What Is Visa and Mastercard Principal Membership and Why Does It Matter?

When you evaluate a card acquirer, you check fees, settlement speed, and industry experience. Most merchants skip one question: is the card acquirer a Principal Member of Visa and Mastercard, or do they route your transactions through another institution? The answer directly affects your approval rates, your pricing, and your account stability.

This article explains what Principal Membership is, how it differs from other scheme membership tiers, and why it matters for any business accepting card payments in the EU / EEA.

What is Visa and Mastercard Principal Membership?

Principal Membership is a direct licence granted by Visa or Mastercard to a financial institution, giving it the highest level of access to the card network. Principal Members work directly with the card schemes for product development and marketing, and hold full responsibility for all activities associated with their assigned BINs (Bank Identification Numbers).

A Principal Member holds a direct contractual relationship with Visa and Mastercard. It connects to the card networks without routing through a sponsoring institution. It bears full financial and regulatory liability for its merchant portfolio. It also controls the key decisions that affect merchant performance: underwriting, risk rules, settlement, and pricing.

Principal Membership provides access to card issuing and merchant acquiring functions, ownership of BINs, and direct settlement capabilities with the card schemes. It is granted exclusively to licensed financial institutions. In the EU / EEA, this means entities holding a credit institution licence, an Electronic Money Institution (EMI) licence, or a Payment Institution (PI) licence from a recognised national regulator.

VIALET holds Principal Membership with both Visa and Mastercard and operates under EMI Licence No. 16 issued by the Bank of Lithuania. VIALET provides direct card acquiring for businesses across Europe on the basis of this membership.

Principal Member vs Associate / Affiliate Member: the key differences

Card scheme membership comes in two tiers. Understanding the difference explains why your choice of card acquirer matters beyond the fee sheet.

A Principal Membership with Visa or Mastercard allows a financial institution to issue its own branded cards, gain full control over card programmes, and earn interchange fees directly. Associate / affiliate members, typically smaller financial institutions such as startups or credit unions, operate under the sponsorship of a Principal Member and rely on the principal for support in specific areas such as settlement, reporting, and fee payment.

For merchants, the practical effect of this distinction runs through four areas.

How Principal Membership affects your card acquiring

Approval rates

Direct connection to Visa and Mastercard gives the card acquirer greater control over transactions, optimising payment processes and increasing acceptance rates. When a card acquirer routes transactions through a sponsoring institution, an additional layer sits between the transaction and the card network. Each additional layer introduces routing complexity and potential failure points. 

For merchants in high-risk industries including iGaming, forex, and crypto, the gap between direct and indirect acquiring is wider. Read more about how approval rates vary by risk category in our guide on what is a card acquirer and how does it work.

Settlement speed

A Principal Member controls settlement directly. It does not depend on a sponsoring institution to initiate the transfer on its behalf. Standard settlement in EU / EEA card acquiring runs T+2, per Visa and Mastercard network clearing requirements. An additional intermediary layer in the settlement chain tends to extend this timeline, potentially introducing inconsistencies. Read our full guide on card acquiring in Europe for a breakdown of settlement standards across provider types.

Pricing transparency

Becoming a Principal Member eliminates the need for a third-party processor and results in lower transaction fees and more control over the payment process. When an Associate / Affiliate Member prices its services, its own costs include the margin charged by the sponsoring Principal Member. These embedded costs are not visible to the merchant as separate line items. The merchant sees a single blended rate and has no way to assess the actual cost structure.

A direct Principal Member prices against its own direct network costs. There is no hidden sponsor margin embedded in the fee.

Account stability

All merchants under an Associate / Affiliate Member’s programme share exposure to the sponsoring Principal Member’s risk decisions. If the sponsoring Principal Member applies a hold, changes underwriting criteria, or faces its own regulatory issues, merchants processed through it are affected regardless of their individual standing.

A direct Principal Member underwrites each merchant independently and holds the merchant relationship directly. Account decisions are based on the individual merchant’s profile, not on portfolio-level actions by a third institution.

What Principal Membership requires from the card acquirer

Principal Membership is only available to direct licence holders. Membership applications for card schemes are complex and time-consuming, requiring proof of compliance with the card schemes’ core rules and processes.

To hold Mastercard Principal Membership, an entity must be a financial institution authorised to engage in financial transactions under the laws of the country where it operates, regulated and supervised by one or more governmental authorities, and must have the requisite right, power, and authority to function as a member of Mastercard.

For Visa, Principal clients are typically larger institutions experienced in risk underwriting, credit management, billing, and payment collection, with the most flexibility for the capabilities they manage and full responsibility for all activities associated with the assigned BIN.

In practice, this means a Principal Member in the EU / EEA must hold an active regulatory licence, maintain capital buffers, pass ongoing compliance audits, meet Visa and Mastercard technical certification standards, and bear direct liability for its entire merchant portfolio. The barrier to entry is high by design. It filters out financial institutions without the operational and financial standing to manage the associated risk.

How to verify your card acquirer’s Principal Member status

Both Visa and Mastercard maintain public registers of their members. You verify Principal Membership by:

• Asking the card acquirer directly and requesting written confirmation
• Checking the Visa Partner Portal or Mastercard’s partner directory for registered members

When reviewing your acquiring agreement, ask the card acquirer to confirm their Principal Membership status in writing and request that it be referenced in the agreement. Direct Principal Members will be able to confirm this without hesitation.

A card acquirer routing through an Associate or Affiliate Member is not obligated to name that institution in the agreement, and most do not. For clarity, ask the card acquirer directly whether they hold Principal Membership or operate under a sponsor, and request written confirmation of their membership status. For more on how MCC classification and MIDs connect to your acquiring relationship, read our guide on MCC codes explained.

Summary

Principal Membership with Visa and Mastercard is the highest tier of direct scheme access. A Principal Member acquirer connects directly to the card networks, underwrites its own merchants, controls settlement, and bears direct liability for its portfolio. This produces higher approval rates, faster settlement, transparent pricing, and greater account stability compared to merchants processed through associate / affiliate members.

Verify your card acquirer’s membership status before signing. The difference is not visible in the fee sheet but shows up in approval rates, settlement consistency, and account security over time.

Explore VIALET’s card acquiring or open a merchant account.

VIALET is a licensed Electronic Money Institution authorised by the Bank of Lithuania and a Principal Member of Visa and Mastercard. We provide direct card acquiring and merchant accounts for businesses across Europe, including high-volume, regulated, and complex industries. Talk to our team.