 RTI International has developed a web-based sample enrollment tool for IDA project staff at each site to use in administering informed consent, a baseline questionnaire, and random assignment for each study-eligible applicant. The studys 30-minute baseline questionnaire gathered information in the following survey modules: demographics, use of financial services, current residence, employment, household income and expenses, financial experience and assets, debts, material hardship, social engagement and outlook, and locating information for purposes of re-contacting the respondent for follow-up surveys. Site-provided administrative data will provide additional baseline covariates and for treatment cases descriptive information on IDA openings, deposits, withdrawals matched and unmatched, and balances. 