Many migrants do not stay in their host countries permanently. On average, 15% of migrants leave their host country in a given year, many of whom will return to their home countries. Temporary migration benefits sending countries through remittances, investment, and skills accumulation. Receiving countries benefit via increases in their prime-working age populations while facing fewer social security obligations. These fiscal benefits must be balanced against lower incentives to integrate and invest in host country specific skills for temporary migrants.