You may pay in person or mail payment to Winnebago County Treasurer's Office, located at:

    Winnebago County Administration Building
    404 Elm Street, Room 205
    Rockford, IL 61101

You may pay online through this website - click on view or pay bill on the homepage.

You may pay at many local banks (please note that some banks are customers only) Have your original bill with you: 

Associated - Customers only, CBI Bank & Trust, First Community Credit Union, First Mid, Generations Credit Union - Customers only, German American State Bank, Harvard Bank, Holcomb Bank, Illinois Bank & Trust, Members Alliance Credit Union, Midland State Bank, Northwest Bank, Rockford Bell Credit Union, Rockford Community Bank, Solutions Bank, State Bank of Davis, Stillman Valley Bank, The First National Bank in Amboy, Union Savings Bank. 

Yes, as long as the postmark is made by the post office and not by a metered postal machine, because the machine's date can be altered. The payment must be dated by midnight of the due date in order to avoid penalty costs.

Yes. You can pay online at taxes.wincoil.gov and follow the link to process your payment. There is a fee of 2.25% for all debit and credit card payments. You can also pay in our office with a debit or credit card, the same fee applies. You can call (815) 859-9650 and follow the prompts to pay over the phone. The same fee applies to credit and debit cards.

There are many tax code districts within this county. Every parcel of property is located within the boundaries of a specific combination of taxing bodies. The tax rate varies because the number of taxing bodies attached to each parcel varies.

If you did not receive a tax bill during the month of May, or if you lose your bill, a computer print-out of the essential information contained on the missing printed version of the bill can be provided by the Treasurer's Office. You can also print a bill from our website.

Caution: Failure to receive your tax bill does not void the tax or prevent the addition of penalties and costs.

The proper account can easily be credited if the Parcel ID number is written on the payment check.

We require a signature on file for a change of address. The upper left hand corner of your tax bill is a convenient "Change of Address Form." You may fill it out and return it to us either with your tax payment or separately.

As an alternative, we can either FAX or mail you a form so that you may send us the necessary information. You can also print a change form from this website. Your signature assures us that we are not responding to a deceptive request.

The County Treasurer's Office does not accept partial payments. If you mail us a partial payment, we will return it to you.

The Supervisor of Assessments has the responsibility for a variety of exemptions, legal descriptions, mapping, and address clarifications, as well as the filing of assessment complaints. Contact that office for assistance on all of those particular matters at (815) 319-4460.

Property is taxed, not individuals. Tax bills are payable on the prior year's assessment, and taxes are due for a full calender year.

Prorating of the tax bill between the buyer and the seller, based on the length of ownership of property, is generally done at the time the property changes hands and written into the contract. The current owner is liable for the entire tax amount due.

Many mortgage companies have contracts with one of the national tax service firms.

These organizations do research to match property code numbers with tax amounts. The mortgage company sends each county a payment file, accompanied by a single check, to pay the real estate taxes of all properties on which it holds funds in escrow for that purpose.

You would then miss notices sent out regarding assessment changes, exemption renewals, notice of unpaid taxes and tax sale, as well as the tax bill itself.

If in doubt whether you need to forward your bill for payment, contact your mortgage holder.

Our practice is to return the second payment to the sender of that payment. We are not able to arbitrate disagreements between payers, and we ask the parties involved to decide who is entitled to the refund.

In September, before any delinquent taxes are sent to the October tax sale, certified letters are sent to owners informing them of the dates and penalties involved regarding any current unpaid taxes.

A notification is also published in a local newspaper.

When lenders hold money in escrow for property tax payments, it is their obligation to pay the taxes on time, and for the appropriate amount. In cases where a mistake is made, the lender is responsible for all penalties and fees incurred. These fees are to come out of their corporate account, not the escrow account in their keeping.

After the due date, a late penalty is added at the rate of one and one-half percent per month. This penalty is not prorated. The exact amount of the penalty can be learned by a call to our office at (815) 319-4400.

At the end of October, since all property taxes in the county must be paid each year, delinquent taxes are offered at a tax sale. At this time, tax buyers bid for the opportunity to pay delinquent taxes, and acquire a lien on the property. This lien must be paid back to the tax buyer at whatever rate of interest the successful bidder established in his or her winning bid.

After the tax sale, which ends the annual tax cycle, all records of delinquent taxes move to the County Clerk's Tax Extension office at (815) 319-4253. That office must be contacted for information on the redemption amounts of sold taxes.

No, a lien has been put on your property. Eventually it could lead to the loss of your home, but only if you made no efforts to clear the tax lien for over two years.

An equitable assessment of a parcel's value is one important part of the process to establish the appropriate real estate tax on a piece of property. For tax purposes, the value of each property on January 1st of the taxable year is used. The assessors use a numerical equalization formula to make sure all properties within the county are uniformly assessed at 1/3 of the fair market value. That amount becomes the property's taxable value, except in situations where that property holder is eligible for credits or exemptions*. In that circumstance those amounts are subtracted from the assessed value, which then establishes a new and lower taxable value.

The other and equally important part of the determination of a property's real estate tax is the tax rate. Tax rates vary among the 237 tax code districts within the county, since each parcel of property lies within the boundaries of several taxing bodies. Tax rates are calculated by the Tax Extension Division of the County Clerk's office for each individual taxing district. This is accomplished by dividing the amount of money (the levy) that the taxing units of local government (school, forest preserve, township, county, etc.) budget to raise from property taxes, by the tax base for that jurisdiction. All of these determinations are of course subject to legal limits.

With the taxable value of each property established, and the tax rate determined through the actions of the many taxing bodies, it becomes possible to calculate the real estate property tax on all of the 150,000 parcels. The tax rate is multiplied against the taxable value of each parcel of real estate to arrive at the property tax. To calculate the exact dollar and cents amount of the tax, or to check the accuracy of your tax bill, you must remember to move the decimal point of the tax rate two places to the left, since the rate is based on hundreds.

*Owner Occupied Exemption, Senior Citizen Homestead Exemption, Senior Citizen Freeze, Homestead Improvement Exemption, Disabled Veteran Exemption and 4 others Note: In general, properties owned by the US Government, State of Illinois, Winnebago County, Municipalities, School Districts, Churches and 501(c)(2) and 501(c)(3) Charitable Organizations are exempt from payment of property taxes.

In that case, call your township assessor to talk over the matter with him or her.

Your assessor's name and phone number is displayed on the front of your tax bill, at the bottom of the box titled "Formula for Tax Calculation" on the left hand side of the bill.

A list of the names and phone numbers of the township assessors can be viewed HERE.