Sum of adopted unit rates, before exemptions.
Core units only, homestead applied, tax year 2025.
Property Taxes in Katy
Katy stretches across Harris, Fort Bend, and Waller counties. The bill depends on the county, the school district, and any municipal utility district. Waller County rates are not in this dataset. The 2025 core rate above is City of Katy in Harris County with Katy ISD, before exemptions, and it does not include a MUD.
Scout's Pro Tip: Protest Every Year
With homes appreciating rapidly in Katy, county appraisal districts are aggressively increasing assessed values. Whether you are in HCAD, FBCAD, or WCAD, protesting your property tax appraisal annually is the best way to keep your tax bill in check.
Maximizing Exemptions
Filing your homestead exemption is optional, and strongly recommended if you want to save money. The standard General Residence Homestead Exemption in Texas removes $140,000 from your home's value for school district tax purposes. In Katy ISD (which has one of the higher school tax rates), this translates to significant direct savings.
Other Common Exemptions:
- •Over-65 Exemption: Provides an additional $60,000 off school taxes and places a ceiling on future school tax increases.
- •Disabled Veteran: Depending on the disability rating, can offer partial to 100% total property tax exemption.
Navigating MUD Taxes in Katy
Katy is famous for its massive, highly amenitized master-planned communities like Cinco Ranch, Cross Creek Ranch, and Elyson. These communities are almost entirely built around Municipal Utility Districts (MUDs) to fund infrastructure.
Strategy: Older sections of Katy (like parts of Cinco Ranch) have seen their MUD tax rates drop significantly as the infrastructure debt has been paid down. Newer communities further west will have higher MUD rates. Factor this into your monthly escrow payment.
Katy Home Equity & Market Trends
Katy real estate has experienced explosive growth, largely driven by highly-rated schools and commercial development along the Grand Parkway. As a result, many Katy homeowners are sitting on substantial equity.
The Texas 80% Rule
If you want to tap into your equity via a HELOC or cash-out refinance for home improvements (like adding a pool to beat the Texas heat), Texas law limits a home-equity loan, HELOC, or cash-out refinance to 80% of fair market value. A purchase mortgage can be higher.
Pacing Your Payoff
Because Katy home values appreciate strongly, making an extra principal payment can exponentially increase your wealth-building. A few extra dollars a month cuts years off your mortgage.