IMSS (Runa HR) is a compliance module integrated into the Runa payroll and HR platform that automates employer obligations to Mexico's Instituto Mexicano del Seguro Social (IMSS). The module connects directly to the IMSS IDSE, enabling automatic submission of employee registrations, terminations and salary changes without leaving the platform. It reduces manual data entry and minimizes risks of penalties by verifying SUA payments against EMA/EBA reports, generating TXT files for SUA import, and automating bimonthly salary base contribution (SBC) calculations. Employee profiles and Kardex records update automatically with every IMSS report, preserving audit trails and improving payroll accuracy. Notifications and reminders for IMSS declarations are sent after payroll runs or employment movements to keep administrators informed and compliant. By centralizing IMSS workflows alongside payroll, attendance and employee records, the module helps HR teams and accountants cut processing time, lower error rates, and avoid in-person IMSS visits for routine transactions.

The module addresses common pain points for Mexican employers, such as fragmented reporting processes, time-consuming SUA reconciliation, and the need for reliable documentation of affiliation movements. It supports generation of system-ready files for government systems, provides visibility into discrepancies between internal payments and official EMAs/EBA, and automates variability calculations tied to statutory contributions. Targeted at businesses that manage payroll internally or via payroll service providers, the IMSS integration streamlines operational tasks, reduces compliance risk, and improves the efficiency of HR and payroll teams.

Features & Benefits

• Automated registrations, terminations and salary changes: Reports employee alta, baja and salary change events directly to IMSS via the IDSE connection from within the Runa platform.
• SUA payment verification: Compares internal SUA-related payments with EMA and EBA emissions to identify differences and potential underpayments.
• TXT exports for SUA: Generates standardized TXT files for loading into the SUA application, supporting both affiliate movements and new employee data uploads.
• Automatic SBC (salary base contribution) calculations: Performs bimonthly SBC variability calculations automatically to comply with IMSS contribution rules.
• Employee movement tracking and Kardex updates: Maintains chronograms and Kardex files in each employee profile, updating them automatically after every IMSS report.
• IMSS obligation notifications: Sends reminders and alerts related to IMSS declarations after payroll or affiliation movements to keep teams aware of obligations.