| http://www.w3.org/ns/prov#value | - Or perhaps the taxpayer got married (marriage can often be a tax disaster for some low income taxpayers, although it can generate tax bonuses for other low income taxpayers!.) State refundable credits as well as means-tested programs such as Medicaid, Section (8) housing subsidies, heating assistance, etc. can further amplify the federal marginal tax rate to the point where the total effective mar
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