I redesigned a save interjection experience for when a customer switches their refund deposit method away from Credit Karma Money, using a comparison chart to rebuild trust in Credit Karma as a real bank.
Account Setup onboarding flow, with a personalized Homepage checklist
1 Product Manager · 3 Engineers · 1 Designer (me) · 2 SMS Designers
Product Design · User Research · Prototyping
A "Heartbreaker" is a TurboTax customer who selects Credit Karma Money to deposit their refund, then switches to a different method before filing is complete. They didn't think getting their refund five days early was fast enough, and weren't confident Credit Karma was a real bank. The existing save experience only retained 11 to 27% of these customers, and for 2024 there was a clear need to improve it.
The solution: a modal that appears the moment a customer switches away from Credit Karma Money, replacing a plain benefits list with a comparison chart weighing Credit Karma Money against a traditional bank. It leans on loss of "5 days early" as the primary motivator, backed by trust-building, table-stake benefits.
Since Intuit acquired Credit Karma, TurboTax customers could deposit their refund into a Credit Karma Money account and receive it five days early. The existing Heartbreaker experience triggered as an entirely new screen when a customer went back to change their refund method, adding to an already long tax filing flow without ever highlighting what made Credit Karma Money worth keeping.
User research shaped every major call here: which interjection point to use, how to present Credit Karma Money's benefits, and how to get an unbuilt component shipped despite real engineering constraints.
I explored two ways to surface Credit Karma Money's benefits. A banner on the refund selection screen added no extra screens, but couldn't fit enough information to build trust. A modal, triggered right after a customer picked a different refund method, could carry a full comparison but risked adding to an already long flow. My team preferred the modal: it acted as a soft reminder without inserting a brand new interjection screen the way the old design did.


Inside the modal, I narrowed to two concepts: a short list of Credit Karma Money's key benefits, or a chart comparing it directly to a traditional bank. I tested both, in random order, with ten customers. The comparison chart won decisively: the list offered too little information, while the chart let people see Credit Karma Money's potential as a real bank, directly addressing the trust concerns research had already surfaced.


I cut the modal's illustration to make room for the chart, and worked with content, legal, and research to land on trust-building benefits. The chart itself wasn't an existing component, and a from-scratch build was ruled out as too large a scope, so I made the case to modify an existing one instead, scaling it to fit this use case and documenting it as a formal spec so other teams could reuse it.
A few things I'd do differently next time.
I'd connect with dev partners earlier, before the component conversation turned into a scope debate, and loop in the Systems team sooner too, since their input would have shaped the design earlier instead of late. And I'd be quicker to escalate when I hit a wall, rather than waiting to see if a compromise would surface on its own.