Marathon Bet has the lowest Premier League margins in our record
Published 28 September 2026. Daily match-odds snapshots since March 2026.
Marathon Bet has the lowest average Premier League overround in The Best Betting Odds record, at 103.2%, from 1,978 daily match-odds snapshots since March 2026. Casumo is next at 105.8%. The gap from lowest to highest in this table is 7.3 percentage points.
Overround is the bookmaker's built-in margin: the implied probabilities of every outcome added together. A lower figure means less margin in the match odds. It is not the same as having the best price on every selection.
| Rank | Bookmaker | Avg overround | Best-price share | Snapshots |
|---|---|---|---|---|
| 1 | Marathon Bet | 103.2% | 0.0% | 1,978 |
| 2 | Casumo | 105.8% | 5.0% | 1,783 |
| 3 | Grosvenor Sport | 105.9% | 5.0% | 1,871 |
| 4 | Coral | 106.4% | 7.0% | 1,400 |
| 5 | Unibet | 106.6% | 2.0% | 3,690 |
| 6 | Ladbrokes | 106.9% | 3.0% | 1,401 |
| 7 | Paddy Power | 107.1% | 4.0% | 1,998 |
| 8 | Bet Victor | 107.3% | 2.0% | 1,588 |
| 9 | Sky Bet | 107.4% | 0.0% | 2,008 |
| 10 | Smarkets | 107.5% | 19.0% | 1,984 |
| 11 | William Hill | 107.7% | 2.0% | 1,987 |
| 12 | LeoVegas | 107.8% | 0.0% | 1,794 |
| 13 | 888sport | 107.9% | 2.0% | 1,994 |
| 14 | Betway | 107.9% | 0.0% | 1,627 |
| 15 | Betfair Exchange | 108.6% | 71.0% | 1,992 |
| 16 | BoyleSports | 109.1% | 0.0% | 1,921 |
| 17 | Virgin Bet | 109.6% | 3.0% | 1,875 |
| 18 | Livescore Bet | 109.7% | 3.0% | 1,868 |
| 19 | Betfair Sportsbook | 110.5% | 3.0% | 1,123 |
How this was measured
Each figure is the average overround on Premier League head-to-head match odds for UK bookmakers, from one snapshot a day since March 2026. A bookmaker is included only when it has at least 100 snapshots. Best-price share is the percentage of those snapshots in which that bookmaker had the highest price. The ranking is calculated before the article is written, and the table is the source of every figure above.
For press and bloggers: you can quote this page with a link to thebestbettingodds.com/stories/uk-epl-margin-2026-09-28. The comparison bookmaker pages are at UK bookmakers.