Is classified by the U.S. government as an independent taxation authority by mutual agreement with the U.S. Congress. A common misconception is that residents of Puerto Rico do not have to pay federal taxes. Residents of the island pay federal taxes (import/export taxes, federal commodity taxes, social security taxes, etc.) and some even pay federal income taxes While most residents of the island do not pay federal income tax, they do pay federal payroll taxes (Social Security and Medicare), as well as Puerto Rico income taxes. In addition, because the cutoff point for income taxation is lower than that of the IRS code, and because the per-capita income in Puerto Rico is much lower than the average per-capita income on the mainland, more Puerto Rico residents pay income taxes to the local taxation authority than if the IRS code were applied to the island. Puerto Rico residents are eligible for Social Security benefits upon retirement. Puerto Rico is excluded from Supplemental Security Income (SSI). Puerto Rico receives less than 15% of the Medicaid funding it would be allotted as a state.