Do you know the most profitable account in your institution?

It can be difficult to determine which relationships generate the most long-term value for the bank. CDs, savings, loans? Many institutions would point to one of those products first.

But household profitability often tells a very different story.

A primary checking household can generate significantly more long-term profitability than a single-product CD or even savings relationship. These households tend to carry larger operating balances over time, use more products, and remain with the institution far longer than rate-driven depositors.

And perhaps most importantly, those operating balances are often among the lowest-cost, lowest-beta deposits on the balance sheet. In a margin environment like 2026, that funding mix matters.

At T3, we score every household in a customer file based on full relationship profitability, not just product-level revenue.

The results are often eye-opening. In many institutions, a relatively small percentage of checking households are driving a disproportionate share of long-term profitability and deposit stability.

That is where T3 comes in. If your institution is evaluating household profitability or deposit strategy initiatives, we should talk!