Modifies the senior citizens property tax relief credit

HB 1533 modifies Missouri's senior citizens property tax relief credit to clarify eligibility and calculation rules. It affects Missouri residents aged 65+ (or 60+ with surviving spouse Social Security benefits), disabled individuals (unable to work for 12+ months), or veterans with 100% service-connected disabilities who own or rent a homestead. Key changes include adjusting income calculations to add back certain benefits (like Social Security), requiring proof of disability or veteran status, and specifying residency requirements for surviving spouses. The bill also updates definitions for "homestead," "property taxes accrued," and "gross rent" to streamline claims.