It’s still unclear when Cook County homeowners and other property owners will receive their property tax bills, top officials told commissioners this week, thanks to lingering defects in a tech upgrade already delayed by several years.

Now the county has launched a $300 million loan fund to help cities, towns and other taxing bodies that will struggle to make ends meet without those property tax revenues in hand.

The new system was supposed to be ready in April. County leaders committed to officially make the switch off their legacy system — housed on decades-old mainframe computers — to fully adopt Tyler Technology’s system in May in time for the normal bill schedule, with bills due by August 1.

“I want to be transparent with this board,” Chief Technology Officer Tom Lynch told commi

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