1-Tick Scalping on Betfair: The Complete Step-by-Step Mechanics

What 1-Tick Scalping Means

1-tick scalping is the mechanical core of all scalping on Betfair Exchange. Back at the available back price, lay one tick lower (or higher if the price has moved up), and capture the small green across all runners. This article details the exact mechanics. Pillar context: Scalping Pillar; the entry path for beginners is Scalping for Beginners.

"1 tick" means the smallest possible price movement on a given odds level. Betfair's tick sizes are not uniform — they vary by price band:

This means a 1-tick scalp at 3.40 involves moving to 3.45 (5 pence movement) while a 1-tick scalp at 2.50 involves moving to 2.52 (2 pence movement).

Why 1 Tick, Not 2 or 3

The reason for capping scalp targets at 1 tick is hit rate. A 1-tick target fills at 75–85% hit rate on properly selected markets. Stretching to 2 ticks drops the hit rate to 55–65% — the per-trade win is bigger, but the bigger losses on the missed trades cancel the gains.

The expected-value math:

• 1-tick target: 80% hit rate × +£0.40 green − 20% miss × £0.80 stop = EV +£0.16 per trade.
• 2-tick target: 60% hit rate × +£0.80 green − 40% miss × £1.20 stop = EV +£0.00 per trade.
• 3-tick target: 45% hit rate × +£1.20 green − 55% miss × £1.60 stop = EV −£0.34 per trade.

1-tick is the only mechanically positive-EV option for clean scalping. Stretching for bigger ticks is the most common scalp-killer.

The Step-by-Step Sequence

The mechanical 1-tick scalp:

1. Identify a market with sufficient liquidity (£200k+ matched), single dominant favourite, 1-tick spread.
2. Note the current back-side price (e.g. 3.40).
3. Note the current lay-side price (e.g. 3.45) — this confirms 1-tick spread.
4. Decide direction. If you think price will fall, back first, lay lower. If you think price will rise, lay first, back higher. (For pure scalping, the direction guess is less important than the spread capture.)
5. Place the back order at 3.40 for £30. Wait for fill.
6. Place the mirror lay order at 3.35 for £30 immediately after the back fills.
7. Place the stop-loss back order at 3.50 (2 ticks against the trade). Most software does this automatically.
8. Wait. Lay typically fills within 5–90 seconds.
9. Confirm fill and net P&L. Log the trade in the diary.

Back-First vs Lay-First

You can scalp in either direction:

• Back-first scalp: back at the back price, lay lower. Profits if price drifts. The standard direction when WOM (weight of money) favours backing.
• Lay-first scalp: lay at the lay price, back higher. Profits if price steams. The standard direction when WOM favours laying.

Reading WOM accurately to pick direction takes practice. Beginners can default to back-first and accept the mixed P&L until pattern recognition develops.

Filling Mechanics — Why Lay Fills Matter

The lay-side fill is the critical event in a scalp. A back fills almost instantly because back orders sit at the spread waiting for incoming lay flow. The lay fills when subsequent flow takes both sides at the new price level.

Three things affect lay fill speed:

• Queue depth at the new lay price. If £40k is already waiting at 3.35 lay, your £30 sits behind that queue and may fill slowly.
• Direction of price flow. If price is drifting, lays fill faster as backers chase the lower price.
• Time of session. Closer to the off, fills accelerate as more flow enters the market.

The Time-Stop

If neither the lay nor the stop-loss has filled within 3 minutes, exit the trade at break-even. The market context has shifted; the trade has gone stale. Continuing to wait converts a controlled scalp into uncontrolled exposure.

Most software allows automatic time-stops. Configure it for 3 minutes maximum.

Multiple Trades Per Market

A typical scalp session captures 4–8 trades per market across the 30-minute pre-event window:

• Off −25 to off −15: 1–2 light scalps as liquidity builds.
• Off −15 to off −8: 2–3 prime-window scalps with full stake.
• Off −8 to off −3: 1–2 sharp-window scalps with reduced stake.
• Off −3 to off: Avoid — too volatile.

Commission Impact

Commission at 5% on a £0.42 green is £0.021 — effectively negligible per trade but accumulates across hundreds of trades to £3–£10/month in friction. Active scalpers reach the discount rate within 4–8 weeks. See Commission Explained.

Execution Errors to Avoid

1. Forgetting to place the lay. You back at 3.40, get distracted, and now hold an open back position. Software with automated mirror lay prevents this.
2. Wrong stake size on the lay. Mirror should be exactly the same stake as the back (or scaled by price for an even green-up). Use the calculator: trading calculator.
3. Cancelling the stop-loss. Never cancel a stop-loss "to give the trade room". The stop is there for a reason.
4. Re-opening trades immediately. If a stop-loss fires, wait at least 30 seconds before re-entering the same market. The market is telling you something.

Advanced 1-Tick Variations

Three variations of the basic 1-tick scalp for intermediate traders:

The Asymmetric Scalp

Back at 3.40, lay at 3.30 (2 ticks lower). Lower hit rate but bigger green per fill. Use only when WOM strongly favours your direction. Stake at 0.5% bankroll.

The Greenup Scalp

Back at 3.40, lay at 3.35 with stake adjusted to deliver equal green across all outcomes (not just on the favourite winning). Slightly different math; useful for traders who want to bank guaranteed profit regardless of race outcome. Calculator handles the math.

The Multi-Selection Scalp

Run scalps on 2–3 runners simultaneously. Higher cognitive load but doubles the opportunity per market. Recommended only after 200+ single-selection scalps.

Mastering the Mechanic

1-tick scalping is mechanically simple but takes hundreds of trades to internalise. Once internalised, it becomes the workhorse of part-time and full-time Betfair trading.

Execution Speed Matters

The speed of order placement affects scalp success rate:

• Manual (Betfair website): 800ms–3s per order. Acceptable for first 100 trades only.
• Ladder software with one-click: 50–150ms per order. The standard for serious scalping.
• Software with hotkeys: 30–80ms per order. Used by high-frequency scalpers.
• API automation: 5–30ms per order. Used by professional and algorithmic traders.

Most retail scalpers operate in the second tier. Stepping up to hotkeys or API automation is worth doing only after 6–12 months of mechanical experience.

Why Most 1-Tick Scalps Fail

Three common failure modes:

1. Lay never fills: queue depth at the target price is too thick. The trade times out at break-even. Solution: avoid markets with disproportionate queue depth.
2. Stop-loss fires before lay: price moves against the trade by 2 ticks. Take the loss, log it, move on. Avoid revenge trades on the same market.
3. Spread widens mid-trade: what was 1 tick becomes 3 ticks. Cancel and exit. Don't chase fills on widened spreads.

A successful scalp run might be 12 wins, 4 stop-losses, 4 break-evens out of 20 trades — net positive but not 100% green. Manage expectations accordingly.

FAQ

How fast does a typical 1-tick scalp complete? 5–90 seconds for the lay fill on liquid markets. Slower (90–180 seconds) on thinner markets.

Should I always use 1-tick targets? Yes, for pure scalping. 2-tick and 3-tick targets are different strategies (swing trading) with different math.

What if my lay won't fill? Use the time-stop at 3 minutes and exit at break-even. Don't move the lay closer to "make it work" — that's chasing.

Can I 1-tick scalp on football? Yes, but the mechanics differ slightly because football pre-match is a single 30-second window of liquidity rather than a building 30-minute window. Scalping football.

How does tick size affect the scalp economics? Larger tick sizes (in the £5+ price band) produce bigger absolute greens per scalp but also bigger absolute stops. The relative math is similar.