Taking a price feels like finishing a small piece of business. You have chosen the horse, agreed the odds and received the ticket. Then it wins at a bigger starting price and the return is not what you expected.
The missing question is often whether the bet had Best Odds Guaranteed.
Fixed odds use the price accepted on your receipt, subject to relevant adjustments. Starting Price, or SP, uses the returned price at the off. Best Odds Guaranteed, or BOG, is a qualifying concession that compares your taken price with SP and pays the better return under its terms.
It does not promise the highest price offered by every bookmaker. It does not remove Rule 4, create a winning bet or automatically apply to every account and racing market.
Three ways to settle the same winner
Suppose you stake £10 to win at 4/1. The following figures are worked illustrations, not actual bets, and assume no deductions, dead heat or promotional cap.
| Price returned at the off | Fixed 4/1, without BOG | Bet placed at SP | Qualifying 4/1 bet with BOG |
|---|---|---|---|
| 2/1 SP | £50 | £30 | £50 |
| 4/1 SP | £50 | £50 | £50 |
| 6/1 SP | £50 | £70 | £70 |
| 8/1 SP | £50 | £90 | £90 |
All figures include the £10 stake. At 6/1 SP, the £70 return comprises £60 profit and the stake. If the horse loses, all three ordinary win bets lose their £10.
Illustration, not historical performance. BOG follows the larger eligible return; it cannot make a losing selection win.
The table shows why a bare price comparison is incomplete. A fixed price may beat the eventual SP, fall short of it or match it. The concession changes the settlement only if this particular bet qualifies.
What Starting Price actually represents
For British racing, the industry SP is a regulated return derived from a sample of market prices at the start. It is not simply the last number you happened to see on your bookmaker's screen, nor an average of every price offered throughout the morning.
The Starting Price Regulatory Commission's rules, updated in July 2026, use qualifying bookmaker price feeds and a race-by-race sample. Descriptions suggesting that modern British SP is determined only by bookmakers standing at the course are out of date.
Choosing SP means accepting a price you do not yet know. A horse shown at 5/1 when you place an SP bet could return shorter or longer. The provisional display is not a fixed-odds receipt.
There is another distinction: a shorter price is not proof that a horse must run better. A market can move because of new information, trading decisions or demand. The price tells you what was available; the result remains uncertain.
Best Odds Guaranteed has an eligibility test
The words look universal. The conditions are not.
We checked the following operators' published UK help pages on 20 October 2026. This is a rules snapshot, not an endorsement or a claim that every customer will qualify. Check your account and accepted receipt before relying on a concession.
| Operator | Stated race-day timing | Important eligibility distinction |
|---|---|---|
| Bet365 | From 08:00 UK time | Applicable UK and Irish fixed-odds racing markets; confirmation is shown on the bet receipt |
| Sky Bet | From 09:00 until the off | Requires qualifying Sky Bet Club status from the previous week; not every account or promotional market qualifies |
| William Hill | From 08:00 until the off | Invite-only and opt-in conditions; the offer described is for eligible online and mobile bets, not shop or telephone bets |
An evening-before price can therefore be a genuine fixed price without carrying the next morning's concession. A bet just before the qualifying time can also be different from one placed just after it.
Sky Bet's Club status involves separate qualifying conditions. Do not place additional bets merely to obtain a promotion. The cost and risk of that extra gambling can exceed the benefit you hoped to receive.
Timing is only one check. Ante-post, pool betting, adjusted each-way terms, extra-place offers and other specials can be excluded. The exact list differs between operators. A familiar badge on the racing homepage is weaker evidence than the terms attached to your own bet.
For future-race participation protection, see ante-post betting and Non-Runner No Bet. NRNB answers what happens if the horse does not run. BOG answers a different question about the price of a qualifying bet.
Rule 4 can change the comparison
A withdrawn rival may reduce the potential winnings on an earlier fixed-price bet. That adjustment is normally made to the profit, not to the whole return including your stake.
Take an invented £10 win bet at 6/1. Its original potential profit is £60. Suppose a valid 20p-in-the-pound Rule 4 deduction applies:
- Original profit: £60.
- Deduction: £12.
- Revised profit: £48.
- Return including stake: £58.
That revised return is equivalent to decimal odds of 5.8, or 4.8/1. The original 6/1 displayed on the receipt is no longer the whole calculation.
Bet365's BOG wording explicitly compares SP with the revised odds after Rule 4. Under that stated comparison, if this horse wins at 5/1 SP, the £60 SP return beats the £58 adjusted fixed-price return, even though 5/1 is shorter than the original 6/1.
| Illustrative winner after the 20p deduction | Adjusted fixed-price return | SP return | Return under that eligible comparison |
|---|---|---|---|
| 4/1 SP | £58 | £50 | £58 |
| 5/1 SP | £58 | £60 | £60 |
| 7/1 SP | £58 | £80 | £80 |
This is an example of the cited operator wording, not a substitute for every bookmaker's rules. Do not simply choose the larger original odds and then apply deductions in whichever order gives the biggest number.
Our Rule 4 calculator can check the deduction arithmetic. The accompanying Rule 4 guide explains why a withdrawal changes a market and which details to retain.
Boosts and extra places are separate products
An enhanced price, extra place and BOG may sound like three benefits that should stack. They do not necessarily combine.
Bet365 and William Hill describe a winnings-boost comparison between the boosted taken-price return and the unboosted SP return. You should not assume the original boost is applied again to a larger SP.
Extra-place and adjusted-place products can have their own exclusions. Sky Bet's published conditions exclude specified extra-place and promotional races from BOG. Other operators use their own lists.
For each-way bets, compare the actual place fraction and number of places as well as the win odds. A bigger win price with fewer paid places is not the same contract as a shorter price with extra places. Our each-way betting guide separates the two stakes and their returns.
In a multiple, qualifying BOG treatment is normally considered on the eligible legs under the operator's terms. One eligible race does not automatically make every other selection eligible. Special packaged multiples and enhanced accumulators can have different conditions.
Is Betfair Starting Price the same thing?
No. Betfair Starting Price, or BSP, is an exchange price, calculated by balancing backing and laying demand when the market is reconciled at the off. It is not the industry SP used by a bookmaker's BOG promise.
An exchange comparison also needs the commission applicable to your account and net market winnings. Quoting a larger decimal price without considering that charge can exaggerate the difference.
For a simple illustration, a single £10 winning back bet at BSP 6.0 produces £50 profit before commission. At an assumed 2% commission on that net market profit, £1 is charged and the total returned is £59.
A bookmaker return at 5/1 would be £60. The example does not claim that 2% is your rate or that either product usually wins the comparison. It shows why like-for-like means comparing money returned under the actual terms, not two labels.
If you have several exchange bets in the same market, the net-market calculation can differ from charging each winner separately. Start with our betting exchange guide and the account's commission rules before comparing results.
When the payout looks wrong
Begin with the receipt, not the price you remember seeing on television.
Check whether you took a fixed price or selected SP. Then check the accepted time, whether BOG was confirmed, the market type and account eligibility. Record the returned SP and any withdrawal, deduction or dead-heat adjustment.
A useful settlement question is specific: “My receipt shows this price, this time and this eligibility; the official SP was this; why was the bet settled at that return?” It gives customer support something to investigate.
If the reply does not explain the calculation, ask for the exact rule and a written breakdown. Our guide to challenging a wrongly settled bet covers the evidence and complaint route. Keep the bet reference and relevant terms, and avoid replacing missing facts with a screenshot of a different customer's offer.
The sensible comparison
Fixed odds give you an accepted price, with the relevant settlement adjustments. SP leaves the price until the start. Eligible BOG can protect against a later drift by comparing specified returns, but it is a concession with conditions rather than a universal service.
The practical question is therefore not “Does this bookmaker do BOG?” It is “Does this bet qualify, and what will be compared?”
Answer that before betting and the result of the calculation should be easier to follow afterwards. Whether the selection itself is worth backing remains a separate judgement.
18+. The examples explain prices and settlement, not a method of guaranteed profit. Never bet more to qualify for an offer, never chase losses, and only use money you can afford to lose. Our responsible-gambling page has further information.