Definitions for "marginal tax rate"
see marginal rate
Benefits are added to your taxable income, and so will always be taxed at your highest rate. The rate of 31% is appropriate when half the benefit is taxed at 22%,but the other half takes your taxable income into the top bracket of 40%. NI ignored here.
is the rate of tax applicable to the income range which the person's taxable income is in.
Keywords:  cargo, marine, utility, insurance
Marginal utility Marine Cargo Insurance