March 31st, 2015, 6:35 pm
Not my field, but generally there is an aging effect. If a credit card account is new, the delinquency rate can be fairly high. Accounts that are older have a lower default rate, as the problem accounts are gradually weeded out.Also there are different type of accounts in terms of profitability: with some you make money on the lending, with others you only get fee income.So I would model these various groups separately.