Collin County Just Approved Its First Property Tax Rate Hike in 33 Years - How Much More Will I Actually Owe on My McKinney Home?

Collin County just approved its first property tax rate hike in 33 years - how much more will I actually owe on my McKinney home? The exact dollar increase depends on your home's assessed value, but every McKinney homeowner will see a higher county tax line on their 2025 bill, and the jump is bigger for higher-valued properties.

For more than three decades, Collin County held its tax rate flat or lowered it as rising home values did the heavy lifting on revenue. That streak just ended. County commissioners cited rising costs for infrastructure, public safety, and growth-related services as the reason they needed to raise the rate itself rather than just rely on appreciation. If you own a home in McKinney, Frisco, Allen, or anywhere else in Collin County, this is the first time in your adult life the county portion of your bill has gone up because of the rate, not just your home's value.

That distinction matters. A rate increase hits every property owner in the county, regardless of whether your specific home appreciated this year. If your McKinney home's appraised value stayed flat or even dropped slightly, you could still owe more in county taxes than last year simply because the rate itself climbed. This post breaks down how to translate the new rate into an actual dollar figure for your property, what else factors into your total bill, and what McKinney buyers and sellers should do differently in light of the change.

Why This Matters More Than It Sounds Like

A tax rate increase can sound abstract until you connect it to your own property. Your county tax bill is calculated by taking your home's assessed value, dividing by 100, and multiplying by the tax rate per $100 of valuation. When that rate goes up, every homeowner in Collin County pays more on the exact same assessed value than they did the year before.

For McKinney homeowners specifically, this comes on top of city, school district, and any special district taxes already on your bill. The county portion is usually a smaller slice of the total compared to the school district, but it is still real money, and this is the first time in 33 years that slice has grown because of a rate decision rather than market appreciation.

How to Estimate Your Actual Increase

The only way to know your real number is to run it against your own property's assessed value, not a county-wide average. Here is the simplest path:

• Pull your current assessed value from the Collin Central Appraisal District website.
• Compare the old county rate to the newly approved rate for the current tax year.
• Apply the rate difference to your assessed value to see the dollar change attributable to the county alone.
• Add that to any changes in your city, school, or special district rates, since those are set independently.

Homes in higher-value McKinney neighborhoods will see a larger dollar increase than lower-valued homes, even though the rate change is the same percentage for everyone, simply because the rate is applied to a bigger number.

What This Means for Buyers in McKinney and Collin County

If you're shopping for a home in McKinney, Prosper, or elsewhere in Collin County right now, your lender's monthly payment estimate may be using last year's tax figure. That can understate your true monthly cost, especially on higher-priced homes where the rate increase translates to a larger dollar amount. Before you make an offer, ask your agent or lender to re-run the estimate using the current approved rate rather than a prior-year number pulled from the listing.

This is especially worth double-checking if you're comparing homes across different parts of Collin County, since city and school district rates vary by location even though the county rate itself is now the same increase for everyone countywide.

What This Means for McKinney Sellers

If you're listing a home in McKinney, expect buyers and their lenders to be more tax-conscious than they were a year ago. A rate hike after 33 years of stability is the kind of news that gets attention, and savvy buyers will ask about it. Having an accurate, up-to-date tax estimate ready for your listing - rather than letting a buyer's agent find outdated numbers - can prevent last-minute payment-shock conversations during the option period.

It's also worth noting that this change arrives alongside several other factors already reshaping affordability conversations in Collin County, from insurance cost trends to new state housing laws. If you're also trying to figure out how recent zoning changes might affect inventory and pricing, this companion piece on Texas's new SB15 small-lot law covers another piece of the affordability puzzle worth understanding before you price or shop.

The Bottom Line

A county-wide rate increase doesn't affect every home the same way in dollar terms, even though the percentage change is uniform. Your specific assessed value, your neighborhood, and your home's price point all determine how much more you'll actually owe. Guessing based on a neighbor's bill or a general news headline isn't reliable enough for a decision as big as buying or selling a home.

Frequently Asked Questions

Does this rate hike affect my school district taxes too?

No, this change is specific to the Collin County portion of your tax bill. Your school district, city, and any special district rates are set separately and should be evaluated on their own when you're calculating your full property tax bill.

Will my property's assessed value also go up because of this?

Not necessarily. The rate increase is separate from your home's appraised value, which the Collin Central Appraisal District sets independently each year based on market conditions, not county budget decisions.

Where can I find my official assessed value and current tax rates?

The Collin Central Appraisal District website lists current assessed values, exemptions, and the tax rates adopted by each taxing entity, including the county, city, and school district that apply to your property.

Get a personalized estimate of how the new county rate affects your specific McKinney property before you list or make an offer. Reach out to Jane Clark at Keller Williams McKinney for a clear, current breakdown tailored to your home and neighborhood in McKinney and Collin County.