What's new for software developers?
September 10, 2025
The 2025 Software Developer Guide has been updated and revamped for the new year. The guide includes updated preferred language and form specifications in addition to the usual form change information.
July 16, 2025
The SCDOR requires a yearly Letter of Intent (LOI) before you can be approved for submitting MeF and paper forms for review. Email your completed LOI to LOISubmissions@dor.sc.gov by August 11, 2025. After the SCDOR has approved your LOI, you will receive an acceptance email and more information about our new forms submission process. You will not be able to submit forms for review until you have received the acceptance email.
If you have any questions or concerns, email us at softwaredevelopersforms@dor.sc.gov.
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Important reminders
- MeF material is available via the State Exchange, and all questions regarding MeF should be directed to MeF@dor.sc.gov.
- All submissions are assigned within 1-2 business days of receipt and will then be processed within 10 business days. Please note South Carolina state holidays may have an impact on those timelines.
- Taxpayers are required to file the following forms electronically, and we no longer provide updates for the paper versions of these forms. Taxpayers who file these forms by paper may be subject to a $500 fine for each paper return filed:
- ST388
- ST390
- ST394
- ST397
- ST403
- ST406
- ST429
- ST455
- ST3T