Oregon Data Center Tax Breaks: Enterprise Zones, SIP, and HB 3546

Oregon data center tax breaks come in three stacking property tax programs plus a built-in sales tax advantage. A standard enterprise zone exemption wipes out property tax on new equipment and improvements for three to five years. A long-term rural enterprise zone extends that to seven or fifteen years. The Strategic Investment Program caps the taxable value of very large projects for fifteen years. And because Oregon has no general sales or use tax, every server, cooling unit, and generator avoids the sales tax that the same purchase would trigger in most other states.

No State Sales Tax on Equipment

Oregon is one of a handful of states with no general sales or use tax. For a data center spending tens of millions on servers, networking hardware, and cooling infrastructure, the savings land on every purchase automatically. There is no application, no approval, and no annual filing tied to this benefit.

Standard Enterprise Zone Exemption (Three to Five Years)

Local governments across Oregon designate enterprise zones to attract industrial investment. A data center located inside a zone, and properly authorized before work begins, pays zero local property tax on qualifying new property for three consecutive years. Qualifying property includes machinery, equipment, and site improvements. For additions or modifications to an existing structure, the exemption covers only the increase in assessed value attributable to the new work.¹

The exemption stretches to five years if the business and the local zone sponsor sign a written agreement before authorization. The extended deal requires compensating all new employees at an average of at least 150 percent of the county’s average annual wage during each year of the exemption. In qualified rural counties, that threshold drops to 130 percent. The zone sponsor can attach other conditions on top.² During the two extra years, the business also owes a school support fee to help offset lost revenue to local districts.

Even the base three-year exemption carries conditions. The data center must increase its workforce in the zone by the greater of one new full-time job or 10 percent above its prior staffing level, and maintain that increase throughout the exemption.³ It must also enter a first-source hiring agreement, which gives local job-training programs first access to open positions.¹

Long-Term Rural Enterprise Zone (Seven to Fifteen Years)

A rural enterprise zone unlocks a far longer exemption. Under ORS 285C.403 through 285C.420, the property tax exemption runs between seven and fifteen consecutive years, with the exact length set by written agreement between the zone sponsor and the business.⁴ This is the longest single-facility property tax exemption Oregon offers.

The requirements tighten accordingly. All new employees must be compensated at an average of at least 150 percent of the county’s average annual wage for each year the exemption is active. The company has to maintain the minimum staffing levels set in the agreement and pay a school support fee. Fulfillment centers are explicitly excluded, but data processing facilities are eligible.⁴

Strategic Investment Program (Fifteen-Year Cap)

The Strategic Investment Program is built for the largest projects. Rather than fully exempting property, SIP caps the taxable value of the project for fifteen years. Everything above the cap is exempt, and property tax is paid only on the capped portion.⁵ For a billion-dollar campus, the savings are substantial.

The cap depends on location and project size:

Urban projects: taxable portion is $100 million, adjusted annually for inflation since 2024 using the Consumer Price Index for the West Region.⁵
Rural projects up to $500 million: taxable portion is $40 million.
Rural projects between $500 million and $1 billion: taxable portion is $75 million.
Rural projects over $1 billion: taxable portion is $150 million.

A “rural area” here means entirely outside the urban growth boundary of any city with a population of 40,000 or more.⁶

Community Service Fee

SIP participants pay a community service fee each year equal to 25 percent of that year’s property tax savings. The fee is capped at a base of $3 million per year, adjusted for inflation. For the 2026–2027 property tax year, the cap is $3.167 million.⁷ The county collects the fee and distributes it to local taxing districts under terms negotiated in the project agreement.⁸ Missing a community service fee payment revokes the entire exemption.⁵

How to Apply and Keep the Exemption

Timing controls everything. The authorization application must reach the local zone manager before the business breaks ground, begins construction, installs equipment, or hires the employees it plans to count toward the employment requirement.⁹ Starting work before authorization is the single most common way companies lose eligibility. Late filing is allowed only if the Department of Revenue grants a waiver or an administrative rule specifically permits it.

Form OR-EZ-AUTH asks for a description of current and proposed operations in the zone, a description and estimated value of every piece of qualifying property planned, average employee count over the previous twelve months with estimated new hires, and written commitments to meet qualification requirements, first-source hiring, and any extra conditions the zone sponsor has set.⁹

If no exemption claim is filed within two calendar years of authorization, the business must renew the authorization by April 1 to keep it alive.³ Once the qualifying property is in place, an annual exemption claim goes to the county assessor by April 1, with the same deadline every year of the exemption.¹⁰ The assessor verifies that equipment is still in use, employment levels have held, and wage and hiring commitments remain satisfied.

Clawbacks and the 20 Percent Penalty

Oregon does not quietly phase out benefits when a company falls short. If a disqualifying event occurs, the business must notify the county assessor and the zone sponsor in writing by July 1 following the assessment year in which the exemption was claimed.¹¹ Disqualifying events include selling or moving exempt property out of the zone, a substantial curtailment of operations, failure to maintain employment or wage levels, and using exempt property for ineligible activities.

After disqualification, the assessor calculates the full property tax that would have been owed for every exempt year and adds it to the current tax roll. If the business failed to self-report on time, the assessor adds a penalty of 20 percent of the total clawback amount.¹¹ For a large facility, that penalty alone can run into the millions. Self-reporting immediately is cheaper than being caught.

Under the long-term rural program, the clawback runs the full taxes that would have been due for each exempt year, capped at ten years of back taxes even if the exemption ran longer.¹²

Electricity Costs Under HB 3546

Tax breaks are not the only line on the ledger. In 2025, the Oregon legislature passed HB 3546, directing the Oregon Public Utility Commission to create a separate service classification for large energy use facilities.¹³ Any tariff for this class must allocate the cost of serving these large users to the facilities themselves and shield residential and small-business ratepayers from absorbing the infrastructure costs. Large energy users must sign contracts of at least ten years committing to pay for the energy and transmission capacity they consume.

The law covers data centers and other heavy users served by Oregon’s investor-owned utilities, including Portland General Electric, Pacific Power, and Idaho Power. It took effect immediately as an emergency measure and sunsets on January 2, 2035.¹³ This is not a tax, but it changes the economics: data centers can no longer spread transmission infrastructure costs across the broader ratepayer base, and the ten-year minimum commitment should be weighed alongside the exemption timelines when choosing a program.

1
Oregon Public Law. Oregon Code 285C.175 – Enterprise Zone Exemption Requirements Duration
2
Oregon State Legislature. Oregon Revised Statutes Chapter 285C – Section 285C.160
3
Oregon Department of Revenue. Form OR-EZ-AUTH – Oregon Enterprise Zone Authorization Application
4
Oregon State Legislature. Oregon Revised Statutes Chapter 285C – Section 285C.403
5
Oregon State Legislature. Oregon Code 307.123 – Property of Strategic Investment Program Eligible Projects Rules
6
Oregon Public Law. Oregon Code 285C.600 – Definitions for ORS 285C.600 to 285C.635
7
Business Oregon. Strategic Investment Program
8
Oregon Public Law. Oregon Code 285C.609 – Request by County Local Negotiation Training
9
Oregon Public Law. Oregon Code 285C.140 – Application for Authorization Contents Filing Fee
10
Oregon Business Development Department. Oregon Tax Incentives Standard Enterprise Zone Annual Processes
11
Oregon Public Law. Oregon Code 285C.240 – Disqualification Notice and Procedures In Lieu Payments and Additional Taxes Penalty Use of Moneys
12
Oregon State Legislature. Oregon Revised Statutes Chapter 285C – Section 285C.420
13
Oregon State Legislature. HB3546 2025 Regular Session