Market sizing: how many people in India hold a credit card

Estimate how many people in India use credit cards. ```hint People, not plastic Many holders carry more than one card. Work out which part of the population can actually get a card, then think about how ownership varies within that group. ``` ### Clarifying Questions - Should I count unique people or cards in circulation? - Does "use" mean holding a card, or having made a transaction recently, for example in the last month? - Do add-on cards issued to family members and company-issued corporate cards count? - Is the estimate for today, or for a future year? ### What a Strong Answer Covers - A precise definition of what is counted: unique people versus cards, holders versus active users - An equation that segments the population by the factors that gate card ownership in India - Labeled assumptions in round numbers, with the arithmetic shown - A sanity check from an independent angle, and a range rather than a single figure - Which assumption moves the answer most, and how a payments product team would use the number ### Follow-up Questions - How would your answer change if the question asked for cards in circulation instead of people? - Which single assumption moves your estimate the most, and how would you check it? - How fast do you expect this number to grow over the next few years, and what drives it?