def METHOD_NAME():
    tax_base = numpy.array([0, 10, 50, 125, 250])
    tax_scale = taxscales.MarginalRateTaxScale()
    tax_scale.add_bracket(0, 0)
    tax_scale.add_bracket(100, 0.1)
    tax_scale.add_bracket(200, 0.2)
    result = tax_scale.marginal_rates(tax_base)
    tools.assert_near(result, [0, 0, 0, 0.1, 0.2])