The first thing to understand is that Maestro is on its way out, not expanding. Mastercard halted new Maestro issuance across Europe from July 2023, and cards are being replaced upon expiry with Debit Mastercard, which offers better e-commerce usability. Even in debit-centric Ireland, the mainstream of payments is current debit cards and digital wallets, and Maestro's only remaining relevance is capturing payments from cards that have not yet been replaced.

There is therefore no reason for a newly entering merchant to prioritize Maestro. Only businesses serving customers across multiple European countries, or those observing existing European customers attempting Maestro payments, have a reasonable case for enabling it as a complementary option to reduce declined authorizations. If the goal is acquiring new Irish customers, accepting wallets like Apple Pay and Google Pay and mainstream debit cards should come first.

Payments from existing Maestro cardholders are authorized through the Mastercard network just like a standard debit card, with 3DS2-based Strong Customer Authentication (SCA) applied to online transactions. The authorized euro (EUR) amount is received by Hecto Financial, converted, and settled to the Korean merchant in the contracted currency. As a transitional brand, transaction volume naturally declines over time.

Within Hecto Financial's integration, Maestro is reviewed as part of card acceptance coverage rather than as a standalone method to adopt. Please consult on the basis of pairing it with current mainstream cards such as Debit Mastercard.

• Country of business registration

  Confirm whether a contract is available for businesses registered in Korea

• Sales channels

  Integration method and priority differ depending on your mix of online channels, such as your own storefront, marketplaces, and mobile apps

• Product categories

  Check in advance whether your category falls under restricted industries under the Maestro operator's merchant policy

• EU regulatory compliance

  Confirm compliance with EU payment regulations such as PSD2 and SEPA (see official sources below)

Maestro transactions follow the same settlement path as other cards. The euro (EUR) amount is received and converted by Hecto Financial, then paid to the Korean merchant in whichever of USD, KRW, or JPY was set in the contract (cycle per contract terms). Refunds are processed to the original card, but given the transitional nature of card replacement, it is worth confirming during contracting the refund path for cases where the original card has already been closed.

• Central Bank of IrelandOfficial information on Ireland's payment systems and related regulations. If this page's content differs from actual regulations, the official source takes precedence.