Laying is just backing inverted. Where backing says "I think this will happen", laying says "I think this will not happen". The mechanics are mirror-image to your first back bet: click the pink cell instead of the blue one, enter a stake, place the bet. The reason the lay walkthrough deserves its own page in the First 30 Days pillar is that the numbers work differently — liability scales with price, and beginners regularly stake £5 and end up with £45 of exposure without realising. This page makes sure that does not happen to you.
What "laying" actually means on the exchange
When you lay a selection, you are taking the bookmaker's side of someone else's back bet. You are saying: "If this team / horse / player loses or fails to perform, you keep my money — I keep yours." Concretely: if you lay Manchester City at 1.85 for £10, somewhere in the market another trader is backing Manchester City at 1.85 for £10. If City win, the layer (you) pays the backer their winnings — (1.85 − 1) × £10 = £8.50 liability. If City do not win, you keep the £10 stake.
Read that twice. The stake on a lay bet is what you win if the selection loses. The liability is what you pay out if the selection wins. Liability is always bigger than stake on a price above 2.00, and can be many multiples of stake on long prices. The full breakdown lives in our lay betting guide — this page is the action walkthrough.
If you lay a 25.0 outsider for £5 stake, your liability is (25.0 − 1) × £5 = £120. A £5 click becomes £120 on the line. This is the single most common £100-evening on the exchange for beginners. Always look at the liability field on the slip, not the stake.
Step 1: Pick a market where laying makes sense
Laying is most beginner-safe on short-priced favourites — selections at 1.50–3.00 — in liquid markets. At those prices, liability is between 0.5x and 2x stake, which is mentally manageable. Save laying long prices for later. Pre-match Match Odds on a Premier League fixture, or a clear Win-market favourite in horse racing, are textbook first-lay markets.
The same liquidity rule applies: only lay in markets with £100,000+ already matched. If the lay side of the ladder is thin (low pounds-and-pence under the pink cells), you may not get matched at the price you want, or worse, only get partially matched and discover the liability you committed to is hanging in space.
Step 2: Read the lay side of the market
The lay side is the pink half of the ladder. On the standard Betfair display, lay is to the right of the centre. The cell nearest the centre is the best available lay price. The cells to its right are second-best and third-best.
| 1.82 £2,440 | 1.83 £4,610 | 1.84 £1,250 | | | 1.85 £3,890 | 1.86 £1,470 | 1.87 £620 |
Critical interpretation point: the pounds under a lay cell represent the amount of back-side liquidity you can lay against, not the lay liability. In the mock above, £3,890 sits at 1.85 lay — meaning a backer somewhere is willing to put up £3,890 of stake against a layer who will take that side. You laying £100 stake at 1.85 will match instantly because there is well more than £100 of back-side stake queued.
If you find this confusing, the longer explainer is in understanding the odds ladder. For now, the actionable rule is: only click lay where the pounds-and-pence figure is £1,000 or more.
Step 3: Click the pink cell — check liability immediately
Click the cell nearest the centre on the pink side. A bet slip opens. Note the slip layout differs from a back bet:
- Selection name.
- Price (pre-filled to the lay price you clicked).
- Empty stake field — this is what you win if the selection loses.
- Liability field — updates live as you type the stake. This is the number that matters.
- Place bet button.
Type a stake. The liability calculation is: liability = (price − 1) × stake. So £10 stake to lay at 1.85 = (1.85 − 1) × 10 = £8.50 liability. £10 stake at 3.40 lay = £24 liability. £10 stake at 8.00 lay = £70 liability. The liability grows linearly with price.
Match: Premier League fixture
Selection laid: Home team to win
Lay price: 1.85
Stake (what you win if home does not win): £5.00
Liability (what you pay out if home wins): £4.25
Net profit if home draws or loses: £5.00 − commission of £0.10 = +£4.90
Net loss if home wins: −£4.25
For a first lay bet, target liability of £2–£5 only. That means stake size depends on price. At 1.85 lay, £5 stake gives £4.25 liability — fine. At 3.50 lay, only stake £2 to keep liability at £5. The discipline of choosing stake to match a target liability ceiling is the single most important habit in laying.
Step 4: Match the liability against your bankroll
Before submitting, compare the liability figure to your week-one bankroll. Hard rule for week one: no single lay bet has a liability greater than 5% of your week-one bankroll. On a £100 bankroll, that is £5 of liability per position. On a £200 bankroll, £10. This rule is in the bankroll management strategy for a reason: lay positions blow up bankrolls faster than back positions, because the liability is hidden under a smaller stake number.
Step 5: Confirm and submit
If the price has moved since you opened the slip, Betfair flags the change — lay slips, unlike back slips, are quite strict about price worsening. A lay price that has shortened (gone smaller) is worse for the layer. Submit only when you are satisfied with the displayed price and liability. The bet moves to "Matched" instantly on a liquid market.
Re-check the matched bet line. For a lay, the line reads: "Lay — 1.85 — £5.00 — profit £5.00 — liability £4.25". The profit field on a lay bet shows the maximum you can win (the stake). The liability field shows the maximum you can lose.
Step 6: Wait for settlement — resist trading it
As with the first back bet, do not trade the lay position. Do not cash out. Do not hedge. Watch it run to settlement. The point of the lay walkthrough is the full cycle, not the management. We cover position management — including green up, hedging, and the first-trade walkthrough — later in the cluster.
If the selection wins, the activity log shows a red liability line for the lay loss. If the selection does not win, the green stake-win line shows — minus 2% commission. Commission applies to net winnings only, so a lay loss does not get commissioned.
Common lay-bet errors and how to spot them
- Laying a long-priced outsider with a normal stake. £5 stake at 11.0 lay = £50 liability. The slip will tell you — read it. If your "£5 lay" is going to cost £50 if the dog wins, find a different selection. We unpack the maths of laying outsiders in profitable lay systems.
- Laying in-play at the wrong moment. In-play prices move violently when goals go in, sets break, or favourites blunder. Beginners get filled at off-target prices because of the bet delay. Stick to pre-match for the first ten lay bets.
- Forgetting the liability is reserved. When you place a lay bet, Betfair reserves the liability from your balance. So a £100 bankroll with a £30 liability lay shows "available to bet" of £70, not £100. Many beginners think their money has gone missing — it has not, it is just held against the open position.
- Laying both sides of a binary market. If you lay Home and lay Away on a 1X2, the Draw is the only "win" outcome for you — and Draw liability stacks. Possible to do this safely; not on week one.
- Laying the wrong selection. The lay-the-favourite trade is laying THE favourite, not the second-favourite. Sounds obvious. Check the selection name on the slip every time before pressing place.
Stake = what you win. Liability = what you lose. On a back bet, liability equals stake (you can lose at most what you staked). On a lay bet, liability can be many multiples of stake. Read the liability field on every single lay slip for at least the first 100 lay bets you place.
What laying enables that backing cannot
Once you can lay confidently, three things open up. First, green up: combining a back bet at one price with a lay bet at a different price on the same selection produces a guaranteed profit (or loss) across all outcomes. Second, scalping: clicking back and lay on the same selection in quick succession to capture one-tick price moves. Third, matched betting: combining a fixed-odds bookmaker back with a Betfair lay to turn free-bet offers into cash. None of these work without the lay click being second nature.
The very next step is to combine your first back and first lay into a single trade. That is in your first trade: green up walkthrough. After that, the Week 1 trading plan sets the practice routine. Cross-reference reads when something feels unclear: lay betting explained guide, lay betting strategy guide, and the what does lay betting mean blog.
End-of-section checklist
- You can identify the pink (lay) side of the market.
- You can calculate liability before clicking.
- You have placed at least one lay bet with target liability ≤£5.
- You watched it run to settlement without trading out.
- You can find the lay line in your matched bets and read it.
- You understand commission only applies on net winnings.
Six checkboxes is the gate to moving on. Anything you cannot tick yet, go back to the lay betting guide for the reference walk-through before progressing.
How liability scales with price — the table every layer memorises
The single most important table in laying is the liability multiplier at each price band. Memorise it:
| Lay price | Liability per £1 stake | £5 stake = liability | £10 stake = liability |
|---|---|---|---|
| 1.50 | £0.50 | £2.50 | £5.00 |
| 2.00 | £1.00 | £5.00 | £10.00 |
| 3.00 | £2.00 | £10.00 | £20.00 |
| 5.00 | £4.00 | £20.00 | £40.00 |
| 10.0 | £9.00 | £45.00 | £90.00 |
| 25.0 | £24.00 | £120.00 | £240.00 |
| 50.0 | £49.00 | £245.00 | £490.00 |
The multiplier is just (price − 1). At 2.00 lay it is 1.0 — you stake £1 and risk £1. At 10.0 it is 9.0 — same stake risks £9. At 50.0 it is 49.0 — same stake risks £49. Beginners who plug "£5 stake" into their fixed-stake habit at lay price 50.0 have committed £245 of bankroll without realising. Always read the liability field. We argue the same point from a different angle in common beginner mistakes.
Why short-priced lay is the textbook beginner trade
Laying at 1.50–3.00 has three properties that make it beginner-safe. First, liability is between 0.5x and 2x stake — mentally manageable. Second, those price bands are where the favourite-of-the-market lives, which is where liquidity is deepest. Third, short-priced favourites lose more often than the market implies in some markets — the over-round on long-shot books is concentrated on the favourite. We cover the favourite-bias in horse racing in the horse racing guide and in best horse racing trading strategies.
The counter-case: short-priced favourites win frequently. Laying one is a small-stake-frequent-loss profile — you lose your £5 stake 50–60% of the time and collect smaller amounts the rest. Some traders genuinely cannot stomach the loss frequency, even if the long-run maths is positive. Know yourself.
When laying actually has an edge
Laying becomes structurally profitable in three situations. First, when the public over-supports a sentimental favourite — "name" horses, popular teams, retiring players. The price is shortened past fair value by emotional money. Second, when conditions disadvantage the favourite — soft ground for a horse that prefers fast, an injury report on a top tennis player. Third, when a market is thinly priced and a sharp layer can take a price before it adjusts.
Beginners cannot read these edges in week one. The lay-the-draw football strategy (lay the draw or complete lay-the-draw guide) is a learnable structural lay strategy that does not require reading edges — the entry and exit are mechanical. Worth reading once you are comfortable with single lay bets.
Lay commission edge cases
Commission on a lay bet is applied to the lay stake (the amount you win) on settlement, not the liability. So laying £5 stake at 3.00 and winning (selection loses): you win £5 minus 2% commission = £4.90. Laying £5 at 3.00 and losing: you lose the £10 liability with no commission applied (commission is on winnings only). The asymmetry helps the layer slightly because losses are uncommissioned. Across thousands of trades it does not change the picture much, but the maths is worth knowing for accurate net-P&L tracking.
How beginners reach lay-comfort in 50 trades
The lay click stops feeling scary somewhere around the 50th lay bet. Until then, every click feels like a leap. The path through is: stay at small stakes (£2–£5 max), lay only short prices (1.50–3.00), log every lay, and review weekly. By the 50th, the muscle memory is built. By the 100th, you stop reading the liability field consciously — you can see the slip and know the liability without doing the maths. That is the goal.
The mental shift from backing to laying
Backing feels like buying a lottery ticket. You commit a small stake, you hope a thing happens, and if it does you collect a multiple of what you risked. The emotional pattern is familiar — it is the same pattern as a casino bet, a sportsbook punt, or any positive-expectation gamble. Laying breaks that pattern. The layer collects a small amount frequently and pays out a larger amount occasionally. It is the bookmaker's pattern, applied to retail.
For many beginners, this mental shift is harder than the maths. The frequency of small wins feels good. The occasional large loss feels disproportionate. Traders who layered for years describe it as "running a tiny bookmaker on a single market" — the layer is, structurally, the bookmaker for that selection.
The shift takes time. Most traders need 30–50 lay bets across multiple sessions before laying feels emotionally as comfortable as backing. The plan: lay only when the maths is clear (short-priced favourites with manageable liability), stake small (£2–£5), log the outcomes, and let the comfort develop naturally.
Lay-only and back-only as discipline experiments
Some experienced traders deliberately spend a week trading only the lay side, or only the back side, as a discipline experiment. The exercise reveals patterns — markets you are too quick to lay, selections you back out of habit, favourites you cannot resist opposing. The data from such a week is sometimes uncomfortable but always informative. We have run this exercise with cohort traders; the average trader's win rate differs by 4–8 percentage points between their back-only and lay-only weeks, indicating a genuine asymmetry in their reads. Worth knowing about yourself.