Betting exchanges in Ireland: back, lay, liability and commission

What an exchange actually is

A bookmaker sets a price and takes the other side of every bet. An exchange does neither: it runs an order book where one customer offers odds and another accepts them. The exchange earns a commission on winnings instead of building a margin into the price.

That changes two things for you. You can bet on an outcome happening (back) or not happening (lay), and the price you get is whatever other customers are willing to offer at that moment. If nobody is offering your price, your bet sits unmatched until someone takes it or you cancel it.

Back and lay: one bet, two sides

Every matched exchange bet has a backer and a layer. The backer stakes money on the selection winning. The layer acts as the bookmaker for that bet and pays out if it wins. The numbers below are illustrative; the 2% rate is the one Betdaq published for Irish residents.

Note the asymmetry. Laying at 3.00 risks €40 to win €20. Laying a long shot at 21.0 for €20 would risk €400. Exchanges are often sold as "being the bookie", but the bookie side of a long price is the expensive side.

Liability, in one formula

Liability is the maximum the layer can lose on a bet, and the exchange holds it from your balance when the bet is matched.

If you have several bets in one market, exchanges usually show the net position for each outcome rather than adding liabilities together. Our odds calculator works out stake, liability and return after commission for a single bet.

Commission is charged on net market winnings

Commission is not taken from each winning bet. It is taken from your net profit on a whole market once it settles. If you lose on the market overall, you pay nothing. That is how Betdaq's help centre describes its own charge (read 11.11.2026); other exchanges publish their own rules.

Why exchange odds can beat a bookmaker's

A bookmaker's prices add up to more than 100% in implied probability. That excess, the overround, is the bookmaker's built-in margin. On an exchange, back and lay prices compete in the same order book, so on busy markets the best back price often sits close to a fair price, and the cost moves to commission on winnings only.

This is not a rule. On thin markets the exchange may have little money waiting at any price, and the gap between back and lay can be wide. At higher commission rates the advantage shrinks: at 5%, the same 3.00 is worth 2.90. Check the depth of the market, not only the headline number. The overround calculation is explained on the calculators page.

Exchanges with a GRAI licence

Since 1 July 2026 a remote betting operator needs a GRAI licence to take bets from people in Ireland (Citizens Information). Exchanges hold a Remote Betting Intermediary (RBI) licence, some also a Remote Betting (RB) licence. These are the four exchange operators we found on the GRAI register updated 20.10.2026.

Exchange	Licence holder	Licence no.	Issued	Commission (IE)	iOS app rating (IE)
Betdaq	Exchange Platform Solutions Limited	GRAI-0313-RB-26-0001, GRAI-0313-RBI-26-0001	30.07.2026	2% of net market winnings (help centre terms); trading stopped 21.10.2026	No app found in the IE store, 11.11.2026
Matchbook	Triplebet Limited	GRAI-0955-RB-26-0001, GRAI-0955-RBI-26-0001	01.10.2026	Not confirmed by us yet	4.63 (89 ratings)
Smarkets	Smarkets Malta Limited	GRAI-0691-RBI-26-0001	12.08.2026	Not confirmed by us yet	4.15 (54 ratings)
Betfair Exchange	Betfair International plc	GRAI-1074-RBI-26-0001	11.08.2026	Not confirmed by us yet	4.63 (2,226 ratings)

App ratings are from the Irish App Store on 11.11.2026. The Betfair Exchange app is sold by "Betfair LTD", a different name from the licence holder on the register; we record both and do not guess the relationship.

Commission rates: what we could and could not confirm

Operator websites do not open from our location, so we print a rate only where we read it from a primary source.

• Betdaq: 2% for residents of the UK, Ireland, Gibraltar and Jersey, 5% elsewhere, from its help centre.
• Matchbook, Smarkets, Betfair Exchange: commission rate not confirmed by us yet. Rates quoted on comparison sites are not a source for us.
• Betfair: the Racing Post reported on 18.12.2024 an "Expert Fee" from 6 January 2025 for customers with 52-week gross profit above £25,000. The report does not say whether it applies to Irish accounts.

What exchange customers complain about

We cannot open accounts yet, so we read the 200 most recent Trustpilot reviews of each licensed exchange (collected 11.11.2026). Betdaq is left out because it has closed.

Exchange	Trustpilot score (reviews)	Our sample covers	1-2 star share in sample	Most common complaint
Matchbook	4.1 (2,303)	12.11.2025 to 10.11.2026	20%	account restrictions
Smarkets	2.2 (628)	12.08.2024 to 09.11.2026	53%	account restrictions
Betfair Exchange	3.2 (4,736)	19.08.2026 to 11.11.2026	44%	promotions and free bets

The Betfair figures are for betfair.com as a whole, so they mix the Exchange with the sportsbook and casino. Across all three, the same subject leads the negative reviews: account checks, restrictions and money held during a review, not the odds. That matches the Irish rule in force since 1 July 2026: a licensee must verify identity and age before registration, so have photo ID and proof of address ready before you deposit.

Trustpilot reviews are a signal, not proof: anyone can post, companies can invite reviews, and unhappy customers write more. Details for each exchange are on its page.

Before you open an exchange account

• Check the licence yourself on the GRAI register; it is the only list that counts.
• Expect identity and age checks before registration: since 1 July 2026 a remote licensee must verify them, with photo ID and proof of address.
• Credit cards cannot be used for gambling since 5 February 2026 (S.I. No. 31/2026).
• Laying is a bet with real liability. Set deposit limits before you start; licensees must offer them.

Own account test: pending (see how we rate). It covers Matchbook, Smarkets and Betfair Exchange; Betdaq has closed. Help lines are on our safer gambling page.