My firm sends technicians to cell tower sites to test antennas and transmission lines for radio frequency loss (using an electronic network analyzer), and we just report our findings to the carrier — we don't do any hands-on repair work. Is this testing service taxable in Texas?

Plain-English summary

A firm sends technicians to cell tower sites — both during construction and once a site is operational — to test whether the tower's antennas and transmission lines meet radio frequency specifications. Using an electronic network analyzer, the technicians measure frequency loss (dB loss from coax cable and connectors), perform sweep testing and optimization on operational sites, and report their findings to the wireless carrier for the carrier's own independent follow-up action. The firm confirmed its personnel do no hands-on repair or construction work — they test, measure, and report only.

The Comptroller's answer was short and direct: these functions are not subject to sales tax. Testing and reporting on tower/antenna/transmission-line performance, without any hands-on repair, installation, or construction work, falls outside Texas's taxable service categories.

What this means for you

Telecom testing and RF engineering firms

Pure measurement-and-reporting services — verifying frequency loss, running sweep tests, and reporting results to the carrier without performing any physical repair or installation work — are not taxable in Texas. Keep this distinct from actual antenna installation, tower construction, or hands-on repair work, which would likely fall under different (potentially taxable) service categories.

Wireless carriers contracting for tower commissioning and optimization

You can expect independent testing/verification services (as opposed to installation or repair) to come without Texas sales tax, based on this letter's facts.

Accountants and tax professionals advising telecom infrastructure contractors

The key fact driving this exemption is the absence of hands-on work — the firm's role is purely diagnostic (measure and report), with the carrier handling any resulting repair or adjustment independently. A firm that also performs the repair work identified by its own testing would need separate analysis for that portion of its business.

Common questions

Q: Is testing cell tower antennas and transmission lines for frequency loss taxable in Texas?
A: No, when the service is limited to testing and reporting findings to the carrier, with no hands-on repair or installation work performed.

Q: Would the answer change if the firm also performed repairs based on its findings?
A: The letter doesn't address that scenario — it's limited to a firm that does no hands-on work at all; performing repairs would likely require separate analysis under different taxable-service rules.

Q: Can I rely on this letter for my own tower-testing business?
A: No. This opinion is rendered based on the facts presented, and if there are additional or different facts, the opinion may change; it can be relied on only by the taxpayer it was issued to.

Citations and references

No specific Tax Code section or Comptroller rule number is cited in this letter; the Comptroller confirms the testing-and-reporting service is nontaxable without quoting a statute or rule number in the response.

Source

• STAR search: https://star.comptroller.texas.gov/search?doc_type_code=L&tax_type_code=SST
• Opinion: https://star.comptroller.texas.gov/view/9902236L

Original ruling text

February 3, 1999

Dear **:

Thank you for your recent letter which is restated in part with response below.

Once the cell towers for telecommunications are built, BAE has technicians that
travel to a cell tower site and perform a test to verify if the tower meets
radio frequency specifications (test the lines and antennas). We consult
directly for the carriers in most circumstances. This procedure is performed
with the use of an electronic network analyzer, which is capable of calculating
theoretical frequency loss. Our findings are reported to the carrier for
further action by the carrier should any be needed.

Response: In our telephone conversation of February 3, 1999, you stated that
your firm does testing at tower sites on the antennas and transmission lines to
determine frequency loss (dB loss from coax and connectors) during the
construction of the site and then does sweep testing and optimization when the
site is in operation. You stated that your personnel do no hands on work and
simply report your findings to the carrier. Any action taken by the carrier is
independent of your firm.

The functions you describe are not subject to sales tax.

This opinion is rendered based on the facts presented. If there are additional
or different facts, the opinion may change.

You may call me toll free at 1-800-531-5441, ext. 3-4680. The direct line is
512/463-4680. You may also write to Tax Policy, Comptroller of Public
Accounts. The email address is .

Sincerely,

Al Van Allen
Tax Policy Division

cc: **