Here are the 2019 Instructions for the Michigan Homestead Property Tax Credit.
The total household resources are the total income, taxable and nontaxable. Please check the list to see if there were possibly some things that are otherwise not included in your income that this credit counts as income.
Here is a link to the MI 1040CR Homestead Property Tax Credit Claim. Please check the section under Total Household Resources to check if there are any categories that would have otherwise been unexpected to count.
