NEW OWNER TAX INCREASE

Why Did My Property Taxes Jump After Buying?

If you just purchased a commercial property and your tax bill skyrocketed, here's why — and what you can do.

WHY YOUR TAXES SPIKED

4 Reasons Your Tax Bill Jumped After Closing

Tax Cap Uncapping (MI)

Michigan's Proposal A caps annual taxable value increases — until the property sells. After closing, the taxable value 'uncaps' to the full State Equalized Value, often doubling or tripling your tax bill overnight.

Reassessment Triggered by Sale

In many jurisdictions, a property sale triggers a full reassessment. The assessor may use your purchase price as the new benchmark — even if you paid above market value to close the deal.

Prior Owner's Exemptions Expired

The previous owner may have held exemptions, abatements, or tax incentives that don't transfer with the property. When those fall off, the full tax burden lands on your first bill.

Sale Price Used as New Value

Assessors often treat your purchase price as proof of market value — regardless of property condition, deferred maintenance, or whether you overpaid in a competitive bidding situation.

STATE-BY-STATE BREAKDOWN

How Each State Handles Post-Purchase Assessments

The rules that drive your post-purchase tax increase depend entirely on where your property sits. Understanding how your state reassesses after a sale is the first step toward fighting back.

Michigan: The biggest culprit is tax uncapping under Proposal A. Annual taxable value increases are capped at 5% or inflation while you own the property — but after a sale, that cap resets and the taxable value jumps to the full SEV. Properties held for decades can see 200-300% increases. Learn more about Michigan property tax appeals.

Ohio: Properties are reappraised on a six-year cycle with a triennial update in between. A sale doesn't automatically trigger reassessment, but your purchase price will influence the next reappraisal. New owners should file with the Board of Revision if the assessed value exceeds true market value.

Indiana: Assessors use a trending methodology that adjusts values based on local market data. A sale can shift the trending factor for your property type, and new owners often see assessed values adjusted upward to reflect the purchase price in the next assessment cycle.

Post-purchase tax increases are especially common for multifamily properties and retail properties, where cap rates and income assumptions often shift significantly at the time of sale. Buyers of net-leased assets should also read our guide to triple net lease property taxes, since a post-closing tax spike can blow through the expense cap in a NNN lease and land squarely on the new owner.

Property owner reviewing an unexpectedly high tax bill after purchase

YOUR ACTION PLAN

3 Steps to Fight Your Post-Purchase Tax Increase

A higher tax bill after buying doesn't mean you're stuck. Here's exactly what to do.

Review Your New Assessment

Pull your assessment notice and compare the new assessed value to what you actually paid — and more importantly, to what the property is genuinely worth. Look for errors in square footage, property classification, or condition ratings. Even small mistakes can inflate your bill by thousands. Read our assessment guide for what to look for.

Gather Evidence of Over-Assessment

Your appeal is only as strong as your evidence. Pull comparable sales, income and expense statements, and any documentation of property condition issues (deferred maintenance, environmental concerns, vacancy). The goal is to show the assessor's value doesn't match reality. Learn more about the appeal process.

File Your Appeal — or Get Expert Help

Every state has strict appeal deadlines. In Michigan, you must file with the Tax Tribunal by May 31. In Ohio, complaints go to the Board of Revision by March 31. Miss the window and you're locked in for another year. If the numbers are significant, working with a property tax appeal firm can maximize your savings with no upfront cost. Start with a free property tax review to see where you stand.

AVOID THESE MISTAKES

Mistakes New Owners Make With Property Taxes

We see these errors from recent buyers constantly. Any one of them can cost you thousands — or lock you into an inflated assessment for years.

Assuming your purchase price is the correct assessed value — it often isn't, especially if you paid a premium or the property has issues

Missing your first appeal deadline — you typically have one shot per year, and the clock starts ticking the moment your assessment notice arrives

Not separating personal property from real property — fixtures, equipment, and tenant improvements may be incorrectly included in your assessment

Ignoring the assessment because you budgeted for higher taxes — even expected increases should be verified against actual market value

Waiting until next year to appeal — every year you delay compounds the overpayment and makes future appeals harder

In most cases, yes — and you should. The first assessment notice you receive after closing is also your first chance to challenge the new valuation, and every state we work in gives new owners a full appeal right. Michigan lets you file with the Tax Tribunal by May 31, Ohio opens a Board of Revision window until March 31, and Indiana gives you 45 days from the date on the notice. Waiting "until next year" means paying the inflated bill for a full cycle and letting the number become the baseline for future assessments. A quick free property tax review can confirm whether your post-purchase assessment is worth fighting right now.

No — but assessors often treat it that way. A single arm's-length sale is only one data point, and courts routinely hold that it does not automatically replace a full market-value analysis. If you paid above market because of a competitive bidding process, included personal property or tenant improvements, or bought a portfolio at a blended price, the sale price likely overstates real estate value. Our primer on assessed value vs. market value explains why the two numbers routinely diverge, and our appeal evidence guide explains how to document the difference and build a case the assessor has to take seriously.

Under Michigan's Proposal A, taxable value is capped at the lesser of 5% or inflation each year while you own the property — but that cap resets to the full State Equalized Value the year after a transfer of ownership. For a property held for decades, taxable value can double or triple overnight, even if nothing physical has changed. You can still challenge the new SEV and the underlying true cash value through the Michigan Tax Tribunal process, and a successful appeal resets your baseline going forward. Our page on Michigan uncapping walks through the rule in detail.

The strongest post-purchase cases combine three kinds of evidence: current market rents and expenses, comparable sales from the prior 12 to 18 months, and documentation of property-specific issues the assessor did not consider. For multifamily and office buildings, rent rolls and trailing-12 operating statements usually carry the most weight. For industrial and warehouse properties, condition reports and functional obsolescence arguments often matter more. The goal is to show the assessor a complete picture of value that your purchase price alone cannot convey.

Not necessarily, but without an appeal the trend usually goes one direction. Once a higher post-sale assessment is on the rolls, it becomes the baseline for future increases driven by mass appraisal updates, market trending, and reappraisal cycles. That is why our guide to why commercial property taxes increase stresses the compounding effect of accepting an inflated first-year number. A one-time appeal in the year after closing protects your cash flow for every year you hold the property.

You are legally allowed to file on your own, but commercial post-purchase appeals tend to be more technical than typical residential cases because assessors lean heavily on the sale price. Mounting a credible rebuttal usually requires an income approach, market-derived cap rate analysis, and comparable sales adjustments that most owners don't have time to build. Our DIY vs. professional comparison breaks down when self-filing makes sense, and a contingency-based review from EPTA means you can get an expert opinion without any upfront cost.

SELECT YOUR STATE

Find Your State's Appeal Process

Property tax appeal procedures vary by state. Choose your state below for a detailed guide to the appeal body that handles your commercial property tax appeal.

Michigan

Tax Tribunal

Michigan's statewide tax appeal body. Strict May 31 / July 31 filing deadlines depending on property type.

Michigan Tax Tribunal

Ohio

Board of Revision

Ohio's county-level first step for property tax appeals. March 31 filing deadline every year.

Ohio Board of Revision

Indiana

PTABOA

Indiana's county Property Tax Assessment Board of Appeals. Form 130 filed within 45 days of notice.

Indiana PTABOA

Commercial property tax appeal background

JUST BOUGHT A COMMERCIAL PROPERTY?

Get a Free Assessment Review

If your property taxes jumped after purchase, you may be overpaying. We'll review your assessment at no cost and tell you exactly where you stand. No fee unless we save you money.

Tax professionals reviewing assessment documents