Welcome to Beat The Bookie

Promo & bonus bet conversion scanner

🎁 Bonus Basher

Scan AU bookmakers to find the best conversion rates for your bonus bets.

Betfair lay or bookie-vs-bookie • All sports

📒 Bet Tracker

Log promos, hedges and per-bookie balances in a private local file - with P/L charts and CSV export.

One-time key unlock • Your data never leaves your device

How To Promo Bash

A practical guide to hedging bonus bets - what it is, what you need, and how the scanner works

💡 What Is Promo Bashing?

Australian bookmakers hand out bonus bets and promo offers to attract new sign-ups and keep existing customers betting. Promo bashing (also called bonus bet conversion) is a hedging technique that aims to retain part of a bonus bet's value as withdrawable cash - by placing an opposing bet so that every outcome is covered. How much (if any) of the value you retain depends on the odds available and on both bets being placed successfully.

There are two ways to hedge:

vs Betfair (Lay Betting)

You place the bonus bet on a bookmaker (back bet), then lay the same outcome on Betfair Exchange. If your selection wins, the bookmaker pays out but Betfair takes your liability. If it loses, Betfair pays you. If both bets are matched at the odds shown, each outcome leaves you with a similar cash position - but odds can move between placing the two bets, so the final result can differ from the estimate.

Bookie vs Bookie

You place the bonus bet on one bookmaker, then bet on the opposite outcome at a second bookmaker. No exchange account needed, but conversion rates are usually lower.

✅ What You Need

We're an analytics tool. The bookmaker names above and any links to them are plain links - we don't earn referral commissions from bookmakers.

📖 Key Terms

Back Bet Your bonus bet placed on the bookmaker (betting FOR an outcome to win) Lay Bet Betting AGAINST an outcome on Betfair Exchange Hedge Bet The opposing bet that covers the other outcome (either a lay on Betfair or a bet on a second bookmaker) Lay Stake How much to wager on Betfair for the lay bet Liability The amount held in your Betfair account to cover the lay bet if it loses - this is returned if your lay wins Conversion % The estimated percentage of your bonus bet retained as real cash if both bets are matched at the odds shown (e.g. 70% conversion on a $100 bonus ≈ $70) SNR Stake Not Returned - the most common type. You only receive the profit, not the original bonus stake SR Stake Returned - you receive both the stake and the profit. Higher conversion rates Commission Betfair takes a % cut of your winning lay bets (usually 5%)

🚀 Step-by-Step: Using the Bonus Basher

  1. 1Open the Bonus Basher - Click "Bonus Basher!" in the sidebar or from the card above.
  2. 2Choose your hedge mode - Select "vs Betfair" for the best conversion rates (recommended), or "Bookie vs Bookie" if you don't have a Betfair account.
  3. 3Pick a sport - Select a specific sport, or choose "All Sports" to scan everything at once. More sports = more opportunities but uses more API quota.
  4. 4Select bookmakers - Choose which bookmaker your bonus bet is on as the Back Bookmaker, or leave as "All" to see every option. In Bookie vs Bookie mode, also pick your hedge bookmaker.
  5. 5Enter your bonus amount - Type in the value of your bonus bet (e.g. $100).
  6. 6Set your Betfair commission - Default is 5%. Check your Betfair account for your actual rate (it may be lower if you have discount rates).
  7. 7Select your bonus type - Pick SNR (Stake Not Returned) or SR (Stake Returned). If you're unsure, it's almost always SNR.
  8. 8Hit "Scan Now" - The tool fetches live odds and calculates the best conversion opportunities. Results are sorted by conversion rate - best deals at the top.
  9. 9Read the card - Each result shows the back bookmaker and odds, where to lay/hedge, the calculated stake and liability, and the estimated return if both bets are matched at those odds.
  10. 10Place both bets FAST - Odds move quickly. Open the bookmaker and Betfair side by side. Place the back bet first (bookmaker), then immediately place the lay bet (Betfair). Double-check the lay stake and odds match.
  11. 11Wait for the event to settle - Once the game finishes, one side pays out and the other side loses. If both bets were matched as planned, the net position should be close to the estimate shown.

📝 Worked Example

You have a $100 SNR bonus bet on Sportsbet and a Betfair account with 5% commission.

The scanner finds:
Melbourne Victory vs Sydney FC

Back: Melbourne Victory @ 3.50 on Sportsbet (bonus bet)
Lay: Melbourne Victory @ 3.60 on Betfair Exchange
Lay Stake: $69.25
Liability: $180.05
Estimated Return: $65.82
Estimated Conversion: 65.8%

What you do:

1. Place the $100 bonus bet on Melbourne Victory at 3.50 on Sportsbet

2. Lay Melbourne Victory on Betfair for $69.25 at 3.60 (you need $180.05 in your Betfair account for liability)

What happens:

If Melbourne Victory wins:
Sportsbet pays you: $100 × (3.50 − 1) = $250 (bonus stake not returned)
Betfair lay loses: −$180.05 (liability)
Net: $250 − $180.05 = +$69.95

If Melbourne Victory loses:
Sportsbet: $0 (bonus bet lost - no real money lost)
Betfair lay wins: $69.25 × (1 − 0.05) = +$65.79
Net: +$65.79

In this hypothetical example, both outcomes would leave roughly $66–$70 in real cash from a $100 bonus bet - but only if both bets are matched at exactly the odds shown. Real odds move constantly, so actual results will vary and can be worse than the estimate.

💎 Tips for Better Results

⚠️ Important Warnings

Odds move fast. The odds shown by the scanner are a snapshot. Always verify the current odds on the bookmaker and Betfair before placing your bets. If the odds have changed significantly, rescan.
Read the bonus terms. Some bonuses have minimum odds requirements, specific sport restrictions, or expiry dates. Make sure your bet qualifies before placing it.
Manage your bankroll. You need real money in your Betfair account to cover the lay liability. Make sure you have enough before placing the back bet.
Not risk-free - real money can be lost. Hedging is designed to reduce the variance of a bonus bet, not to eliminate risk, and no return is ever guaranteed. Odds move between placing your back and lay, exchange liquidity varies, bets can be voided or palped, accounts get limited or closed, and execution mistakes cost real money. All figures on this site are estimates only - past results don't predict future results, and you should never stake money you can't afford to lose.
⚖️ Disclaimer

Beat The Bookie is an informational tool only. Nothing on this site constitutes financial advice, gambling advice, or a recommendation or inducement to place any bet or open any betting account. All calculations are estimates based on third-party odds data which may be outdated or inaccurate at the time of use; returns are never guaranteed. Users are solely responsible for verifying all odds, terms, and conditions before placing any bets. Gambling involves risk - never bet more than you can afford to lose. 18+ only.

Chances are you're about to lose. For free and confidential support, visit Gambling Help Online or call 1800 858 858. You can exclude yourself from all Australian online wagering via BetStop - the National Self-Exclusion Register. By using this tool you acknowledge that Beat The Bookie and its creators accept no liability for any financial losses incurred.
18+ Estimates only - returns aren't guaranteed and betting involves risk. Gamble responsibly.
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