For NAB's credit card offerings, how should we weigh introducing new rewards features against maintaining competitive interest rates?

Introduction

The trade-off between introducing new rewards features and maintaining competitive interest rates for NAB's credit card offerings is a critical decision that impacts both customer acquisition and retention. This scenario involves balancing short-term customer appeal with long-term financial sustainability. I'll analyze this trade-off by examining the product context, potential impacts, key metrics, and experimental approaches to inform a strategic recommendation.

Step 1

Clarifying Questions (3 minutes)

• Based on the competitive landscape, I'm thinking our current market position might be influencing this decision. Could you provide some context on NAB's current credit card market share and how it compares to our main competitors?

Why it matters: Helps determine if we need an aggressive growth strategy or a defensive approach. Expected answer: NAB has a moderate market share but is facing increased competition. Impact on approach: Would influence the balance between attracting new customers and retaining existing ones.

• Considering our revenue model, I'm assuming credit card interest is a significant income source. Can you share how much of our overall revenue comes from credit card interest versus fees and other sources?

Why it matters: Helps quantify the potential impact of lowering interest rates. Expected answer: Interest makes up about 60-70% of credit card revenue. Impact on approach: Would inform the level of risk we can take with interest rate adjustments.

• Looking at user behavior, I'm curious about our customer segments. What percentage of our cardholders are "transactors" (who pay off balances monthly) versus "revolvers" (who carry balances)?

Why it matters: Different segments would be impacted differently by rewards vs. interest rates. Expected answer: Roughly 40% transactors, 60% revolvers. Impact on approach: Would help tailor rewards and interest rate strategies to maximize value for both groups.

• From a technical standpoint, I'm wondering about our current rewards system infrastructure. How flexible is our existing system for implementing new rewards features?

Why it matters: Affects the feasibility and timeline of introducing new rewards. Expected answer: Moderately flexible, but some legacy systems may need updates. Impact on approach: Would influence the complexity and cost of implementing new rewards features.

• Considering resource allocation, I'm thinking about our marketing budget. How much additional budget could we allocate to promote new rewards features if we decide to go that route?

Why it matters: Determines our ability to effectively launch and promote new features. Expected answer: There's some flexibility, potentially up to a 20% increase in marketing spend. Impact on approach: Would impact the scale and reach of new rewards initiatives.