The County Decisions That Will Set Your 2027 Tax Bill

The single biggest line on most Magnolia property-tax bills is the school district. The second is the county. The school bond gets the yard signs and the mailers; the Montgomery County budget, the thing that actually sets the county's slice of your bill, gets assembled almost entirely out of public view, on a calendar most residents have never seen. The county kicked off its fiscal-year 2026-27 budget process in April. It locks in on September 8. In between, the public is scheduled to get a word in exactly twice.

The calendar nobody hands you.

According to the county's own adopted budget calendar, the next four months run like this:

The FY 2026-27 budget calendar

1. April 9–July 15

   Budget development — departments and elected officials make their funding cases to the budget office. Mostly behind the scenes.

2. August 6

   Preliminary budget presented in open court — and the first scheduled window for citizen comment on it.

3. August 11–14

   Budget workshops, where the real line-item haggling happens.

4. September

   Public hearings on the proposed budget AND the tax rate — the legally required say before adoption.

5. September 8

   Scheduled final adoption of the FY 2026-27 budget and tax rate.

6. October 30

   First county paycheck issued under the new rates — the cycle is locked in.

Notice the shape of it. The spring "development" phase, April to mid-July, is where department heads and elected officials quietly make their funding cases to the budget office. By the time the preliminary budget lands in open court on August 6, most of the decisions are already drafted. A resident's voice is on the agenda at exactly two points: that August 6 meeting and the September tax-rate hearings. Miss both and the rate is adopted on September 8 without you.

The courthouse that could reset everything.

Behind the routine budget sits a decision an order of magnitude larger. On March 26, commissioners voted 4-1 to advertise for architect services for a new justice center and courthouse, the first concrete step toward a project the county has flagged as necessary because of growing criminal caseloads and jail overcrowding. Commissioners created a new district court, the 523rd, for the same reason. The price tag is not small, and it is not settled.

What a courthouse bond could cost you, per year

Courthouse alone (~$250M bond) ~$15–16M/yr

Courthouse + jail (~$700M, worst case) ~$43M/yr

Annual debt service, county estimates. A bond election, if called, could not reach the ballot until the window that opens in August — County Judge Mark Keough has said the financing decision comes later.

A $250 million courthouse pencils out to roughly $15–16 million a year in debt service. A worst-case $700 million courthouse-and-jail runs about $43 million a year, on 30-year bonds at current rates. That money has to come from somewhere, and "somewhere" is the same tax base that funds everything else. The county cannot place a bond on the November ballot until the 78-to-90-day window that opens in August, and County Judge Mark Keough has said the financing decision will be made later. The courthouse question and the budget question are about to land in the same late-summer weeks.

The road bonds already on the books.

None of this is happening on a blank slate. Voters approved a $480 million county road bond in May 2025, and the county has been selling that debt in stages, with its next roughly $60 million road-bond sale set on a June timeline. Road bonds are popular and arguably overdue on a county growing this fast, but they are still borrowed money serviced out of the same budget. Stack a courthouse on top of an active road-bond program and you get the kind of cumulative decision that shows up on a tax bill a year or two later, long after the votes that caused it have faded from memory.

A reminder on the rate itself.

For five straight years the county held its tax rate flat. Then in 2024 commissioners approved an 8.9% tax-rate increase, the first in five years. Whether 2027 brings another is one of the things the August–September process will decide. Texas truth-in-taxation law gives you the tools to follow it: the county must publish a no-new-revenue rate, roughly what would raise the same money as last year, and a voter-approval rate, the ceiling above which voters can petition for an election. Public hearings are required before the county adopts anything above the threshold. Those are the September dates on the calendar above.

How to actually be in the room.

The Commissioners Court meets in Conroe, at the Alan B. Sadler Commissioners Court Building, 501 N. Thompson. As of 2026 it meets on Thursdays, twice a month, a change made to comply with a new state agenda-posting law. Agendas post ahead of each meeting. If you want your comment on the record where it counts, the two dates to mark are the August 6 preliminary-budget meeting and the September tax-rate hearings. Everything before that is the county talking to itself. Everything after September 8 is done. The window in between is yours, and it is narrow.

Editor's note on format — We ran this as a straight explainer rather than a two-view piece because the calendar, the cost estimates, the vote, and the truth-in-taxation mechanics are matters of public record, not contested opinion. Where a figure is the county's own estimate, we say so. This piece carries a stable pen-name byline, per our ethics policy, which protects reporters on the county beat; the reporting is real, the name is changed.