This study provides the first empirical evidence documenting intra-civil service corruption in developing countries. This form of corruption is defined as financial leakage within the payroll system, where salaries for low-ranking civil servants are diverted through practices such as unauthorized deductions, bribery, and wage misappropriation. Drawing on a nationally representative survey of 2,200 civil servants in the Democratic Republic of Congo (DRC), we find that 36% of respondents reported experiencing at least one form of payroll misconduct. Using nighttime light density as both a proxy for financial service access and an instrument for system enrollment, we find that the introduction of an electronic payroll system reduced payroll corruption by over one-third, with stronger effects—up to 51%—in sectors with initially high corruption levels. These results highlight the potential of e-governance reforms to improve transparency and accountability within government structures, reduce exploitation of frontline workers, and enhance public service delivery.