The City calculates your property taxes using your taxable value, principal residence exemption (PRE) percentage, the full millage rate, and the school operating millage. There is also a 1% Property Tax Administration Fee (PTAF). Before we talk about the math, here's what each of those things mean:
Taxable Value Every year, the City Assessor's office does an assessment of your property based on market value. They calculate the assessed value and taxable value of your property. The taxable value is sometimes equal to or less than the assessed value. The taxable value is the amount the City uses to calculate your property taxes. If you have questions about this, contact the Assessor's office at 616-456-3081.
Principal Residence Exemption (PRE) Simply put, your PRE is an exemption from the school operating millage. Your percentage is determined by whether or not you own and live in the home as a Michigan resident and if it is a single or multi-family home. If you don’t know your PRE percentage you can find it on your summer tax bill or call us at 616-456-3000.
Millage Rate A millage rate is a rate to determine property taxes. Each item on your tax bill has a set number of mills that are multiplied by every $1000 of your taxable value. You can look up the current and recent year millage rate for Grand Rapids on Kent County's website.
School Operating Millage This millage is calculated for property owners that don't have a PRE. 18 mills go toward the operating budget for the local public schools.
Now that you know more about what's involved, here are formulas for how your bill is calculated:
PRE portion
(taxable value * PRE percentage) / 1,000 * (full millage rate - school operating millage) * 1% administration fee
When you don't have 100% PRE you will also have to calculate:
Non PRE portion
(taxable value * (100% - PRE percentage)) / 1,000 * full millage rate * 1% administration fee
Here are some examples:
Example 1
- PRE: 100% (you live in a single family home, no rental rooms)
- Taxable Value: $50,000
- Millage Rate: 52.2390 (2017 Grand Rapids School District)
- School Operating Millage: 18 mills
100% = 1 for the equation below
(50,000 * 1)/1,000 * (52.2390 - 18) * 1.01
50,000 * 1 = 50,000
50,000/1,000 = 50
52.2390 - 18 = 34.2390
(50 * 34.2390) * 1.01 = $1729.07 total for summer and winter property tax
Example 2
You will use both equations above because you don't have the full 100% PRE, adding the PRE portion to the non-PRE portion.
- PRE: 50% (common when living in a duplex)
- Taxable Value: $50,000
- Millage Rate: 52.2390 (2017 Grand Rapids School District)
- School Operating Millage: 18 mills
100% = 1 and 50% = .5 for the equations below
PRE portion
(50,000 * .5)/1,000 * (52.2390 - 18) * 1.01
50,000 * .5 = 25,000
25,000/1,000 = 25
52.2390 - 18 = 34.2390
(25 * 34.2390) * 1.01 = $864.53
Non-PRE portion
(50,000 * (1 - .5))/1,000 * 52.2390 * 1.01
1 - .5 = .5
50,000 * .5 = 25,000
25,000/1,000 = 25
25 * 52.239 = $1,305.97
1305.97 * 1.01 = $1,319.03
$864.53 + $1319.03 = $2,183.56 total summer and winter tax
If you need an estimate of your property taxes, you can use our Property Tax Estimator by clicking Next below. You'll need to choose your school district, enter your taxable value and PRE percentage. This information can be found on the BS&A Online website or by dialing 311 or 616-456-3000.