Grand Oaks property tax rate
Unincorporated Magnolia ISD area, Montgomery County, TX · MUD: Grand Oaks MUD · School: Magnolia ISD
Units every section pays
| Taxing unit | Rate per $100 | Tax year · source |
|---|---|---|
| Montgomery County | 0.386 | 2026 · County Tax Office |
| Montgomery County Hospital District | 0.0458 | 2026 · County Tax Office |
| Lone Star College System | 0.1058 | 2026 · County Tax Office |
| Magnolia ISD | 0.9325 | 2026 · County Tax Office |
| Grand Oaks MUD | 0.8 | 2026 · County Tax Office |
| Montgomery County ESD 10 | 0.0963 | 2026 · County Tax Office |
These 6 units apply to all 2 sections. The rest differ by section — see the comparison below.
Compare sections
2 sections fall into 2 different tax combinations. Find the section on the property's MCAD record (the legal description) to know which row applies.
| Sections | Units that differ | Combined | Tax on $400k | |
|---|---|---|---|---|
| Group 1 02 | — | 2.3664% | $9,466 | Calculator |
| Group 2 03 | City of Magnolia 0.2234 | 2.5898% | $10,359 | Calculator |
Not in the combined rate: PID assessments, TIRZ (which do not add a tax), and HOA dues.
Across verified groups here, the gap between the lowest (2.3664%) and highest (2.5898%) combination is $894 a year on a $400,000 home. The county median is 1.91%.
Within Unincorporated Magnolia ISD area, developments range from 1.5664% (7301 FM 1488 Development) to 3.0664% (Colton). See all 338.
Estimated yearly property tax
| Taxable value (yearly, no exemptions) | Group 1 | Group 2 |
|---|---|---|
| $300,000 | $7,099 | $7,769 |
| $400,000 | $9,466 | $10,359 |
| $500,000 | $11,832 | $12,949 |
| $750,000 | $17,748 | $19,424 |
| $400,000 w/ school homestead* | $8,160 | $9,054 |
*Applies only the mandatory $140,000 school-district homestead exemption (Texas Tax Code §11.13(b)). Other units may offer optional homestead exemptions plus over-65/disabled exemptions, so a homestead bill is often lower. Taxable value is the appraised value, which can differ from the price paid.
Pick a group above to open the monthly cost calculator →
What's here
6 parcels: 2 commercial/industrial; 2 exempt (common areas, public); 2 other (utility, personal, minerals).
Source: MCAD parcel records via Montgomery County GIS parcel layer (property-type codes and improvement data), retrieved Oct. 29, 2026. Counts only; no owner data used.
Sections (2)
| Section | Plat name | MCAD code | Group | Confidence | Parcels |
|---|---|---|---|---|---|
| 02 | Grand Oaks 02 | S539102 | Group 1 | high | — |
| 03 | Grand Oaks 03 | S539103 | Group 2 | medium | — |
Split sections (no single rate): Grand Oaks 01. Under 80% of each falls in one set of districts, so the rate depends on the lot; check each address on MCAD.
Other developments in Grand Oaks MUD
- Glen Oaks — 2.3664%
All developments in Grand Oaks MUD →
Rates: Montgomery County Tax Office and Texas Comptroller (plus official district documents where noted in data notes). Districts: Montgomery County GIS, checked against MCAD parcel records. See sources & method.
Informational only. This site is not tax, legal, financial, or real estate advice, and it is not affiliated with Montgomery County, the Montgomery Central Appraisal District, the Montgomery County Tax Office, or any other government body. Rates are nominal (before exemptions) and come from public sources that can be wrong or out of date. District boundaries here are approximate. Always verify a specific property on the MCAD property search and confirm current rates with the Montgomery County Tax Office.