Totalization agreements solve two problems that arise when workers move between countries: paying social security taxes to two countries on the same earnings, and losing benefit eligibility because their work history is split. These agreements coordinate social security systems between participating countries.
Eliminating Double Taxation
Without a totalization agreement, a worker might owe social security taxes in both their home country and work country simultaneously. Agreements establish rules for which country's system applies, typically based on where work is performed and assignment duration.
Combining Work Credits
Many social security systems require minimum contribution periods for benefit eligibility. Totalization agreements allow workers to combine work credits from both countries to qualify for benefits. Each country then pays a partial benefit based on work performed in that country.
Certificate of Coverage
Workers claiming exemption under a totalization agreement need a Certificate of Coverage from their home country's social security authority. This document proves they remain covered by their home country's system and are exempt from the host country's social security taxes.