The Property Tax Equation Confusion

As we went through school we all learned very important lessons like how to play Three Blind Mice on a recorder or what the square root of an obtuse angle is on a Tuesday. (Yes, I know that last one isn’t really a thing, but I think you get my point). What we didn’t get an education on is mundane things like balancing your checkbook, how to fill out a W4, or how property taxes are figured. So, I thought we’d touch on that last one this week.  

The property tax structure and everything that goes into it is a rather convoluted situation and I’m going to try my best to simplify it. There might be some minor details missing, but I think overall, you’ll get the idea.  

The property tax equation starts with the Assessor determining the assessed value of your home. Many things go into this like current “like home” sales, the cost of materials, depreciation, and more. Additionally, your land gets one assessed value while buildings get a different assessed value. Those are added together to get your total assessed value. It’s important to keep in mind that this is NOT the number you are going to pay taxes on. The next step is applying the residential rollback to your assessed value. This number is set by the state of Iowa each year and is the same for each residential property. (It’s a percentage that is applied to your total assessed value.) This gives us your Gross Taxable Value. Next comes any exemptions (military and homestead 65+). That is then your net taxable value. The levy rate for each taxing jurisdiction is applied to that number to give your gross taxes due. Finally, any credits are applied like ag land, disabled & senior citizen, family farm, and homestead credits.  This then give us your final net taxes due.  

One other small detail that you need to remember is that the County works in a two-year process. The assessed value on your home that you received this past winter is what will be used by my office to determine the amount of property taxes we could receive for FY2026 (we will do this figuring during FY2025). Then, the Treasurer will start collecting those July 1, 2025.  So, if your assessed value went up this past year, you won’t see those numbers used for property taxes for a couple more years.  

Like I said, it’s a complex and detailed process, but the important thing to remember is that whatever comes on your assessment, isn’t the final number that you’re paying property taxes on!  Also, if you don’t know if you qualify for an exemption or credit, I urge you to stop by the Assessors office here in the Courthouse. Finally, if you’re still confused, feel free to stop by our office and I’m happy to sit down with you and go through this all.  

Now, as far as how you need to fill out your W4…good luck. I’m pretty sure I just stopped calling my mom a few years ago for that! LOL! Until next time…