How are property tax rates determined in Texas?

Property tax rates in Texas are set by each taxing district (municipality, school district, park district, library, etc.) based on their annual levy (the amount of tax revenue they need). The rate is calculated by dividing the levy by the total assessed value of all property in the district.

What is the composite tax rate?

The composite tax rate is the sum of all overlapping taxing district rates that apply to a specific property. A typical property may be taxed by several overlapping districts. The composite rate determines your total tax bill when multiplied by your property's assessed value.

Why do tax rates vary within the same town?

Properties within the same municipality can have different composite rates because overlapping districts (school, park, fire, library) have different boundaries. A home in one school district may have a different rate than a home two blocks away in a different school district.

Mercedes, TX Property Tax Rate 2026 — Full Breakdown by District

Showing latest tax year with year-over-year changes. Full rate history available with a paid plan. View plans →

Property Tax — Tax Year 2025 (payable 2026)i

TX Comptroller

Composite Ratei

2.38%–2.82%-0.2%YoY

Varies by school district

Municipal Portioni

0.7850%+0%YoY30.1% of total

Effective Ratei

2.38%–2.82%

Est. Annual Taxi

$3K–$3K

Median Home Valuei

$111,800

Total Leviedi

$952.9M

Tax Per Capitai

$497

Rate varies by school district. Your actual rate depends on which school district your property falls in.

Rate Trend — click a year to explorei

20242025

Municipal

Other Districts

Where Your Tax Dollar Goesi

$0.50 Progreso ISD

$0.49 La Villa ISD

$0.46 Monte Alto ISD

$0.45 Hidalgo ISD

$0.45 Valley View ISD

$0.43 Edcouch-Elsa ISD

$0.43 Mission CISD

$0.42 Mercedes ISD

$0.42 Lyford CISD

$0.40 Donna ISD

$0.39 Pharr-San Juan-Alamo ISD

$0.39 La Joya ISD

$0.37 Sharyland ISD

$0.36 Weslaco ISD

$0.36 McAllen ISD

$0.33 Edinburg CISD

$0.30 City of Mercedes

$0.22 Hidalgo County

$0.06 South Texas College District

Estimated Tax by Home Valuei

$50K

$1,192–$1,412

$100K

$2,384–$2,825

$150K

$3,576–$4,237

$200K

$4,767–$5,650

$250K

$5,959–$7,062

$300K

$7,151–$8,475

$350K

$8,343–$9,887

Highlighted value is closest to median home value ($112K)

19 Overlapping Taxing Districtsi

Progreso ISDUnit K-12i

50%1.3029%

$3.8M levied

La Villa ISDUnit K-12i

49%1.2766%

$1.5M levied

Monte Alto ISDUnit K-12i

45.6%1.1868%

$2.5M levied

Hidalgo ISDUnit K-12i

44.7%1.1649%

$9.8M levied

Valley View ISDUnit K-12i

44.5%1.1599%

$12.0M levied

Edcouch-Elsa ISDUnit K-12i

43.5%1.1325%

$5.8M levied

Mission CISDUnit K-12i

42.7%1.1130%

$35.7M levied

Mercedes ISDUnit K-12i

42.1%1.0972%

$9.1M levied

Lyford CISDUnit K-12i

42.1%1.0962%

$205K levied

Donna ISDUnit K-12i

40.3%1.0492%

$25.8M levied

Pharr-San Juan-Alamo ISDUnit K-12i

38.8%1.0110%

$68.4M levied

La Joya ISDUnit K-12i

38.5%1.0025%

$35.3M levied

Sharyland ISDUnit K-12i

36.8%0.9575%

$42.0M levied

Weslaco ISDUnit K-12i

36.2%0.9433%

$34.4M levied

McAllen ISDUnit K-12i

35.8%0.9322%

$87.1M levied

Edinburg CISDUnit K-12i

33.1%0.8617%

$91.4M levied

City of Mercedesi

30.1%0.7850%

$8.3M levied

Hidalgo Countyi

22.1%0.5750%

$373.0M levied

South Texas College Districti

6.2%0.1620%

$106.7M levied