How Tribal Casino Giving and Compact Costs Work: Wildhorse Foundation Explained
Revenue sharing, charitable set-asides and IGRA net-revenue rules are three different things. Oregon's Wildhorse shows each.
When a tribal casino announces an expansion, the headline number is usually the construction budget. A less visible number often matters as much to the surrounding community: the share of gaming revenue the tribe sets aside for charitable giving, infrastructure and public benefit. In Oregon, the Confederated Tribes of the Umatilla Indian Reservation provide a clear example through the Wildhorse Foundation, which receives up to 6 percent of gross gaming revenue from slots and table games at Wildhorse Resort & Casino and funds nonprofits and infrastructure. This explainer describes how such set-asides work, where they come from, and how they differ from the payments that flow to states.
Revenue sharing, set-asides and net revenue are different things
Three concepts are often confused. The first is revenue sharing under a tribal-state compact, in which a tribe pays a state or local government a negotiated share of revenue, sometimes in exchange for exclusivity. The second is a voluntary or tribe-defined set-aside, such as a charitable foundation funded by a percentage of revenue. The third is the federal rule on how a tribe may use the net revenues from Class II and Class III gaming. Under IGRA, those net revenues may be used for five purposes, including funding tribal government operations and programs, providing for the general welfare of the tribe and its members, promoting tribal economic development, donating to charitable organizations, and helping fund operations of local government agencies. Our explainer on the five permitted uses of net gaming revenue covers the statute in detail.
A foundation like Wildhorse's falls within the charitable-donation category, and it is the tribe's choice rather than a state mandate. The percentage and the grantmaking priorities are set by tribal leadership, not by Salem.
What Oregon compacts do require
Oregon has nine federally recognized tribes. All but the Burns Paiute Tribe operate a casino; the Burns Paiute closed its Old Camp Casino in 2012 because of its remote location and the difficulty of finding a casino partner and financier. Oregon's compacts have a distinctive feature relevant to community impact: they require tribes to cover the reasonable costs of necessary street, road or highway improvements tied to their gaming facilities. That means a tribe expanding a casino can face a defined obligation to pay for the public infrastructure its project makes necessary.
This differs from models in some other states, where compacts direct money into state funds or local mitigation pools. California's approach, for instance, uses dedicated funds and local mitigation agreements, which we describe in our explainer on local impact mitigation funds in California compacts. The general mechanism, tribal payment in exchange for the right to operate and for offsetting public costs, appears in many forms across the country, and our revenue-sharing explainer sets out the variations.
A compact can require a tribe to pay for the roads its casino needs; a foundation is what a tribe chooses to give beyond that.
The Wildhorse example
Wildhorse announced a $100 million expansion in May 2025 that includes a 10-story, 214-room hotel tower and a 15,000-square-foot convention and event center, taking the property to more than 400 rooms. CEO Gary George framed the investment around consistency: "A consistent, high-quality casino experience is the difference for consumers and the region." The tribe has reinvested in the property every year since 1999, and the expansion is its largest project since a $45 million hotel was completed in October 2011.
The property offers about 1,100 slots, 14 table games, keno, bingo and a poker room, along with a Family FunPlex that includes a bowling alley, arcade, movie theater and food court, and an 18-hole golf course. The tribe could offer sports betting under its compact but has said margins are too small to justify it. For more on the state's tribal landscape, see our Oregon market deep-dive.
Why set-asides matter to the expansion debate
Expansions change the scale of what a foundation can fund. If a set-aside is expressed as a percentage of gross gaming revenue, growth in the gaming floor translates directly into growth in grants, though the Wildhorse expansion is weighted toward hospitality and events rather than new devices. Non-gaming revenue from hotel rooms and food may not be subject to the same percentage, which is a question tribes answer in their own governing documents.
The broader picture of what gaming revenue funds in Indian Country, from health care to education to water systems, appears in our analysis of how gaming revenue funds government services, and a comparable community-giving approach is described in our profile of the Navajo Nation Gaming Enterprise.
For readers evaluating a tribal casino's local impact, the useful questions are simple. What does the compact require the tribe to pay? What does the tribe choose to give? And how do those amounts change when the casino grows? The answers vary by state and by tribe, but the framework above is a reliable way to ask them.