Musk Says Terafab Chip Plant Would Make Grimes County’s Top Revenue Source as SpaceX Defends Tax Deal

Elon Musk said SpaceX and Tesla’s Terafab semiconductor project would become Grimes County, Texas’ biggest revenue source, as the county moved forward with tax incentives that have sparked local opposition. Musk’s comments came in the aftermath of a heated county vote on a reinvestment zone and a 100% property-tax abatement for the proposed Terafab facility, which the county commissioners approved by a 4-1 margin on June 3, according to KBTX. Precinct 2 Commissioner David Tullos cast the lone “no” vote, arguing the abatement “went too far” and that SpaceX was not transparent enough with the county during the process. KBTX reported that Judge Joe Fauth and others framed Terafab as a “generational change,” while residents raised concerns about safety, long-term growth, and whether guidelines are being followed as the project advances.

Under the county’s plan, the abatement would give SpaceX a full exemption on the county’s property taxes tied to Terafab, with the specific structure set out in agreements Grimes County later released. KBTX said the deal provides a 10-year tax abatement on buildings and equipment, running from 2027 through 2036. In exchange, SpaceX and its partners would make a $10 million payment to Grimes County within 60 days of executing the agreement, and also cover $35,000 of the county’s legal fees, according to the documents KBTX reviewed.

Musk, responding to criticism of the tax breaks, argued that Grimes County would still benefit financially even if property taxes on the facility were exempted for years. In market coverage of Musk’s post, he said SpaceX would pay an annual amount that would increase the county’s tax revenue by about 25%, and that the Terafab project would be “by far” the biggest revenue source for the county. He also said the request for property-tax relief was standard practice for investments involving extremely expensive chipmaking equipment, adding that property taxes on such machines could create a competitive disadvantage for the project relative to other semiconductor fabs.

The documents released by the county also outline job and investment requirements that would be expected to accompany the tax deal. KBTX reported that under the agreements SpaceX must invest at least $5 billion by 2030 and create 1,800 jobs by 2035. KBTX also said there are no penalties if SpaceX hits 90% of those goals, and that the agreements include provisions allowing SpaceX to terminate the agreement at any time with 30 days’ notice, subject to potential repayment of up to three years of taxes.

Beyond local tax terms, the Terafab proposal sits inside Musk’s broader push to build chips for multiple parts of his business ecosystem. Reporting on Musk’s earlier Terafab announcement described the project as a joint effort involving Tesla and SpaceX, with additional links to his AI operations. In the Grimes County context, KBTX described the Terafab plant as vertically integrated and aimed at serving semiconductor demand “used in Tesla products” and eventually AI systems, while TechCrunch and other coverage described the project as a multi-phase semiconductor and advanced computing facility whose ambition includes high-volume output tied to Musk’s compute targets.

Still, several key uncertainties remain, at least from what the county has disclosed publicly. KBTX reported on June 6 that the agreements it reviewed were approved by county officials but had not yet been signed by SpaceX at the time the documents were obtained. KBTX also said there were open questions about the project’s exact footprint, with some details and maps presented at the hearing leaving room for interpretation.

Next, observers will likely focus on whether the remaining paperwork is finalized and on the early execution milestones that trigger the county’s longer-term tax collections. If Terafab proceeds as planned, Grimes County would begin collecting taxes from the plant after 2036, though KBTX said the county agreed to return any amounts beyond $20 million each year to SpaceX under the economic development agreement. The near-term window is also likely to include additional public scrutiny as county and school-district tax mechanics are finalized alongside construction timelines.