Can a global architecture firm buy computers tax-free in Missouri if its headquarters -- but not all its offices -- is located there?

Plain-English summary

The Missouri Department of Revenue ruled that an architectural, engineering, planning, interiors, graphics, and consulting firm is entitled to the sales tax exemption for computers, computer software, and computer security systems purchased by architectural or engineering firms headquartered in Missouri, even though the firm operates more than twenty offices worldwide.

Section 144.030.2(28), RSMo exempts such computer purchases for firms "headquartered in this state," and defines that phrase to mean the office administering at least four "integrated facilities" is located in Missouri. Here, the firm's corporate headquarters -- performing firm-wide accounting, legal services, IT services, and marketing -- sits in Missouri, and all of the firm's twenty-plus offices worldwide share resources and operate under the central management and direction of that Missouri headquarters, even though each office is run as a separate profit center. Because the offices are integrated (centrally managed, resource-sharing, and part of one consolidated firm) rather than independent businesses, and the administrative headquarters for all of them is in Missouri, the firm satisfies both the "headquartered" and "integrated facilities" requirements and can claim the exemption on its computer, software, and security-system purchases.

What this means for you

Architecture and engineering firms with a Missouri headquarters

If your firm's central administrative office -- the one handling firm-wide functions like accounting, legal, IT, and marketing -- sits in Missouri, and you manage at least four offices under that central direction (even if each office is a separate profit center), you may qualify for this exemption on computers, software, and computer security systems, regardless of how many additional offices you have outside Missouri.

Multi-office professional service firms generally

The key test isn't where most of your offices or revenue are located -- it's where the administrative management function sits and whether your offices operate as one integrated firm (shared resources, central direction) rather than truly independent businesses. Separate profit-center accounting for each office doesn't defeat "integration" as long as central management and resource-sharing exist.

Accountants and tax professionals advising design firms

Section 144.030.2(28), RSMo is narrowly targeted at architectural and engineering firms -- confirm your client's business actually falls within that description (this ruling's Applicant also did planning, interiors, graphics, and consulting work alongside architecture and engineering) and that it can show at least four integrated facilities managed from its Missouri headquarters.

Common questions

Q: Does a firm need most of its offices in Missouri to claim this exemption?
A: No. The statute only requires that the office administering the firm's integrated facilities be located in Missouri. This firm had headquarters plus one other Missouri office, but more than twenty offices worldwide, and still qualified.

Q: What counts as an "integrated facility" for this exemption?
A: The ruling treated the firm's offices as integrated because they share resources and are under the central management and direction of the Missouri headquarters, forming one consolidated firm -- even though each office also operates as a separate profit center for internal accounting purposes.

Q: Does this exemption cover other equipment besides computers?
A: No. Section 144.030.2(28), RSMo is limited to computers, computer software, and computer security systems -- not other office or design equipment.

Q: Can another multi-office professional firm rely on this ruling?
A: Not automatically. A Missouri letter ruling binds the Department only as to the requesting Applicant, only for three years, and only while the facts and law don't change. A firm in a different profession (not architecture or engineering), or one without genuinely integrated, centrally-managed offices, would need its own analysis.

Citations and references

Statutes:

• Section 144.030.2(28), RSMo (exemption for computers, computer software, and computer security systems purchased by architectural or engineering firms headquartered in Missouri)

Source

• Landing page: Missouri DOR Rulings Search
• Ruling: LR 8350

Original ruling text

Dear Applicant:

This is a letter ruling issued by the Director of Revenue under Section 536.021.10, RSMo, and Missouri Code of State Regulations 12 CSR 10-1.020, in response to your letter dated February 24, 2025.

The facts as presented in your letter ruling request, and previous letter ruling request, are summarized as follows:

Applicant is an architectural, engineering, planning, interiors, graphics, and consulting firm. Applicant’s corporate headquarters is located in Missouri. Applicant operates over twenty offices worldwide, including an office in Missouri in addition to its Missouri headquarters. The offices all provide professional design services, share resources, and are under the central management and direction of Applicant’s Missouri headquarters. While Applicant’s offices are separate and distinct businesses and are operated as separate profit centers, the offices are consolidated for tax purposes because Applicant and its offices are one firm. Applicant’s Missouri headquarters performs firm wide accounting, legal services, IT services, and marketing. Some of Applicant’s executive team live in different cities, but their staff is located at the Missouri headquarters. Applicant performs no construction activity.

ISSUE:

Is Applicant entitled to claim the exemption provided in Section 144.030.2(28), RSMo?

RESPONSE:

Y es. Applicant is entitled to claim the exemption provided in Section 144.030.2(28), RSMo.

Section 144.030.2(28), RSMo, provides an exemption from sales tax for “[c]omputers, computer software and computer security systems purchased for use by architectural or engineering firms headquartered in this state.” The phrase “headquartered in this state” is defined by the statute to mean “the office for the administrative management of at least four integrated facilities operated by the taxpayer is located in the state of Missouri[.]”

Applicant is an architectural firm that operates over twenty facilities worldwide. The office for the administrative management of all of Applicant’s facilities is located in Missouri. The offices all provide professional design services, share resources, and are under the central management and direction of Applicant’s Missouri headquarters, as such, Applicant meets the requirement that its facilities must be integrated. Therefore, Applicant is entitled to claim the exemption under Section 144.030.2(28), RSMo, for its purchases of computers, computer software, and computer security systems for its use.

This letter ruling is binding upon the Department of Revenue with respect to the Applicant for three (3) years from the date of this letter and is subject only to statutory changes by the General Assembly and to changes in the interpretation of law by the courts or administrative tribunals.   If a change occurs, the taxpayer who relies upon an outdated interpretation may be subject to additional taxes, interest and penalties, which may be imposed prospectively from the date of the change.   For this reason, the interpretation set forth above should be reviewed on a regular basis.   Please note that any change in or deviation from the facts as presented will render this ruling inapplicable.

S hould additional information be needed, please contact Associate Counsel J. Ross Shelton, General Counsel’s Office, Post Office Box 475, Jefferson City, Missouri 65105-0475 (phone 573-751-0961), or me.

Sincerely,

Trish Vincent