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Public conceptDeductions and rates

Effective tax rate

The total modeled tax divided by the included gross income.

In one sentence

The effective rate averages the modeled tax across the included gross income.

Model

total modeled tax ÷ included gross income = effective rate

Worked example

$8,000 of modeled tax on $80,000 of included income is a 10% effective rate in this estimator.

What to notice

Follow this mechanism in a related lesson, where the same calculator engine exposes every intermediate value.

Common misconception

The effective rate is an average for the modeled income, not the rate on the next dollar.

IRS 2025 rate schedules

See it in motion

Related course lessons