Barack Obama’s promise to cut taxes for 95% of American’s not only ignores the fact that the lowest 40% don’t pay taxes (but would get a redistribution of wealth from everyone else) but also seems to be a little less than accurate [1]:
Because Mr. Obama’s tax credits are phased out as incomes rise, they impose a huge “marginal” tax rate increase on low-income workers. The marginal tax rate refers to the rate on the next dollar of income earned. As the nearby chart illustrates, the marginal rate for millions of low- and middle-income workers would spike as they earn more income.
Some families with an income of $40,000 could lose up to 40 cents in vanishing credits for every additional dollar earned from working overtime or taking a new job. As public policy, this is contradictory. The tax credits are sold in the name of “making work pay,” but in practice they can be a disincentive to working harder, especially if you’re a lower-income couple getting raises of $1,000 or $2,000 a year.
[2]