My guess is from sources like credit card or loan applications. https://www.nerdwallet.com/blog/credit-cards/report-income-credit-card-application/ https://www

My guess is from sources like credit card or loan applications. https://www.nerdwallet.com/blog/credit-cards/report-income-credit-card-application/ https://www.nerdwallet.com/blog/credit-cards/report-income-c...