# Sportsbooks (sportsbooks.ro)

> Independent reviews of licensed online sportsbooks in the UK, the US and Ontario, with odds tools, betting guides and safer-betting help.

Sportsbooks is an independent comparison site; it does not accept bets. Each market page lists only sportsbooks licensed by that market's regulator. Scores out of 10 are given per market and built from public, sourced evidence: regulatory record 25%, betting product 25%, app quality 20%, payments & payouts 15%, welcome offer terms 15%. Regulatory record and app quality are calculated from regulator actions since 1 January 2023 and App Store ratings; the other criteria are editorial scores with written reasons. Ontario has no offer score. Facts checked 2026-10-27. The site has not opened accounts or placed bets with these sportsbooks.

## Markets
- [Best UK betting sites in 2026](https://sportsbooks.ro/uk/): regulator UK Gambling Commission; minimum age 18+; tax on winnings: None for players. Operators pay the betting duty. Help: National Gambling Helpline (GamCare), 0808 8020 133. Sportsbooks listed: bet365 (8.8/10), Sky Bet (8.4/10), Betfair (8.0/10), Betway (7.8/10), Paddy Power (7.8/10), William Hill (7.2/10).
- [Best online sportsbooks in the US](https://sportsbooks.ro/us/): regulator state gaming regulators; minimum age 21+; tax on winnings: Winnings are taxable income under federal law; most states tax them too. Help: 1-800-GAMBLER (National Council on Problem Gambling), 1-800-426-2537. Sportsbooks listed: bet365 (9.1/10), DraftKings (8.5/10), FanDuel (8.5/10), BetMGM (8.3/10), Fanatics Sportsbook (8.3/10), Caesars Sportsbook (8.0/10), theScore Bet (7.9/10).
- [Best Ontario sportsbooks](https://sportsbooks.ro/ontario/): regulator AGCO and iGaming Ontario; minimum age 19+; tax on winnings: Recreational bettors generally pay no tax on winnings. Help: ConnexOntario, 1-866-531-2600. Sportsbooks listed: bet365 (9.2/10), DraftKings (9.2/10), FanDuel (8.9/10), BetMGM (8.5/10), theScore Bet (8.0/10).

## Reviews
- [bet365 review](https://sportsbooks.ro/reviews/bet365/): bet365 is one of the largest online sportsbooks in the world, known for the depth of its in-play markets and its live streaming. Scores: uk 8.8, us 9.1, ontario 9.2.
- [Betfair review](https://sportsbooks.ro/reviews/betfair/): Betfair runs a betting exchange, where bettors back and lay against each other, alongside a fixed-odds sportsbook. Scores: uk 8.0.
- [William Hill review](https://sportsbooks.ro/reviews/william-hill/): William Hill is a long-established UK bookmaker with a high-street shop network and a full online sportsbook. Scores: uk 7.2.
- [Sky Bet review](https://sportsbooks.ro/reviews/sky-bet/): Sky Bet is a UK sportsbook focused on football and racing, known for RequestABet, BuildABet and AccaFreeze. Scores: uk 8.4.
- [Paddy Power review](https://sportsbooks.ro/reviews/paddy-power/): Paddy Power is an Irish-founded bookmaker operating online and in shops across the UK and Ireland. Scores: uk 7.8.
- [Betway review](https://sportsbooks.ro/reviews/betway/): Betway is an international sportsbook owned by Super Group, licensed in the UK through Betway Limited in Malta. Scores: uk 7.8.
- [FanDuel review](https://sportsbooks.ro/reviews/fanduel/): FanDuel is one of the two largest US sportsbooks and also operates in Ontario. Scores: us 8.5, ontario 8.9.
- [DraftKings review](https://sportsbooks.ro/reviews/draftkings/): DraftKings grew from daily fantasy sports into one of the two largest US sportsbooks and also operates in Ontario. Scores: us 8.5, ontario 9.2.
- [BetMGM review](https://sportsbooks.ro/reviews/betmgm/): BetMGM is the online arm of MGM Resorts, run as a joint venture with Entain, with a strong online casino alongside its sportsbook. Scores: us 8.3, ontario 8.5.
- [Fanatics Sportsbook review](https://sportsbooks.ro/reviews/fanatics/): Fanatics Sportsbook ties betting to the Fanatics merchandise business through FanCash rewards. Scores: us 8.3.
- [Caesars Sportsbook review](https://sportsbooks.ro/reviews/caesars/): Caesars Sportsbook links online betting to the Caesars Rewards program used across Caesars casinos and hotels. Scores: us 8.0.
- [theScore Bet review](https://sportsbooks.ro/reviews/thescore-bet/): theScore Bet pairs a sportsbook with theScore sports news and scores app. It operates in Ontario and, since December 2025, in 21 US states. Scores: us 7.9, ontario 8.0.

## Guides and tools
- [How betting odds work](https://sportsbooks.ro/guides/how-betting-odds-work/): Decimal, fractional and American odds explained with worked examples, plus how to turn any price into the probability it implies.
- [What the bookmaker margin costs you](https://sportsbooks.ro/guides/bookmaker-margin/): How to calculate a sportsbook's margin from its prices, what a typical margin is, and why it matters more than any bonus.
- [Welcome offers explained](https://sportsbooks.ro/guides/welcome-offers-explained/): Free bets, deposit matches and bet-and-get offers explained, with the terms that decide what an offer is really worth.
- [Odds converter, margin and accumulator calculator](https://sportsbooks.ro/odds-calculator/)

## About
- [How we rate sportsbooks](https://sportsbooks.ro/how-we-rate/)
- [Editorial policy and advertising disclosure](https://sportsbooks.ro/editorial-policy/)
- [Responsible gambling](https://sportsbooks.ro/responsible-gambling/)
- [Sitemap](https://sportsbooks.ro/sitemap-index.xml)