The Merchant Engagement Gap

Most acquirers touch their merchants once — at the point of transaction. Meanwhile, ISVs and PayFacs are turning that silence into a structural takeover.

Most merchant acquirers have relationships with their merchants that begin and end at the point of transaction. The merchant processes payments through the acquirer—and almost never logs in to the acquirer's portal again. In many cases, there is no functional portal to log into at all.

Meanwhile, those same merchants open entirely different tools every single day — their POS app, their accounting software, their ecommerce platform. These are the apps SMBs live in. SMBs manage an average of 36 applications to run their business (Okta, 2024) and lose 24 full working days a year to financial administration alone (Sage, 2025). The acquirers' platform is seldom among these daily tools.

The distance between "processes payments through an acquirer" and "has a daily relationship with that acquirer" is the merchant engagement gap — and it has become the most significant vulnerability in traditional acquiring.

Why this Gap is not Structural

The engagement gap was once a tolerable inefficiency. It has become a structural risk — because independent software vendors (ISVs) and payment facilitators (PayFacs) are filling it.

Roughly 90% of U.S. merchants now use an ISV solution for payments or business management, up from 48% in 2022 (as detailed in McKinsey's January 2026 analysis). The ISV channel is growing 3× faster than traditional acquiring channels (as detailed in McKinsey's January 2026 analysis). And the shift is largely one-directional: merchants not currently using an ISV are 3× more likely to switch to one than ISV users are to leave (McKinsey, 2022).

The reason is structural. ISVs don't just process transactions — they provide a daily operating environment in which payments are embedded within workflows the merchant already uses. The acquirer's processing role continues, but the merchant relationship migrates to the software platform.

The Economics of the Gap

The engagement gap carries measurable cost across three dimensions.

The 6.2-percentage-point attrition advantage comes from TSG's Acquiring Industry Metrics (AIM) platform, which benchmarks roughly half of all U.S. card-accepting merchants (TSG/Digital Transactions, 2022). Those integrated merchants also average 20% higher annual card spend and generate 36 basis points more revenue for their acquirer. Engagement is not a "nice to have" — it is a direct impact on profit and loss.

The primary reason merchants leave is not price. Among merchants who switched acquirers, 34% cited wanting better POS and payment-processing tools — up from 28% in 2020 (J.D. Power, 2024). Innovation has overtaken cost as the leading switching driver (Javelin Strategy & Research).

These TSG benchmarks (2022) remain directionally indicative in the current environment, with ongoing ISV shifts likely amplifying the engagement premium.

Why Daily Operational Relevance Looks Like

If the gap is the problem, closing it means shifting the acquirer's role from transaction processor to daily operational platform.

When a platform unifies POS data, settlement tracking, reconciliation, and business trends — all under the acquirer's brand — the merchant has a reason to log in every morning. Not because they were asked to, but because it is where they run their business.

At a minimum, Merchants want easy access to: net sales, transactions, settlements, terminal details, receipts, and reconciliation workflows. However, there is an opportunity to deliver deeper value to merchants—cashflow forecasting, multi-bank visibility, business app integrations, and intelligent insights that transform connected data into actionable recommendations. An acquirer offering this is no longer just processing payments. It is functioning as the merchant's digital operating system.

The demand is there. 87% of SMBs are considering integrated financial software within the next 12–24 months (BILL/SMB Group, 2025). Acquirers who move now are deploying white-label platforms in weeks, not building from scratch over years.

Three Patterns in Acquirers Who Are Closing the Gap

ISV payment-processing revenue reached $16 billion in 2025 — roughly 60% of all SMB acquiring revenue in the U.S. (McKinsey, 2026). The structural shift is accelerating. Internal platform builds typically require 18–24 months and a significant investment. White-label partnerships can be operational in a few months.

The question for the acquiring industry is not whether merchants want a daily digital operating system from their payments provider — the data suggests they already do. The question is which providers will fill that gap.

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