| 11. | Marginal rates are what taxpayers owe on the last dollar of taxable income.
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| 12. | The marginal rate of substitution between perfect substitutes is likewise constant.
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| 13. | And one way ( to do that ) is to cut marginal rates,
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| 14. | Krugman dismissed the idea that current marginal rates are a drag on economic growth.
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| 15. | Then the marginal rate of substitution can be computed via partial differentiation, as follows.
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| 16. | The intermediate marginal rates would also be cut year by year over five years.
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| 17. | The marginal rate of substitution is either zero or infinite.
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| 18. | But effectively, the top marginal rate is actually 5 percent.
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| 19. | All capital gains is currently charged at a taxpayer's marginal rate of income tax.
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| 20. | Some 750.8 billion pesetas were awarded at the marginal rate.
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