MyDec

Online Real Property Transfer Tax Declarations

The Illinois Department of Revenue has developed a free online program called MyDec, which will allow individuals to process real property transfer tax declarations, including authorizing and printing electronic stamps. All counties are eligible to participate.

• https://mytax.illinois.gov/MyDec/_/
• MyDec Preparer Procedure Manual
• Parcel Size 08-2025 – Note: Use the column labeled Assessor PIN and site size in acres