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IDR-1-DIS (N-08/23)          Printed by authority of State of Illinois, web only – one copy. 
 

                  Illinois Department of Revenue                                                                                      Year ending
                                                                                         *64012231V*
                  2023 Schedule 1299-D
            Income Tax Credits (for corporations and fiduciaries)                                                                      Month    Year
                  Attach to your Form IL-1120, IL-1041, IL-990-T. For tax years ending on or after December 31, 2023.                                                           IL Attachment No. 3

                        TENTATIVE FINAL
                                                                                                                       –                                                         
Enter your name as shown on your return.                                                 Enter your federal employer identification number (FEIN).                  

Read this information before completing this form:
Refer to Schedule 1299-I, Income Tax Credits Information and Worksheets, and Schedule 1299-D Instructions for information on how to complete this 
schedule. All figures should be rounded to whole dollars. If you have more credits than lines available, attach a separate schedule in the same format with 
all the required information and complete Step 3, Line 35, Column I, on this schedule only. 

Step 1:  Worksheet (Complete this step only if you earned this credit during your current tax year.)
       Research and Development - Follow the instructions on this worksheet to calculate the                              A                                                     B
    Research and Development credit amount to enter in Step 3, Column F.                                 Base period avg. expenses   This year’s expenses

    1 Enter the amounts from Schedule 1299-I, Line 6 of the Research and Development Worksheet.  1_________________                1  _________________
 2   Subtract Line 1, Column A from Line 1, Column B. If negative, enter zero.                                                     2  _________________
 3   Multiply Line 2 by 6.5% (.065). Enter the result here and in Step 3, Column F on the line with
     Credit Code 5340 in Column B.                                                                                                 3  _________________

Step 2:  Calculate your credit for the current year (Complete Step 3 before completing this Step.) 
 4   Enter the total amount of credit available to be carried into this tax year. See instructions.                                4   _________________
    
 5     Enter the amount from Step 3, Line 35, Column I here.                                                                       5  _________________

 6   Add Lines 4 and 5. Enter the total here.                                                                                      6   _________________
     
 7   Enter your income tax from Form IL-1120, Step 7, Line 47; Form IL-1041, Step 6, Line 44; or  Form IL-990-T,                   7  _________________
     Step 5, Line 21.
 8   Enter your Credit for Income Tax Paid to Another State from Form IL-1041, Schedule CR, Step 5, Line 59                        8   _________________
     (Form IL-1041 filers only, all others enter zero). 
 9   Subtract Line 8 from Line 7. If the amount is zero or negative, enter zero.                                                   9   _________________
  10 Enter the lesser of Line 6 or Line 9. This is the amount of credit you may claim this year. Enter this amount here and on 
     Form IL-1120, Step 7, Line 48; Form IL-1041, Step 6, Line 46; or Form IL-990-T, Step 5, Line 22.                             10  _________________

                                                                                         This form is authorized as outlined by the Illinois Income Tax Act. Disclosure of this 
            Schedule 1299-D Front (R-12/23) Printed by the authority of the state of     information is REQUIRED. Failure to provide information could result in a penalty. 
                                            Illinois - electronic only - one copy.

                                                                                  *64012232V*

Step 3:  Enter your Current Credits - Complete this Step before completing Step 2. Only credits earned or received in your current tax year should 
be listed here, even if they are not being used. Credit codes of the same type should be combined and reported on one line, except when they are earned by 
different members of a unitary group or are associated with different certificate numbers. You may use the worksheet in your Schedule 1299-D Instructions to 
determine your credit carryforward for next tax year. 
                        TENTATIVE FINAL
    A           B                  C                  D E                          F        G                             H             I
    Expiration  Credit             Credit Unitary       Certificate                Credit   Distributive                   Transferred  Total 
    Date        Code    Earned            Member        Number                      Amount  Share Credit                  Credit        Credits 
    YYYY-MM             YYYY-MM           FEIN                                     Earned   from K-1-P                    Amount        (F + G + H)
11 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
12 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
13 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
14 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
15 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
16 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
17 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
18 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
19 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
20 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
21 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
22 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
23 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
24 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
25 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
26 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
27 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
28  ____________   ________   ____________   _____________________   _____________________  _____________   _____________ _____________ _____________
29 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
30 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
31 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
32 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
33 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
34 ____________   ________   ____________   _____________________   _____________________  _____________   _____________  _____________ _____________
35  Enter the sum of Step 3, Lines 11 - 34, Column I, here and on Step 2, Line 5.                                                       _____________

    Schedule 1299-D Back (R-12/23)