Tax Concepts

Marginal Tax Rate

A marginal tax rate is the rate that applies to the next dollar of taxable income.

Quick answer

A marginal tax rate is the rate that applies to the next dollar of taxable income.

It matters because planning decisions often turn on the rate that applies to the next increment of income or deduction, not the average rate on the whole return.

An extra deduction is often valued at the taxpayer's marginal tax rate rather than the overall effective rate.

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Plain-English Definition

What Marginal Tax Rate means

A marginal tax rate is the rate that applies to the next dollar of taxable income.

Why it matters It matters because planning decisions often turn on the rate that applies to the next increment of income or deduction, not the average rate on the whole return.
Simple example An extra deduction is often valued at the taxpayer's marginal tax rate rather than the overall effective rate.
Related Questions

Questions people ask about Marginal Tax Rate

What does Marginal Tax Rate mean?

A marginal tax rate is the rate that applies to the next dollar of taxable income.

Why does Marginal Tax Rate matter?

It matters because planning decisions often turn on the rate that applies to the next increment of income or deduction, not the average rate on the whole return.

What is a simple example of Marginal Tax Rate?

An extra deduction is often valued at the taxpayer's marginal tax rate rather than the overall effective rate.

When should I ask a CPA about Marginal Tax Rate?

Ask a CPA when the term affects your tax bill, estimated payments, deductions, or a planning move before year end.

How is Marginal Tax Rate different from Effective Tax Rate?

Marginal Tax Rate means A marginal tax rate is the rate that applies to the next dollar of taxable income. Effective Tax Rate means An effective tax rate is the average rate of tax paid across total taxable income or total income, depending on the context used. The difference is that they apply to different tax, accounting, or business situations and should not be treated as interchangeable.

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