A lab calibrates and certifies test/measurement equipment for oil, gas, and petrochemical companies. Louisiana doesn't tax this service when only minor adjustments are needed. Does Texas have a similar exemption for calibration/certification services involving minor adjustments?

Plain-English summary

A lab that calibrates and certifies test/measurement instrumentation — mainly for oil/gas pipeline and petrochemical customers — periodically receives equipment (every 6 months, year, or two years) to calibrate and certify per manufacturer guidelines, sometimes performing repairs, and occasionally returning equipment to the factory when it can't handle the calibration in-house. The lab noted that in Louisiana, this type of service isn't taxable when only minor adjustments (not major ones) are needed, and asked whether Texas has a similar carve-out.

The Comptroller's answer: Texas doesn't have that carve-out. Repair, remodeling, maintenance, and restoration of tangible personal property is a taxable service in Texas, full stop — and making adjustments so equipment operates within specified tolerances counts as taxable maintenance even if the adjustment is minor and doesn't amount to a full repair. Two exemptions were considered and ruled out as inapplicable here: (1) services required by law to conserve energy or protect the environment, and (2) services performed on tangible personal property that would itself be exempt if sold at the time of the service — the Comptroller wasn't aware of either applying to this type of equipment.

The one exception: if the equipment is simply tested, with no adjustments made or needed for certification, that pure testing service is not taxable.

What this means for you

Calibration and testing labs serving oil/gas, petrochemical, or other industrial clients

Don't rely on another state's minor-adjustment exemption as a guide for Texas — Texas taxes calibration/certification work as maintenance the moment any adjustment (however small) is made to bring equipment within tolerance. If you can structure a service call as pure testing with zero adjustment, that portion is nontaxable; anything involving adjustment is taxable.

Industrial equipment owners sending gear out for periodic calibration

Expect Texas tax on calibration/certification invoices whenever the lab actually adjusts your equipment, even for routine minor tuning. Ask your vendor to separately identify testing-only visits (no adjustment) if you want to isolate any nontaxable portion.

Accountants and tax professionals

This letter is a useful reminder that Texas's "maintenance" category for taxable services is broad — it doesn't scale down for minor or routine adjustments the way some other states' repair/maintenance exemptions do. The pure-testing carve-out is narrow and requires literally no adjustment being made.

Common questions

Q: Is equipment calibration and certification taxable in Texas if only minor adjustments are needed?
A: Yes. Texas taxes any adjustment to bring equipment within tolerance as maintenance, regardless of how minor the adjustment is.

Q: Does Texas have an exemption like Louisiana's for minor-adjustment calibration services?
A: No, according to this letter — the Comptroller found no equivalent Texas exemption.

Q: Is there any way calibration-related work can be nontaxable in Texas?
A: Yes — if the equipment is simply tested with no adjustments made or needed for certification, that testing service is not taxable.

Citations and references

No specific statute or rule section was cited in the available text of this letter.

Source

• STAR search: https://star.comptroller.texas.gov/search?doc_type_code=L&tax_type_code=SST
• Opinion: https://star.comptroller.texas.gov/view/200007475L

Original ruling text

July 10, 2000

Dear **:

Thank you for writing to ask about the taxability of the calibration and
certification services of test instrumentation primarily for oil/gas pipelines
and petrochemical industries.

These companies send their test/measurement equipment to your lab in CITY
periodically (every 6 months, or year or 2 years) to be calibrated and
certified per the manufacturers guidelines. You also perform some repairs.
Sometimes, when you are unable to perform the calibration or repair, you return
the equipment to the factories to provide the calibration and certification.

You indicate that when you perform some of these same services in Louisiana,
these services are not taxable when major adjustments are not required. You
inquire whether Texas may have a similar exemption. The repair, remodeling,
maintenance, and restoration of tangible personal property is a taxable service
in Texas. Making adjustments to equipment so that it operates within specified
tolerances is considered maintenance even if the adjustments are not major or
sufficient to constitute repair.

There are two exemptions that may apply in the case of these services to
tangible personal property. These services when required by law in order to
conserve energy or protect the environment are exempt. Also, these services
are exempt when performed on "tangible personal property" that would be exempt
if sold at the time of the performance of the service. I am not aware of any
situations where either of these two exemptions would apply to this type of
equipment. While Texas does not exempt the service if only minor adjustments
are made, testing services are not taxable. If the equipment is simply tested
and no adjustments are needed for certification, the service is not taxable.

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

You may call me toll free at 1-800-531-5441, ext. 3-4675. The direct line is
(512) 463-4675. You also may write to Tax Policy Division, Comptroller of
Public Accounts. You may also e-mail our tax help section at:
[email protected]>

Sincerely,

Tom Soto
Tax Policy Division