Michigan Data Center Sales Tax Exemption: Where Power and Water Are Written Into the Tax Code

Michigan's enterprise data center exemption in full — $250M of incremental investment, 30 jobs at 150% of the prosperity region median wage, 90% clean energy, municipal water with spare capacity, no property tax abatement unless every local council agrees, and a repayment that makes one party hand back everyone's savings with interest.

Four of the five state exemptions we have worked through ask about money and jobs. Michigan asks about power and water, and puts the answers in the statute as conditions of the exemption rather than as aspirations.

It is also the only one of the five where taking the sales tax exemption means giving up property tax abatements by default, and the one with the harshest repayment provision: the certificate holder can be made to hand back the tax that other people saved.

Two programmes, and one of them had to earn its continuation twice

Michigan runs an older qualified data center exemption and a newer enterprise data center exemption, both in MCL 205.54ee (Michigan Legislature; statute PDF).

The older one runs "beginning January 1, 2016 through December 31, 2050" — but its continuation was never unconditional, and the condition is unlike anything in the other four states. The exemption continues past 1 January 2022 "only if" local economic development corporations certified to the Michigan Strategic Fund that "the qualified data centers, the colocated businesses, and the contractors of the qualified data centers, collectively, have, in aggregate, established in this state at least 400 data center industry jobs or data center industry related jobs" since 2016 — and past 1 January 2026 only on the same test at 1,000 jobs.

Read that carefully, because it is a risk most offerings would never mention: in Michigan, whether your exemption continued turned on whether the industry as a whole hired enough people. A fully compliant project could have lost the benefit because other companies did not. Whether each threshold was certified as met is a question for the Strategic Fund's reports to the legislature — the statute sets the test; it does not record the answer.

The enterprise data center: ten conditions, not two

The newer exemption applies to data center equipment sold to a certified qualified entity or to its construction contractors, running through 31 December 2050 — or through 31 December 2065 if the facility sits on property in a brownfield plan "or on property that was once an industrial site used primarily as a power plant to generate electricity for sale".

To be an "enterprise data center" the Michigan Strategic Fund must determine the facility meets, or will meet within the certificate's time frame, all of the following. The first four are the familiar kind:

1. $250,000,000 of aggregate capital investment — and it must be incremental: investment counts only "to the extent that investment results in an increase in the total capital investment that the qualified entity and its affiliates, in the aggregate, maintain in this state" compared with before the certificate.
2. 30 qualified new jobs at "an annual wage that is equal to 150% or more of the prosperity region median wage", maintained through 2050 (or 2065). A "qualified new job" is likewise net — "in excess of the number of full-time jobs that the applicant and its affiliates maintained in this state before issuance of the certificate".
3. A green building certification within three years of being placed in service, from a named list: BREEAM, ENERGY STAR, Envision, ISO 50001, LEED, Green Globes or UL 3223.
4. A certificate from the Michigan Strategic Fund, which must specify the time frame to satisfy the criteria — "the lesser of 6 years or the time frame identified by the applicant".

The incremental tests deserve a moment. An incumbent gets less credit than a newcomer for building the identical building. A company that already holds capital and headcount in Michigan must grow its statewide totals; a first-time entrant starts from zero. Two sponsors can present the same $250 million project and only one of them qualifies.

Then the conditions that are really about the grid

This is where Michigan departs from every other state on this site.

Clean energy equal to 90% of forecast usage. At the time an exemption is claimed, the facility must have procured or will procure clean energy "equivalent to 90% of the facility's forecasted electricity usage on an annual basis". The statute names three ways to demonstrate it:

• "Self-supply through on-site generation that meets the definition of renewable energy";
• a long-term contract with the serving utility "which ensures no costs to serve the facility are passed onto other customers"; or
• participation in a voluntary green pricing program.

And it instructs the utilities to make this possible: electric, cooperative and municipal utilities "shall identify and, if necessary, develop tariffs, contracts, and other mechanisms that support the enterprise data center in making this demonstration".

Four rates the facility may not take. The facility "will not take electric service under" the long-term industrial load rate (except where the designated power supply resource was placed in operation after 1 January 2024 and the rate is at least equivalent to the average industrial rate), certain named Michigan Public Service Commission tariff rates, or — the catch-all —

"A rate that causes residential customers to subsidize the costs incurred to provide electric service to the facility."

Municipal water, from a system with room. On being placed in service the facility "will use municipal water sourced from a municipal water system that has available capacity to serve the facility", certified to the Strategic Fund.

Put beside Ohio, where H.B. 646 would propose requiring a 250 MW campus to self-generate or sign a fifteen-year PPA (discussed here), Michigan has already legislated the harder version: 90% clean energy procurement, a bar on cost-shifting rates, and a water-capacity test. For an investor this converts the power constraint and behind-the-meter power from operating questions into eligibility questions. A Michigan project that cannot show 90% clean energy procurement does not have the exemption, whatever else is true about it.

You cannot take the property tax abatement as well

Condition (vi) is the one that should change how a Michigan model is built. The facility "does not receive and, through the applicable date, will not receive any state or local property tax benefit" — the statute names the general property tax act, the Michigan renaissance zone act and 1974 PA 198 — where "property tax benefits" means "any benefits that reduce the property tax burden on the facility for purposes of encouraging economic development, such as property tax exemptions, millage rate or valuation reductions, and property tax capture".

There is one way through, and it is political rather than administrative: the condition "does not apply if the governing body of each local unit of government affected by the property tax benefit approves the receipt of the property tax benefit by resolution". Each city, village, township and county affected.

So in Michigan the sales tax exemption and the property tax abatement are mutually exclusive by default, and stacking them requires every affected council to vote for it. Texas does something narrower — its exemption excludes a data center holding certain Chapter 313 appraised-value agreements — but Michigan's bar is general.

A projection that carries both benefits is therefore carrying an assumption about local politics. Ask for the resolutions.

The repayment: one party hands back everyone's savings, with interest

If the Strategic Fund determines a facility no longer meets the definition, it gives 60 to 180 days' written notice and an opportunity to demonstrate otherwise. During that period "all persons must cease claiming a tax exemption" — the benefit stops before the question is decided.

If the certificate is then revoked:

• within 10 years of issuance, the former qualified entity pays "an amount equal to the entire amount of the tax exemptions stemming from the certificate that have been received under subsection (4) by all persons, plus interest … calculated from January 1 of the year the exemption was received";
• after 10 years, the same, "unless the Michigan strategic fund determines, pursuant to published guidelines, that a lesser amount, but not less than … 50%", is appropriate.

"By all persons" is the phrase to sit with. The exemption is claimed by the qualified entity, by its affiliates, and by the construction contractors who buy equipment to affix to the building. On revocation, the certificate holder repays the lot, with interest running from the start of each year in which any of it was received. Contractors who claimed it must file an annual summary report to the certificate holder and keep their invoices for four years — which is how the number gets assembled.

Across the six states, the recapture designs now look like this:

Who bears that — the issuer, the sponsor, or the investors? In Michigan the number is not even the sponsor's own tax saving. It is the sum of its own, its affiliates' and its builders'. The question belongs in the subscription documents. The full list is in questions to ask a sponsor.

Two dates that bound the whole thing

No new certificates after 31 December 2029. The Strategic Fund "shall not issue any new certificates … after December 31, 2029", though existing certificates are unaffected. That is the tightest application window of the five states — Arizona accepts applications until 2033, Virginia's programme runs to 2035, Georgia's to 2031, and Texas publishes no expiry.

And the figures are confidential. Except for sending copies of certificates and reports to the Department of Treasury, the Strategic Fund "shall not disclose any information that is not aggregated or any information that could be used to identify a specific person or data center". So unlike Virginia — which publishes an annual and biennial aggregate with a return-on-investment analysis — you cannot look up what a named Michigan facility received. If you want that number, the sponsor is the only source, which is a reason to ask for it in writing.

Seven checks on a Michigan project

1. Which exemption — the older qualified data center one, or an enterprise data center certificate? They have different conditions entirely.
2. Has the Strategic Fund issued a certificate, is it in good standing, and what time frame does it specify for meeting the criteria (six years at most)?
3. Is the $250 million incremental? If the sponsor or its affiliates already hold capital in Michigan, only the increase counts.
4. Can the project show clean energy procurement equal to 90% of forecast usage, and by which of the three routes? If it is a long-term utility contract, does it ensure no costs to serve are passed to other customers?
5. Is the water municipal, and does that system have available capacity?
6. Does the model also assume a property tax abatement? If so, has every affected local governing body passed a resolution — and can you see them?
7. Who bears a repayment of all persons' exemptions plus interest, and does the sponsor understand that the figure includes its contractors' savings?

Next: Arizona, which asks for no jobs at all, and the six states side by side; Ohio, where the percentage and term are negotiated; Texas, where only the state share is exempt and colocation is barred; Virginia, the largest programme; and Georgia, the lowest floor.

For the engineering of the clean-energy and water questions this statute turns into eligibility tests, the free vendor-neutral reference is *The Definitive Guide to AI Data Centers*, chapter 3.10. They cover how it is built; we cover whether to put money into it.

Nothing here is investment advice, and nothing here is tax advice. See how this site is funded.