No. 9, late August 2026

Note on payment decline rates

This is one of the two drafts we flagged on the archive page in the spring, and it cleared the evidence bar once payment providers began publishing gambling-specific approval data this summer. The subject is the deposit that fails, which we have come to read as the most underpriced leak in the acquisition funnel.

The size of the leak

Card approval rates for gambling merchants run visibly below general e-commerce, the acquirer data we have seen puts the gap at somewhere between five and fifteen percentage points depending on market and issuer mix. On the first deposit specifically, the failure rate is worse still, first transactions carry the heaviest fraud scoring and none of the trust history that softens it. An operator can therefore pay full acquisition cost for a player, through media, offers or an affiliate fee, and lose a meaningful slice of those players at the cashier, after the marketing money is spent and before any revenue exists.

Why gambling declines more

The causes stack. Gambling carries its own card category code, and some issuers decline that code outright as policy, in certain countries because the law requires it, elsewhere as an internal risk stance. On top of policy sits scoring, gambling transactions attract heavier fraud model attention, and cross-border routing multiplies the problem, a deposit routed through a foreign acquirer fails far more often than one processed domestically. Then come the operator's own contributions, stale routing tables, missing local payment methods, and retry logic that resubmits a declined transaction identically and teaches the issuer's model to keep declining it.

What recovery is worth

The arithmetic makes remediation unusually attractive. If recruiting a depositing player costs a few hundred euros in blended marketing spend, then a percentage point of first-deposit approval recovered across a quarter's intake is worth more than most retention campaigns, and it compounds, a player whose first deposit succeeds smoothly behaves like the retained players described in our retention note, while one who fails twice usually never returns. The operators treating payments as a growth function, with local acquiring, method-level routing and issuer relationships, report approval gains that no equivalent media spend could buy at the same price.

Why it stays underfunded

Declines are invisible in the accounts. A failed deposit books no cost, no revenue and no customer, it simply never happened, so no line item bleeds and no budget owner feels it. The marketing team sees soft conversion, the payments team sees normal approval rates for the category, and the gap between what was bought and what arrived belongs to nobody. Our expectation is that this changes the way most measurement gaps change, one operator publishes the uplift from fixing it, and the rest discover the leak was always on their own cashier page.