Retail Paid Members: Membership Base Scale

Retail paid members measure the number of memberships in a retailer's fee-paying membership base under the issuer's counting rules.

The metric is especially important for warehouse clubs and other membership-led retail models.

Why paid members matter

Paid-member growth can expand:

• membership fee revenue;
• the pool of recurring shoppers;
• merchandise sales opportunities; and
• the value of the retailer's customer relationship.

But member count alone does not show member quality or engagement.

Membership operating model

A useful analytical framework is:

1Membership Fee Revenue ≈ Paying Membership Base × Effective Annual Fee
2Retail Sales ≈ Members × Shopping Frequency × Average Ticket

Actual reported revenue can differ because of timing, membership tiers, upgrades, promotions, and deferred revenue recognition.

Costco example

Costco reports total paid members and separately reports cardholders. It also discloses renewal rates and Executive-member counts.

Investors should not treat paid members and total cardholders as interchangeable. Household cards, affiliates, and other card relationships can make the cardholder count larger than the paid membership base.

Source:

• Costco 2025 Form 10-K

Paid members measure membership-base scale. Pair the metric with renewal, member mix, shopping frequency, average ticket, and membership fee revenue.

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