Abstract: The present disclosure describes systems and methods for providing new credit files for individuals without a credit file by generating header information and assigning a personal identifier (or PIN) for the newly created header file without any negative impacts on the new credit file (such as a credit inquiry). The credit system can recommend the addition of new tradelines, such as through review of transaction data from financial institutions to identify a new tradeline, or recommending new credit cards curated for individuals with new credit files. The credit system can infer an open date for a new tradeline found in the transaction data by identifying the earliest transaction date for the set of transactions that correspond to a particular category.