🧮 Matched Betting Calculator

Turn bookmaker free bets into guaranteed cash — no gambling required

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💡 REAL EXAMPLESportsbet gives you a A$50 free bet. Back any selection at 4.00, lay on Betfair at 4.20. Result: ~A$37 profit guaranteed — win or lose, every time.
1Bet at the bookmaker to unlock your free bet
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2Cover the same bet on Betfair to cancel out the risk
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3Receive your free/bonus bet (tiny qualifying cost)
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4Use the Free Bet tab below → pocket ~75% as cash

Step 2: Convert Your Free Bet to Cash

You've got your free bet — now lock in the profit. Enter the free bet amount and pick any odds (higher = more cash). We'll tell you exactly what to place on Betfair so you pocket guaranteed profit no matter who wins.

Bet Type:

⚠️ SNR: Most AU bonus bets. If your bet wins, you only receive the winnings — the stake is not returned.

A$
The value of your bonus bet
Use higher odds (3.00+) for SNR free bets — extracts more value
Should be close to (but usually slightly higher than) back odds

RESULTS

LAY STAKE ON BETFAIRA$36.14
GUARANTEED PROFIT+A$34.3468.7% of free bet
BETFAIR LIABILITYA$115.66Funds needed on exchange
If Back Wins+A$150.00 return
If Lay Wins+A$34.34 from lay
Extraction Rate68.7%

✅ Good extraction rate

EXTRACTION RATE REFERENCE

For SNR free bets: higher back odds = higher extraction rate. These are estimates at 5% Betfair commission with a 2-3% odds spread.

Back OddsEst. Extraction RateRating
2.0046.3%⚠️ Avoid
3.0061.3%✅ Good
4.0068.7%✅ Good
5.0073.8%✅ Good
6.0076.0%🔥 Excellent
8.0079.6%🔥 Excellent