Second-installment property tax bills will be mailed out by Dec. 1 this year instead of in July per the usual schedule, officials said Thursday.

Cook County will launch a competitive fund offering loans of at least $20,000 each to suburban municipalities, school districts and other taxing bodies that are bracing for revenue shortfalls from an expected four-month delay in property tax bills this year, county President Toni Preckwinkle’s administration announced Thursday.

The county’s Local Government Bridge Funding Program, set for official launch by the county Board of Commissioners later this month, will make up to $300 million in “one-time…short-term operational cash flow” loans to taxing bodies most hurt by the late bills, officials said.