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Craps buy and lay bets: true odds for a 5% fee

A buy bet pays true odds that a number rolls before a 7. A lay bet pays true odds that the 7 comes first. You pay a 5% commission for both.

Reviewed Oct 14, 2026

Answer first

90s
NumberBuy paysBuy edge (fee on win)Lay paysLay edge (fee on win)
4 or 102 to 11.67%1 to 21.67%
5 or 93 to 22.00%2 to 32.00%
6 or 86 to 52.27%5 to 62.27%

Key numbers

Buy and lay in four numbers

5%CommissionOf the bet on a buy, of the win on a lay
2 to 1Buy 4 or 10Place bets pay only 9 to 5
1.67%Best buy edge4 or 10, fee on win only
1.52%Place 6 or 8Still cheaper than buying them

In short

Key takeaways

  • Buying the 4 or 10 beats placing them, which costs 6.67%.
  • Placing the 6 and 8 at 1.52% is cheaper than buying them.
  • Ask whether the commission is taken up front or only on a win; it changes the edge a lot.
  • A $20 buy on the 4 with a $1 fee is the common way to make the commission round.

Cheat sheet

What a buy on the 4 is racing

Glance the pips — compare in one second.

  1. 1Hard 4

    One of three ways to roll a 4

  2. 2Easy 4

    1-3 or 3-1

  3. 3Seven

    Six ways — the buy loses, the lay wins

  4. 4Seven

    Another of the six

  5. 5Anything else

    No decision; the bet stays up

Pay table

Buy vs place on each number

Glance before you bet

NumberPlace paysPlace edgeBuy edge (fee on win)Cheaper choice
4 or 109 to 56.67%1.67%Buy
5 or 97 to 54.00%2.00%Buy
6 or 87 to 61.52%2.27%Place

Edges per bet resolved. If the casino takes the fee up front, every buy edge is 4.76%.

Lay bet edge by commission rule

NumberFee only on a winFee paid up front
4 or 101.67%2.44%
5 or 92.00%3.23%
6 or 82.27%4.00%

Lay bets bet against a number, so they win more often but pay less than even money.

How the commission works

On a $20 buy of the 4, the fee is $1. If the 4 rolls, you are paid $40 at 2 to 1. At many casinos you only pay the $1 on a win; at others you pay it when you make the bet.

On a lay of the 4, you risk $40 to win $20, and the 5% fee is $1 of the win.

Sequence

Making a buy bet

  1. Step 01

    Drop chips in the come area

    Tell the dealer "Buy the 10" with the amount.

  2. Step 02

    Pay the fee

    Ask if the vig is due now or only on a win.

  3. Step 03

    Wait for a decision

    Your number wins; a 7 loses.

  4. Step 04

    Take it down any time

    Buy and lay bets can be removed between rolls.

Who uses lay bets

Dark-side players, who bet against the shooter, use lay bets once a point is set. A lay on the 4 or 10 wins two times in three.

The bet stays up until a 7 or the number rolls, so one lay can last many rolls.

Floor rules

Craps terms

Know before you sit

Vig
The house commission on buy and lay bets, usually 5%.
True odds
The exact odds of a number rolling before a 7.
Working
A bet that is active on the next roll.
Dark side
Betting against the shooter with don’t bets and lays.

A buy and a lay over 36 rolls

Picture a $20 buy on the 10 left up for a long session. The 10 rolls three ways and the 7 six ways, so for every three wins you expect six losses.

At 2 to 1 the three wins pay $120 and the six losses cost $120. The game is even before the fee, and the $1 vig on each win is the only cost. That is why the edge is so low.

Common mistakes

Buying the 6 or 8
Their place bet already pays 7 to 6 at a 1.52% edge, lower than any buy. Place them instead.
Buying small amounts
A $1 minimum fee on a $5 buy is a 20% charge. Use amounts where 5% is at least $1.
Not asking about the fee
Up-front commission nearly triples the buy edge. One question to the dealer tells you which rule applies.
Leaving lays up forever
A lay on the 6 or 8 wins only six times in eleven. Treat it like any other bet with a limit.

Keep reading

Related pages

Go play

Where to play in Las Vegas

Tap a resort — each row opens that casino’s White Gambling page (hours, game mix, floor facts). Venues with this game in official counts, sorted high to low.

Browse all Las Vegas casinos →

After the 90 seconds

Questions before and after you play

A 90-second guide cannot cover every table moment. Tap a group, then a question — answers are short paragraphs, not one-liners.

01Buy bets

What is a buy bet in craps?

A bet that a chosen number rolls before a 7, paid at true odds. The house takes 5% as a fee instead of shaving the payout.

Should I buy the 4 and 10?

Yes, if you bet them at all. Buying cuts the edge from 6.67% to 1.67% when the fee is taken only on a win.

Is buying the 6 and 8 a good idea?

No. Placing them costs 1.52%, while buying costs about 2.27% even with the best fee rule.

02Lay bets

What is a lay bet?

A bet that a 7 rolls before your chosen number. It pays less than even money because the 7 is more likely.

How much does a lay on the 4 pay?

1 to 2. Lay $40 to win $20, then pay a $1 fee on the win at most tables. It wins about two times in three.

Can I lay a number on the come-out roll?

Yes. Lay bets work on every roll unless you call them off. Ask the dealer to turn them off if you want them inactive during the come-out.

03Commission

Is the vig always 5%?

Almost always, but rounding rules differ. Some tables charge at least $1, and a few round the fee down on odd amounts.

What does "vig on the win" mean?

You pay the fee only when the bet wins. It lowers the edge compared with paying the fee up front.

Are buy and lay bets offered online?

Many online and live dealer craps games offer them. Check the help screen for the fee rule.

Sources

  1. Wizard of Odds — Craps Not from a registry (Reference source, not an official registry) · accessed Oct 14, 2026Rules, odds and house edge
  2. Wizard of Odds — Craps appendix 1 Not from a registry (Reference source, not an official registry) · accessed Oct 14, 2026Rules, odds and house edge
  3. Nevada Gaming Control Board · accessed Oct 14, 2026Approved games and gaming revenue reports
  4. National Council on Problem Gambling — Help and resources Not from a registry (Reference source, not an official registry) · accessed Oct 14, 2026Free, confidential help: call or text 1-800-GAMBLER