This Selected Issues paper estimates the fiscal impact of demographic changes in Portugal and the euro area over the period 2015–2100. Under the baseline projections of the United Nations, Portugal is among the countries in the euro area that is expected to be most hurt by demographic developments. During 2015–2100, its population is expected to shrink by about 30 percent while the old-age dependency ratio is expected to more than double, driven mostly by low fertility, higher longevity, and migration outflows. Age-related public spending would increase by about 6 percentage points of GDP under the baseline over the period 2015–50, and the public debt path would become unsustainable in the absence of offsetting policies.
IMF Staff Country Reports

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