE SCANLINE  =      518010001 123456789 TAXP 05 1208 A 95 4 

 WEIGHTING FACTOR  =  121212121 212121212 1212 12 1212 1 21 C 
 Check digit validation calculations are done as follows: 
 
 5    x 1= 5   
 1    x 2= 2   
 8    x 1= 8   
 0    x 2= 0   
 1    x 1= 1   
 0    x 2= 0   
 0    x 1= 0   
 0    x 2= 0   
 1    x 1= 1   
 0    x 2= 0   
 0    x 1= 0   
 0    x 2= 0   
 0    x 1= 0   
 0    x 2= 0   
 0    x 1= 0   
 0    x 2= 0   
 0    x 1= 0   
 0    x 2= 0   
 3 (T) x 1= 3  
 1 (A) x 2= 2  
 7 (X) x 1= 7  
 7 (P) x 2= 14  1 + 4 = 5 
 0    x 1= 0   
 5    x 2= 10 1 + 0 = 1 
 1    x 1= 1   
 2    x 2= 4   
 0    x 1= 0   
 7    x 2= 14  1 + 4 = 5 
 1 (A) x 1= 1 
 9    x 2= 18 1 + 8 = 9 
 5    x 1= 5 

 TOTAL        60 

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 1. Sum of the digits.  The sum in this example equals 60. 
 2. Divide the sum by 10. 60/10 = 6 with a remainder of 0. 
 3. Subtract the remainder from 10.  10 - 0 = 10. 
 4. The check digit equals 0. 
 
 Note: 
 The "C" used in the example of weighting factor on the previous page designates the location of the check digit. 
 It has no other purpose. 
 
 Note: 
 If the remainder is equal to zero, the check digit is 0. 

 1‐D Barcode 
 The Tax Commission uses an Interleaved 2 of 5 human readable 1-D barcode using 36-point barcode font. 
 The type may range from "Bar 25i b HR" to "Bar 25i f HR". The barcode is in the lower right corner of 
 each page of the scannable full-page return. 

 *Barcode data must contain your specific NACTP vendor code. This data varies by return and return 
 page number. A list of your barcode data may be obtained via email from 
 substituteforms@tax.idaho.gov or by calling Greg Anderson at (208) 334-7793. 

 Examples of two barcode layouts shown in the tables below: 

 6-Character Barcode 
 
    Form                                                    3-Digit Form      2-Digit Vendor Code 
                              1-digit Year                    Number            Number 
       967                         8                          500                    91 
       1350                        0                          400                    91 
       1550                        0                          410                    91 
       3150                        6                          380                    91 

 8-Character Barcode 

                              3-digit                       3-Digit Form      2-Digit Vendor Code 
    Form 
                                Year                          Number            Number 
       1152                     018                           350                    91 
 1450, pg. 1                    022                           340                    91 
 1450, pg. 2                    022                           342                    91 
       1650                     021                           430                    91 
       1754                     021                           540                    91 

 Example of a barcode with good spacing:                                     Example of an unreadable barcode: 
 
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 Samples of Coupon and Full‐Page Return 
 
 Form Dimensions for Voucher 
 
 These specifications are relevant for both income and permit vouchers. 

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 Relevant 1D Barcode and Scan Line Dimensions for Full Page Return left 
   Full-page permit-based tax returns contain an OCR scan line located in the lower corner of the 
   return. 
 
                                   8 ½" 
 
                    11" 
 
               1/4" 
                                                           1/4" 
            1/                               1/4" 
            2" 
               ½”                                          1/2" 
 
                                   Note: not to scale 

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 Readable Box Guidelines for Full Page 
 
   Examples of ‘box’ data: 
 
       •  Amended return 
       •  State Use Only – Use Name Control Guidelines for this box 
       •  SSN or EIN 
       •  Tax Due 
       •  Refund 
       •  Tax Period (box at the end of the tax period ending date) - Enter the tax period ending 
          date in the MMYY format. For example, “06/30/25” would be 0625. 
 NOTE: Developers must fill these in with the appropriate data on a completed return. 
           
 The placement of boxes on substitute scannable returns must be placed and measured exactly as 
 shown on the original return. In order to achieve a successful read in these fields, here are some guidelines when 
 creating these boxes: 
 
 Numbers in the boxes and the amended indicator must be centered. Do not left or right justify. The fields 
 containing data should be larger than the other fields. Smaller fields are more difficult to scan and read. For 
 example, the Amended Return box below is too small to be scanned. In the scenario below, the Amended Return 
 box should be at least twice the size shown. 
 
 Generally, the OCR data should fit comfortably within the lines of the box. Below is an example of a box that’s 
 too small in relation to the font size: 
 
 When typing information into OCR fields, avoid inserting data near the borders of the field. The following data 
 is typed too close to the bottom border: 
 
 Another common error is using a negative sign or parentheses to represent a refund within the OCR Refund 
 Field. A positive number is what is expected, and the extra  characters  are misread by our scanner. For 
 example, the opening parenthesis in the following example is read as a numerical value of “1”. 
 
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  Filing Cycle Table 
 
                    A -  B - Semimonthly  M - Monthly  Q - Quarterly  S - Semiannual  Y - Yearly 
               Annual 
  Form ID-VP                                                                         
  Form 41ES                                                                          
  Form 51                                                                            

  Form 850                                                                          
  Form 910                                                                          
  Form 967                                                                          
  Form 1152                                                                         
  Form 1250                                                                         
  Form 1350                                                                          
  Form 1450                                                                          
  Form 1550                                                                          

  Form 1650                                                                         
  Form 1754                                                                         
  Form 3150                                                                           
  Form 4150                                                                          
  Form 4250                                                                         
  Form PTE-01                                                                        
  Form ABE-ES                                                                        
 
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