<Li> Negative (income) </Li> <Tr> <Td> International (show) <Ul> <Li> Financial transaction tax </Li> <Li> Currency transaction tax </Li> <Li> Tobin tax </Li> <Li> Spahn tax </Li> <Li> Tax equalization </Li> <Li> Tax treaty </Li> <Li> Permanent establishment </Li> <Li> Transfer pricing </Li> <Li> European Union FTT </Li> <Li> Foreign revenue rule </Li> </Ul> </Td> </Tr> <Ul> <Li> Financial transaction tax </Li> <Li> Currency transaction tax </Li> <Li> Tobin tax </Li> <Li> Spahn tax </Li> <Li> Tax equalization </Li> <Li> Tax treaty </Li> <Li> Permanent establishment </Li> <Li> Transfer pricing </Li> <Li> European Union FTT </Li> <Li> Foreign revenue rule </Li> </Ul> <Li> Financial transaction tax </Li>

Social security is an example of a progressive tax