How We Rate Sportsbooks, DFS Apps & Prediction Markets
First-Hand Testing Notice
Every operator covered by a rating is reviewed by a member of our staff who has funded a real-money account, placed real wagers or entries, and requested at least one real withdrawal. We do not score operators we have not used ourselves.
We have one goal: helping bettors and traders find safe, fair, and reliable places to play across legal U.S. sports betting, daily fantasy sports (DFS), and prediction markets. Our experts continuously review, test, and rank the most popular regulated operators available to U.S. players.
Part of these reviews includes a rating, out of 10, that tracks the factors that matter most across all three verticals: getting paid, getting fair prices and fair settlement, the depth of the product, and the strength of the license behind it. This is a proprietary, weighted rating system designed to help separate good operators from the very best options available. This rating out of 10 is called the VI Trust Rating.
In this guide, you can learn exactly how we review, test, and rate legal sportsbooks, DFS operators, and prediction market platforms.
VegasInsider's authority comes from its odds and lines architecture. Users come to VI because they trust that the numbers are right and the coverage is deep. That same logic applies to operator recommendations: a transparent rating methodology extends that credibility from odds and lines to the platforms we recommend — and gives readers a reason to trust our scores that no competitor currently offers.
What It Takes To Be Featured On VegasInsider
At VegasInsider, we aim to help players wager and trade responsibly and safely. That is why every real-money operator featured on our site must go through a detailed, hands-on review before being recommended.
During our reviews, we evaluate several key areas including:
- Payout reliability
- Odds value and settlement integrity
- Market and product depth
- Licensing and regulatory compliance
- Promotion and KYC transparency
- Customer support quality
- Responsible gambling tools
Once an operator goes through our review process, we calculate its rating. The higher the score, the more confidence we have in recommending that operator. If an operator fails to meet our standards, raises legal concerns, or appears unreliable, we do not recommend it — regardless of any commercial relationship.
Why This Vertical Needs Its Own Framework
Sportsbooks, DFS apps, and prediction markets share many trust fundamentals with online casinos — you still need to get paid, you still need a real license, you still need responsive support. But the product is fundamentally different. There is no RNG or RTP to certify. Instead, the integrity question becomes: are the prices fair, are bets and entries settled correctly, and are winning customers treated the same as losing ones?
The regulatory picture also splits three ways, which is why our Licensing category uses vertical-specific scoring bands:
| Vertical | Primary Regulator | What "Licensed" Means |
| Sportsbook | State gaming regulators (e.g., NJ DGE, PA GCB, MI GCB) and tribal gaming authorities | A market-access license in each state where the book operates |
| Daily Fantasy Sports | State-by-state patchwork; some states license/register DFS, others restrict or prohibit certain formats | Operating a legal DFS format under each state's rules — including whether "against-the-house" pick'em is permitted |
| Prediction Markets | Federal — the Commodity Futures Trading Commission (CFTC), via a registered Designated Contract Market (DCM) | Listing event contracts on a CFTC-registered exchange, with state legality currently being litigated |
We treat these as distinct regulatory regimes rather than forcing them onto a single ladder. A CFTC-registered prediction market is not "unlicensed" simply because it lacks a state gaming license — but a sportsbook operating in a state without a market-access license absolutely is.
How Our Rating System Works
Every operator receives a rating ranging from 0 to 10, calculated using a weighted system across key evaluation categories that are specific to each vertical. Each category score is based on sub-criteria assessed against defined standards and thresholds.
Where significant issues or hard failures are identified, penalty multipliers may be applied before the final score is calculated. Operators that excel in specific areas can receive bonus multipliers that help improve their ranking among our recommended sites.
Each vertical is evaluated using its own framework, reflecting the distinct product, regulatory, and trust characteristics of that market. VegasInsider's weights are calibrated for our audience: destination users who come for odds, lines, and data, and who prioritize getting paid reliably and finding broad coverage of the sports they follow.
| Category | Sportsbooks | DFS | Prediction Markets |
| Payout Reliability | 25% | 22% | 14% |
| Odds Quality & Line Competitiveness | 17% | — | — |
| Market Depth & Bet Variety | 17% | — | — |
| Licensing & Compliance | 15% | 15% | — |
| Account Policy & Bettor Treatment | 7% | — | — |
| Contest Structure & Fairness | — | 20% | — |
| Product Quality & Tools | — | 15% | — |
| Slate Variety & Market Coverage | — | 11% | — |
| Market Quality & Liquidity | — | — | 17% |
| Resolution Accuracy & Dispute History | — | — | 20% |
| Regulatory Status & Legal Clarity | — | — | 17% |
| Market Variety vs. Depth | — | — | 10% |
| Fund Segregation & Safety | — | — | 9% |
| Bonus & Promo Transparency | 7% | 7% | 3% |
| Platform & UX Quality | 5% | 5% | 5% |
| Responsible Gambling Tools | 4% | 4% | 4% |
| Customer Support Quality | 3% | 3% | 3% |
The full methodology for each vertical — including sub-criteria, scoring bands, penalty triggers, and worked examples — is detailed on its own page: How We Rate Sportsbooks, How We Rate DFS Apps, and How We Rate Prediction Markets.
How We Calculate The VI Trust Rating
We calculate every rating using a transparent formula:
Σ (Dimension Weight × (Dimension Sub-score × Multiplier))
- Sub-Criterion Scoring. Each category contains between two and four sub-criteria. Every sub-criterion is scored from 0 to 10 using predefined benchmarks and thresholds. The dimension score is the weighted average of its sub-criteria.
- Penalty and Bonus Multipliers. After a dimension score is calculated, additional multipliers may be applied based on documented issues or exceptional performance. Multipliers are applied to the relevant dimension or sub-criterion score rather than the final overall score, keeping their impact proportional to category weighting.
- Final Weighted Score. Adjusted dimension scores are multiplied by their category weights and combined to produce the final rating out of 10.
Penalty multipliers are capped with a minimum floor of 0.5x for any single trigger. The sole exception is the 0.0x hard failure for operating with no verifiable license.
Bonus multipliers are capped at 1.15x to prevent score inflation.
All final scores are rounded to one decimal place for display.
Rating Interpretation
| Score Range | Rating Label | What It Means |
| 9.0 – 10.0 | Outstanding | Exceptional across all dimensions with no documented failures. Recommended without reservation. |
| 7.5 – 8.9 | Strong | Above-average performance with only minor weaknesses. |
| 6.0 – 7.4 | Good | Solid overall with some areas to improve. |
| 4.5 – 5.9 | Fair | Noticeable weaknesses; review details carefully before depositing. |
| 3.0 – 4.4 | Weak | Significant issues across important categories. |
| Below 3.0 | Not Recommended | Serious failures confirmed; does not meet minimum standards. |
Review Cadence and Score Updates
All ratings are reviewed on a scheduled basis so they stay accurate.
- Full Re-Score: Conducted annually, or whenever an operator makes significant changes to pricing, market coverage, payment methods, promotions, product formats, or licensing/registration status.
- Penalty Trigger Review: Conducted within 30 days after a documented hard failure appears in verified community reports or regulatory records.
- Accelerated Legal Review (prediction markets and contested DFS formats): Because the legal landscape for CFTC event contracts and against-the-house DFS is actively evolving, affected operators are reviewed on a monthly basis or within 7 days of a material court ruling, injunction, or regulatory action.
- Bonus Multiplier Review: Reviewed quarterly and aligned with ongoing withdrawal- and pricing-testing cycles.
The date of the most recent full review is displayed on every operator review page. If a score changes due to a newly triggered penalty multiplier, the review includes a visible score-update notice explaining what changed and when.
Who Reviews and Scores Operators
Ratings are produced by VegasInsider's editorial and analyst team, not by automated aggregation. Every review carries a byline identifying the staff member(s) who tested the operator, along with their relevant experience covering betting markets, fantasy sports, and prediction markets. Reviews involving payouts, pricing, or legal status are fact-checked by a second team member before publication.
Our reviewers bring first-hand betting and trading experience, follow regulatory developments across all 50 states and the CFTC, and document their testing with dated notes and screenshots retained for verification. Where a reviewer holds any position relevant to an operator (for example, an open account balance), it is disclosed.
E-E-A-T at a glance:
- Experience — we fund real accounts and place real bets, entries, and trades.
- Expertise — named, credentialed reviewers and a documented methodology.
- Authoritativeness — transparent criteria, cited regulatory sources, and consistent application across every operator.
- Trust — clear editorial independence, affiliate disclosure, correction policy, dated reviews, and prominent responsible gambling resources.
Commercial Relationships and Editorial Independence
VegasInsider may earn revenue when readers register at operators through affiliate links featured on our website. This relationship is disclosed throughout our review pages.
However, commercial relationships do not influence ratings in any way. Every operator is evaluated using the exact same criteria, thresholds, and multiplier system regardless of whether a commercial partnership exists. Operators without affiliate relationships are reviewed and scored using the same standards. If an operator performs poorly, that score and the supporting findings are still published.
The rating penalty system is specifically designed to prevent operators with documented hard failures, regulatory issues, or major trust concerns from achieving high overall scores — regardless of any commercial relationship.
For questions, feedback, or methodology inquiries, contact our editorial team. We review all feedback regarding the rating system and update our criteria whenever the sports betting, DFS, or prediction market landscape materially changes.