Systems and methods for generating customer transaction test data that simulates real world customer transaction data are disclosed. In one embodiment, a method may include (1) generating an account type reference file defining a plurality of account types; (2) generating a transaction type reference file defining a plurality of transaction types; (3) generating a plurality of customer test data records based on at least one of the plurality of parameters, wherein each customer test data record comprises a plurality of data fields, the data in each data field having a format that simulates real-world data; (4) verifying a uniqueness of each of the plurality of customer records; (5) generating a random number of accounts for each customer test data record based on the account type reference file; and (6) generating a random number of transactions for each account based on the transaction type reference file.