How One Digital Bank Cut Customer Acquisition Costs by 50% and Slashed 90-Day Churn

When it comes to winning customers, checking bonuses work. Roughly two-thirds of Americans say sign-up incentives influence where they open an account, and promotions routinely deliver a surge in new demand deposit accounts.¹ That’s great news in the short term, but these incentive-driven relationships often fall into the “fund and fade” category.

Consumers fund the account, collect the incentive, and then vanish just as quickly.

The challenge for banks and credit unions is not whether to pay for acquisition (which has proven itself as a viable strategy), it’s how to convert these customers into primary banking relationships once won. Here, accounts stay funded, payments are made within the banking experience, and relationships expand across products.

The Acquisition Trap and the Retention Question

A bonus-led strategy optimizes the top of the funnel. It does not, by itself, solve 90-day survival, cost per funded account, or wallet share after the promotion ends.

Incumbents have long understood a lever they rarely market like a rate special: bill pay. When Bank of America eliminated its monthly online bill payment fee in 2002, executives said electronic bill pay users showed roughly 80% lower attrition and higher balances, and framed free bill pay as a checking differentiator.² Additionally, 57% of FinTechs use embedded finance capabilities to increase revenue.³ This is an acknowledgement of the power of integrated bank payment services, which add value to the consumer experience through relationship-driving features.

At many mature banks, the playbook is defensive: protect a high lifetime-value base. Growth-oriented digital banks can run the opposite play: make integrated bill pay the activation gate on a checking bonus, so acquisition spend buys a recurring habit, not a one-time transaction—with ongoing relationships a hallmark of the Service-Commerce strategy.

Why Bill Pay Fits This Moment

Modern bill-pay convenience has bred a deeper challenge: severe fragmentation. Issuer sites, card apps, wallets, and aggregators combine to offer individualized convenience but no real centralization.

Consumers want one place to see and manage money. A generation that expects visibility in a single digital experience will try a new checking relationship when the bank can offer the ability to view, manage, and pay a variety of monthly financial obligations. Achieving this, however, relies on working with a billing and payments platform provider that can seamlessly merge these crucial touchpoints with modern and intuitive payment channels and methods.

That is the design behind this success story. The bank offered an up-to-$200 checking incentive that could be unlocked only through electronic bill pay, offered within a modern payments experience inside online banking. The acquisition strategy brings the customer in, but bill pay gives them a reason to return monthly.

What Changed In the Numbers

The following reflects the bank’s internal campaign analysis,⁴ which is read as a linear story of velocity, unit economics, and ultimately, relationship depth.

The Implication for Banks and Credit Unions

If your next checking campaign stops at “open and fund,” you are buying the easy, temporary half of the relationship. Visionaries and market leaders tie their acquisition to long-term growth built upon the relationship principles offered by integrated bill payment services. What this case study shatters are the myths that a) bill pay is a declining product in terms of usage, and b) a successful strategy requires a multi-year slog to realize a return.

By linking the acquisition bonus directly to the recurring behavior of electronic bill pay, the bank converted one-time promo-chasers into active users almost instantly. The benefits here were actualized within a short time horizon. This was not an unquantifiable promise of "long-term brand loyalty." The proof is immediate, visible in the rapid acceleration of account velocity, optimized unit economics, and measurable relationship depth right out of the gate.

To learn more about this story, contact a member of our team today.

Paymentus is a strategic partner in journey structuring acquisition incentives that pay when customers adopt Bill Center and Modern Payments in general. For more information on how Paymentus can help your financial institution formulate a strategy to deepen relationships, please visit paymentus.com/banking-fintech/.