Should HDFC Bank prioritise co-branded cards like Swiggy HDFC Bank or proprietary cards like Millennia for new-to-credit customers?

Introduction

HDFC Bank has two very different ways to acquire young, new-to-credit (NTC) cardholders. One is co-branded cards with consumer platforms, most notably the Tata Neu HDFC Bank card and the Swiggy HDFC Bank card (with two new Swiggy variants launched in March 2026). The other is its own proprietary cards, such as Millennia, MoneyBack+ and the digital-first PayZapp Pixel card. Co-brands bring distribution and an in-built use case; proprietary cards keep the customer relationship and economics fully with the bank. The prompt asks: for the next two years, should HDFC Bank prioritise co-branded or proprietary cards for NTC acquisition? I'll clarify, classify the trade-off, understand both products, form a hypothesis, define metrics, design an experiment, plan analysis, set decision rules and recommend.

Step 1

Clarifying Questions (3 minutes)

• Context: What is the current split of new NTC cards between co-brand and proprietary?

Why it matters: Shows where momentum already is. Expected answer: Co-brands account for a large and rising share of NTC issuance, led by Tata Neu. Impact on approach: The question is partly whether to rebalance.

• Business: How are reward costs and revenues shared with partners?

Why it matters: Co-brand margins can be much thinner. Expected answer: The partner co-funds part of the rewards; the bank keeps interest and fee income but shares some interchange. Impact on approach: Profit per card likely differs significantly.

• User impact: How do retention and spend compare between the two after 12 months?

Why it matters: Acquisition volume means little without lasting usage. Expected answer: Co-brand cards have higher early activation but more "single-merchant" users; proprietary cards have lower activation but broader spend. Impact on approach: Lifetime value comparison is central.

• Technical: Can we underwrite NTC users equally well in both channels?

Why it matters: Partner data can improve or worsen risk. Expected answer: Partner channels bring more NTC users without bank data; proprietary channels use salary-account data. Impact on approach: Risk differs by channel, not just card.

• Resource: Are there constraints on partner exclusivity or marketing budgets?

Why it matters: Shapes feasible strategies. Expected answer: Partner contracts run for multiple years; marketing budget is fixed. Impact on approach: We optimise allocation, not a binary choice.