Mexican Afore Accounts: IRS Reporting for US-Mexico Expats

Mexico's mandatory pension system uses Afore accounts (Administradoras de Fondos para el Retiro), which are individual retirement savings accounts managed by private financial companies and funded by mandatory employer and employee contributions. The US-Mexico tax treaty addresses pensions, and Social Security contributions and benefits under Mexico's IMSS (Instituto Mexicano del Seguro Social) system are generally covered. For US citizens working in Mexico through a Mexican employer, Afore contributions (both employee and employer portions) may create US reporting and tax obligations — employer contributions could be treated as taxable income and contributions generally aren't deductible on the US return without a specific treaty provision explicitly covering them. Afore accounts must be reported on FBAR if the aggregate foreign account threshold is met. The US-Mexico totalization agreement covers Social Security obligations, which reduces (but doesn't eliminate) the cross-border social insurance complexity.