California Compact Funds Explained: SDF, RSTF, TNGF, RDF and LCBF
A plain-language guide to the five state-administered funds that appear in California tribal-state gaming compacts, and the legal questions surrounding them.
California's tribal gaming compacts are best known for exclusivity, but they also create a set of state-administered funds that receive payments from tribes. Understanding California compact funds is essential for reading news about revenue sharing, regulatory costs and litigation, because the same handful of acronyms recur in compacts, budget documents and court filings. This explainer defines each fund, describes what it is generally used for and notes where tribes and the state disagree.
The descriptions below are drawn from the compacts as publicly described, state budget materials and the allegations in recent litigation. Specific payment formulas vary by tribe and compact vintage, and readers should consult the compact itself for exact terms.
The Special Distribution Fund
The Special Distribution Fund, or SDF, is the account into which tribes with Class III compacts pay assessments tied to their slot machine operations. The state uses it to pay for regulatory work connected to tribal gaming and for programs related to gambling, such as problem-gambling treatment and public-safety costs in affected communities. Under the federal Indian Gaming Regulatory Act, states may recover the cost of regulating tribal gaming, but they may not tax tribes, which is why the relationship between SDF payments and the state's actual regulatory costs has become a point of dispute. In its pending challenge, the Morongo Band alleges that required SDF contributions exceed the state's reasonable costs; the state has moved to dismiss, as described in our report on the Morongo case.
The Revenue Sharing Trust Fund
The Revenue Sharing Trust Fund, or RSTF, is the best known of the funds. Compact tribes pay into it, and the money is distributed to federally recognized tribes that do not operate Class III gaming or that operate fewer than a set number of machines. The design reflects a policy judgment that the benefits of gaming should reach tribes in remote or less commercially viable locations, and it is explained in detail in our RSTF explainer. Critics, including some paying tribes, argue that payments have grown without a corresponding state concession, while supporters note that the fund provides a baseline of income for tribes that could not otherwise support a casino.
The Tribal Nation Grant Fund
The Tribal Nation Grant Fund, or TNGF, receives money from the RSTF when the trust fund holds more than is needed for its distributions. It is described as funding grants to eligible tribes that do not benefit from Class III gaming at scale. In the Morongo litigation, the band alleges that transfers into the TNGF happen by legislative direction without its consultation and are not directly related to Class III gaming. Those are the band's allegations and have not been resolved by a court.
The Rainy Day Fund and Local Community Benefit Fund
Two further funds appear in newer compacts. The Rainy Day Fund, or RDF, is a reserve funded by tribal payments under newer compacts. As described in the complaint, the Morongo compact requires the band's resort spa to contribute up to $10 million a year, to a total of $100 million. The Local Community Benefit Fund, or LCBF, provides money for local community needs and, as characterized in the complaint, requires payments of between $15 million and $24 million a year depending on the RDF balance, with use of the money subject to state permission. The band argues that these payments are imposed rather than negotiated and not directly related to gaming; the state's position will be set out in its own filings.
Separately from these statewide funds, many compacts require payments to local governments to mitigate the effects of casino operations on roads, public safety and services. Our local impact mitigation explainer covers those arrangements, which differ from the statewide funds in that they are typically negotiated with a specific county or city.
Why the funds are contested
The legal question running through all of these funds is whether a payment is a permissible regulatory assessment or revenue-sharing term supported by a meaningful state concession, or an impermissible tax. Federal courts in California have addressed versions of that question, including the Ninth Circuit's 2010 decision in Rincon Band v. Schwarzenegger, which treated a state's demand for general-fund revenue as evidence of bad faith in the absence of meaningful concessions. More recent compacts reflect that pressure; the revenue-sharing retreat analysis describes how some agreements have shifted away from percentage-based payments.
For tribes, the funds are a cost of doing business in exchange for exclusivity, a point developed in the exclusivity clause explainer. For the state, they underwrite regulation and a statewide distribution system. For observers, the practical tip is to read each reference to a fund in context: the same acronym can describe a modest assessment in an older compact and a substantial obligation in a newer one.
The California state hub lists tribal gaming facilities in the state, and the Legal Guide provides an overview of the federal framework that governs all of these payments.