This bill proposes amendments to tax rules specifically related to tax increment financing districts in Minnesota. It covers several key points:

1. Extension of Timeframe Rules: The bill extends certain time-specific rules for tax increment financing districts, specifically relating to how long these districts can operate under specific financial frameworks.

2. Income Restrictions: The bill aims to remove income constraints for some housing districts. This change would allow areas in metropolitan counties to have housing developments without the income limits that were previously imposed.

3. Use of Space for Commercial Purposes: The proposed amendments include a stipulation that no more than 20% of the square footage in buildings benefiting from tax increments can be used for commercial, retail, or other non-residential purposes.

4. Building Additions: The bill also provides guidelines for treating additions to existing structures as separate buildings under certain conditions, such as if the addition begins three years after the original structure was completed, and was not part of the original tax increment financing plan.

Overall, these changes are intended to provide more flexibility in the development and financial structuring of housing and commercial projects within tax increment financing districts in Minnesota, helping to facilitate development and potentially boost local economies.