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Lesson plan · Money After High School · Lesson 2

Taxes 101

Income, payroll, and sales taxes — and how filing a return works.

  • 45 minutes
  • Grades 9–12
  • Beginner
  • Activity: pairs
Present slidesWorksheet + keyStudent lesson

Objectives

Students will be able to:

  • Explain marginal and effective tax rates
  • Show why a raise never lowers take-home pay because of brackets
  • Describe how filing a tax return works

Materials

  • Slide deck and a projector
  • Worksheet (one per student)
  • Exit ticket slips (bottom of the worksheet)

45-minute agenda

  1. 0–5 min

    Warm-up

    Post: “True or false: a raise can push you into a higher tax bracket and make you take home less money.”

    Teacher note: False. Only the dollars above each bracket line are taxed at the higher rate.

  2. 5–15 min

    Direct instruction

    Present the lesson slides. Make sure students leave with these points:

    • Marginal rate = rate on your last dollar. Effective rate = total tax ÷ income.
    • A raise never lowers take-home pay because of brackets.
    • W-2 → tax return (Form 1040), usually due around April 15.
    • Filing can get withheld money back.
    • Rules change yearly — check irs.gov.

    Use the “See it” slide (How brackets work (simplified, made-up brackets)) to make the idea visual.

  3. 15–20 min

    Worked example

    Walk through “Aisha's first tax return” on the slides. Pause before the result and ask students to predict it.

  4. 20–32 min

    Bracket Buckets

    Format: pairs · 12 minutes

    1. Use made-up brackets (not real IRS rates): 10% on the first $10,000; 15% on income from $10,000 to $40,000; 25% on income above $40,000.
    2. Pairs fill “buckets” to find the tax on $30,000 and on $45,000.
    3. Pairs calculate each person's effective rate (total tax ÷ income) and marginal rate.
    4. Discuss: did the $45,000 earner lose money by earning more?

    What to look for: $30,000: tax $4,000, effective 13.3%, marginal 15%. $45,000: tax $6,750, effective 15%, marginal 25%. Earning $15,000 more still leaves $12,250 more after tax.

  5. 32–37 min

    Check for understanding

    Use the question slides — or run them as a Four Corners game. Answers:

    1. Getting a raise that moves you into a higher tax bracket can make your total take-home pay go down. — False
    2. About how much do you pay in total? — C. $54.13
    3. What happens when you file? — A. You get the difference back as a refund.
  6. 37–42 min

    Discussion

    • Why do you think the tax brackets myth is so common?
    • Should everyone be taught to file their own taxes in high school?
  7. 42–45 min

    Exit ticket

    Prompt: Why might a teen with a part-time job want to file a tax return even if they don't owe tax?

    Answer: To get back federal income tax that was withheld from their paychecks.

Differentiation

Common misconception

“Moving into a higher bracket means all my income is taxed at the higher rate.” Only the part above the line is.

Support

Draw the brackets as three stacked buckets and fill them together for $30,000.

Extension

Look up this year's real federal brackets on irs.gov and recalculate the tax on $30,000 (before deductions and credits, for comparison only).

Homework or make-up work

Students can complete the full interactive lesson — including its knowledge check — at learnwithflc.org/courses/money-after-high-school/taxes. No account needed; progress saves on their device.