The County Treasurer shall receive and safely keep the revenues and other public monies of the county, and all money and funds authorized by law be paid to her, and disburse the same pursuant to law. The County Treasurer must keep a record of all such funds and report monthly to the County Board the balances of these funds.
The County Collector prepares bills for the purpose of tax collection of real estate, drainage, and mobile home taxes within Whiteside County. Upon receipt of tax monies, the County Collector proceeds to disburse these funds to more than 140 taxing districts. The 2024 taxes payable 2025 total to be collected are $101,388,931.80. Real Estate tax is $98,835,123.12, drainage tax is $645,746.40 and railroad tax is $1,908,062.28.
2025 Important Tax Dates
June 2
| Mobile Home Tax Due Date
|
June 3
| Mobile Home Penalty
|
May 14
| Real Estate Tax Bills mailed
|
June 17
| 1st Installment Real Estate tax due date
|
June 18
| Real Estate Tax Penalty (See penalty chart (PDF))
|
September 3
| 2nd Installment Real Estate Tax due date
|
September 3
| Last day to pay at the bank
|
September 4
| 2nd Installment penalty (See penalty chart (PDF))
|
| November 6 | Tax Sale (Information) |