Tomball ISD tax rate (2025): 1.063% of assessed value
Tomball ISD adopted 1.063% for tax year 2025 — the fifth-highest school district rate in Montgomery County, Texas. At a $300,000 assessed value, that levy alone is $3,189 a year before exemptions.
- Adopted total
- 1.063% of assessed value
- Operations (M&O)
- 0.667%
- Debt service (I&S)
- 0.396% — 37.3% of the total
- County rank
- 6th of ten, lowest first
- At $300,000
- $3,189 a year, district levy only
- With county-wide levies
- 1.593% — $4,780 a year, before any city or special district
Reading the Tomball numbers
Tomball ISD's 1.063% total is built from the same 0.667% operations rate that Willis ISD and Cleveland ISD adopted, plus the largest debt-service half of the three, 0.396%. It sits sixth of ten, inside the table's tightest cluster — $84 a year above Willis and $85 below Montgomery ISD at $300,000, gaps small enough that the deciding line on a real bill is usually a utility district rather than the school district. No city named Tomball levies in Montgomery County's city table, so the city line depends entirely on where a given parcel sits.
A $300,000 home zoned to Tomball ISD pays $784 more school tax each year than the same home in Richards ISD, the county's lowest-rate district, and $577 less than in New Caney ISD, its highest.
Tomball ISD against the other nine
Sorted by how close each district's adopted total sits to Tomball's — nearest first, because the nearest rows are the alternatives a buyer is actually choosing between:
| District | Gap at $300,000 | Total | M&O | I&S |
|---|---|---|---|---|
| Willis ISD | $84 less a year | 1.035% | 0.667% | 0.368% |
| Montgomery ISD | $85 more a year | 1.091% | 0.717% | 0.374% |
| Cleveland ISD | $116 less a year | 1.024% | 0.667% | 0.357% |
| Humble ISD | $127 more a year | 1.105% | 0.755% | 0.350% |
| Magnolia ISD | $314 less a year | 0.958% | 0.666% | 0.293% |
| Conroe ISD | $340 less a year | 0.950% | 0.670% | 0.280% |
| Splendora ISD | $575 more a year | 1.255% | 0.755% | 0.500% |
| New Caney ISD | $577 more a year | 1.255% | 0.755% | 0.500% |
| Richards ISD | $784 less a year | 0.801% | 0.674% | 0.127% |
Adopted 2025 rates as a percentage of assessed value; the gap column prices the difference on a $300,000 assessed value, exemptions excluded.
No city named Tomball appears in Montgomery County's 2025 city-rate table. Whether a parcel zoned to Tomball ISD pays any city rate turns on the parcel's own incorporation, not on the school district.
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This site is paid to advertise Alta Homes (Alta Development Group LLC), a homebuilder active in Montgomery County, Texas. Figures on this page come from government records, not from Alta Homes.
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Sources
- Texas Comptroller Property Tax Assistance Division — Property Tax Rates and Levies — retrieved 2026-08-04. Adopted rates for tax year 2025. Rates for the following year are adopted between August 15 and September 30 and are not published by PTAD until the following January.
Equal Housing Opportunity. All housing advertised on this site is available without regard to race, color, religion, sex, handicap, familial status, or national origin. School district information is provided as a factual zoning reference only and is not a characterization of any school, district, or community. Verify current attendance zones with the district.