Montgomery County, IL property tax deadlines
3 coming property tax dates for Montgomery County, Illinois. Each one links to its official source and shows the day LevyDay last checked it.
| Next dates | Bills due | Last day without penalty | Appeal by | Exemption filing |
|---|---|---|---|---|
| Montgomery | Set by noticetax.illinois.govOct 24 | The due date on your billilga.govAug 31 | Set by noticeptab.illinois.govOct 24 | No date on fileState rulesread |
Deadlines in date order
| Date and source | Deadline |
|---|---|
| Varies, see rule set by noticeptab.illinois.govOct 24 | Appeal deadline Appeal to the state Property Tax Appeal Board You have 30 days from the postmark on the board of review's written decision (or on the notice of final township multipliers). |
| Varies, see rule set by noticetax.illinois.govOct 24 | Bills due Two installments, set by the county Most counties bill in two installments, usually June 1 and September 1. If bills go out after May 1, the first installment is due 30 days after the bill date. Your county treasurer sets the real dates. |
| Varies, see rule set by noticeilga.govAug 31 | Last day without penalty Last day without penalty: each installment's due date An installment unpaid after the due date on the bill (and not before June 1 and September 1) is delinquent, and interest of 1.5% a month starts. |
Appealing your assessed value
Appeal by the date on your noticeptab.illinois.govOct 24
If you think the county valued your home too high, you can appeal. Filing with the county is free and you can do it yourself.
Get help filing an appeal
After you send your details, we look for an independent appeal firm or attorney to take your case. We'll be in touch once one has agreed. Firms usually charge a share of what you save, and the one that takes it may pay LevyDay a referral fee.
LevyDay doesn't file appeals or give legal or tax advice. We only pass your details on. The independent firm or attorney that takes your case does the work and sets its own fee.
Get help filing an appealAlready passed
- Jul 10, 2026 2025 taxes, first installment montgomeryil.devnetwedge.comOct 24
- Sep 4, 2026 2025 taxes, second installment montgomeryil.devnetwedge.comOct 24
Good to know in Illinois
- Paying late: Late taxes carry an interest penalty of 1.5% per month, and it starts the day after the due date. More
- Appealing your value: Outside Cook County, you appeal your assessment to the county board of review. In Cook County, you can file with the county assessor or the county board of review. More ptab.illinois.govOct 24
- Homestead exemption: The General Homestead Exemption is for a home occupied by its owner as their principal dwelling place. It's worth up to $10,000 of assessed value in Cook County, $8,000 in counties next to Cook and $6,000 elsewhere. More tax.illinois.govOct 24
Places in Montgomery County
They are: Butler, Coalton, Coffeen, Donnellson, Farmersville, Fillmore, Harvel, Hillsboro, Irving, Litchfield, Nokomis, Ohlman, Panama, Raymond, Schram City, Taylor Springs, Waggoner, Walshville, Wenonah, Witt. Every place in the county gets the dates above.
Nearby in the Illinois list
MarshallMasonMassacMenardMercerMonroeMorganMoultrieOglePeoriaPerryPiatt