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Demystifying the American Tax System

Making the U.S. tax code comprehensible to the 90% of people who hate thinking about it. Organized around life events when taxes actually matter, with recurring case study characters whose situations evolve across units.

20 Units
1-2 weeks per unit
Curriculum Map

What You Will Learn

Life Events Framework

Taxes organized by when you encounter them: first job, marriage, homeownership, children, self-employment, investing, retirement.

Four Dimensions of Flexibility

Understand why some taxpayers have choices that others do not: timing, deduction elasticity, characterization, and realization.

The Political Economy of Taxes

Every tax rule has winners and losers. Learn who benefits, who pays, and why the code is intentionally complex.

All Units

0
Quick Reference
Why the Tax Code Feels Impossible
The U.S. tax code is 75,000 pages long. This is not an accident. Understanding why taxes feel impossible is the first step toward making them comprehensible.
  • •Understand why the tax code is intentionally complex rather than accidentally so
  • •Identify the three core tensions that make tax policy inherently political
  • •Recognize the life events framework as a practical entry point into tax understanding
  • +1 more objectives
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1
1-2 weeks
How Income Gets Taxed: The W-2 Baseline
Maya Chen just got her first real paycheck, and about a quarter of it is missing. Where did it go? Understanding the journey from gross income to tax liability is the foundation of tax literacy.
  • •Trace the path from gross income to tax liability through AGI, deductions, and taxable income
  • •Calculate marginal and effective tax rates and explain why they differ
  • •Understand how withholding removes tax decisions from most employees
  • +1 more objectives
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2
1-2 weeks
FICA: The Hidden Tax
Maya and Alex both earn about $50,000, but Alex pays thousands more in taxes. The difference is hidden in plain sight on every pay stub: the payroll taxes that fund Social Security and Medicare.
  • •Calculate Social Security and Medicare taxes for both employees and self-employed individuals
  • •Explain why the 'employer match' is economically paid by workers, not employers
  • •Analyze the regressive structure of payroll taxes, including the wage base cap
  • +1 more objectives
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3
1-2 weeks
The Standard Deduction vs. Itemizing
Marcus and Linda Williams are debating whether to itemize or take the standard deduction. The answer reveals how the 2017 tax changes transformed who benefits from the deduction system.
  • •Calculate when itemizing deductions exceeds the standard deduction
  • •Identify the major itemized deductions: SALT, mortgage interest, and charitable contributions
  • •Explain the SALT cap and its political origins
  • +1 more objectives
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4
1-2 weeks
Marriage and Filing Status
Maya and Alex are getting married. Before the wedding, they discover that their marriage will change their tax situation in ways that seem designed by committee, because it was.
  • •Calculate the tax implications of different filing statuses: single, married filing jointly, married filing separately, and head of household
  • •Determine when a couple faces a marriage penalty versus a marriage bonus
  • •Explain the historical origins of joint filing and the Poe v. Seaborn decision
  • +1 more objectives
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5
1-2 weeks
Income Shifting in the Family
A father's generous gift reveals the complex web of rules that prevent families from minimizing taxes through income shifting, while creating planning opportunities for those who understand the system.
  • •Explain why earned income cannot be assigned to family members for tax purposes
  • •Apply gift tax exclusion rules and understand basis carryover for gifted property
  • •Analyze how the kiddie tax prevents income shifting to minor children
  • +1 more objectives
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6
1-2 weeks
The Tax Benefits of Homeownership
Maya and Alex take the plunge into homeownership, discovering that the tax code rewards them with deductions unavailable to renters, raising questions about fairness and housing policy.
  • •Calculate the tax savings from mortgage interest and property tax deductions
  • •Explain how the SALT cap limits property tax deductions in high-tax states
  • •Analyze the treatment of points and loan origination fees
  • +1 more objectives
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7
1-2 weeks
Selling Your Home
After 30 years in their family home, Marcus and Linda Williams sell for a $400,000 profit and pay zero tax, illustrating one of the most generous provisions in the entire tax code.
  • •Apply the Section 121 exclusion to calculate tax-free gain on home sales
  • •Evaluate ownership and use tests for full and partial exclusions
  • •Analyze special rules for job changes, health issues, and unforeseen circumstances
  • +1 more objectives
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8
1-2 weeks
The Tax Benefits of Parenthood
Maya and Alex welcome their first child and discover a complex web of tax benefits, from credits to FSAs to filing status changes, each with its own rules and limitations.
  • •Calculate the Child Tax Credit and understand phaseout rules
  • •Compare the Dependent Care Credit with the Dependent Care FSA
  • •Analyze Head of Household status requirements and benefits
  • +1 more objectives
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9
1-2 weeks
Education Costs
As Maya and Alex look toward Emma's future, they discover that the tax code provides powerful tools for education savings, but choosing the right strategy requires navigating a maze of overlapping benefits.
  • •Compare 529 plans with taxable investment accounts for education savings
  • •Apply American Opportunity Tax Credit and Lifetime Learning Credit rules
  • •Analyze when scholarships become taxable income
  • +1 more objectives
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10
1-2 weeks
The Gig Economy and Schedule C
When Alex Rivera goes full-time self-employed, the tax code reveals its hidden flexibility. Schedule C becomes a portal to deductions unavailable to W-2 employees, but with this power comes complexity, compliance burden, and the ever-present question: is this expense really for business?
  • •Explain the tax implications of self-employment versus W-2 employment
  • •Identify 'ordinary and necessary' business expenses under IRC §162
  • •Calculate self-employment tax and understand the employer/employee split
  • +2 more objectives
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11
1-2 weeks
The S-Corp Election
As Alex's jewelry business scales to $150,000 in profits, a tax advisor poses a strange question: 'How much do you want to pay yourself?' The answer reveals one of the tax code's most significant planning opportunities—and one of its most contentious audit battlegrounds.
  • •Explain why sole proprietors elect S-Corporation status as income grows
  • •Distinguish between salary and distributions in an S-Corp structure
  • •Calculate the self-employment tax savings from the S-Corp election
  • +2 more objectives
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12
1-2 weeks
Business Deductions and the §199A Passthrough
James Chen's small business strategies reveal the most significant tax change of 2017: the Qualified Business Income deduction. This 20% reduction for pass-through income sounds simple, but its web of limitations, phase-outs, and exceptions creates winners and losers in surprising ways.
  • •Calculate the Qualified Business Income (QBI) deduction under IRC §199A
  • •Identify the taxable income thresholds that phase out the deduction
  • •Distinguish Specified Service Trades or Businesses (SSTBs) from other businesses
  • +2 more objectives
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13
1-2 weeks
Capital Gains and the Realization Principle
Dr. Sarah Okonkwo begins building an investment portfolio and discovers the tax code's fundamental distinction: income from work and income from wealth are taxed very differently. Two people with identical net worth can face radically different tax obligations, depending on whether they sell or hold.
  • •Distinguish between ordinary income and capital gains and their different tax rates
  • •Explain the realization principle and why wealth accumulation is not taxed until sale
  • •Calculate short-term versus long-term capital gains tax implications
  • +2 more objectives
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14
1-2 weeks
Retirement Accounts—Legal Tax Shelters
Marcus and Linda Williams face the retirement planning questions that define middle-class tax strategy: Should we contribute to traditional or Roth accounts? How much can we shelter? And what happens when the government forces us to start withdrawing? Their decisions will determine whether decades of compound growth face full taxation or escape it entirely.
  • •Distinguish between traditional (pre-tax) and Roth (after-tax) retirement contributions
  • •Compare 401(k), IRA, SEP-IRA, and Solo 401(k) account types and their contribution limits
  • •Explain the concepts of tax deferral versus tax-free growth
  • +2 more objectives
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15
1-2 weeks
Health Care and Taxes
The tax code quietly spends hundreds of billions subsidizing health care, but the benefits flow upward. Dr. Okonkwo discovers that the same system that helps her also leaves millions behind.
  • •Understand how the tax code subsidizes health care through exclusions, deductions, and credits
  • •Analyze the triple tax advantage of Health Savings Accounts and who can benefit
  • •Evaluate how tax policy shapes health insurance decisions and access
  • +1 more objectives
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16
1-2 weeks
The Tax Consequences of Divorce
When marriages end, the tax code becomes a silent third party in negotiations. Maya and Alex face a hypothetical we hope never happens, revealing how divorce rewrites every tax assumption.
  • •Understand how filing status changes in the year of divorce and its tax implications
  • •Analyze the tax treatment of property transfers incident to divorce under Section 1041
  • •Compare the pre-2019 and post-2018 alimony rules and explain why they changed
  • +1 more objectives
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17
1-2 weeks
How the Wealthy Pay Less (And Why It's Legal)
Warren Buffett famously noted he pays a lower tax rate than his secretary. This is not a bug in the tax code. It is how the system is designed. Understanding why reveals who writes the rules.
  • •Explain the Buy-Borrow-Die strategy and why it is tax-efficient for the ultra-wealthy
  • •Analyze how stepped-up basis at death eliminates capital gains taxes on appreciated assets
  • •Evaluate the policy arguments for and against tax preferences that primarily benefit the wealthy
  • +1 more objectives
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18
1-2 weeks
Estate Planning Basics
James Chen built a business over thirty years. Now he must decide: give it away while living, or pass it on at death? The choice carries consequences measured in millions of dollars.
  • •Understand the gift tax system including the annual exclusion and lifetime exemption
  • •Analyze how the unified credit system connects gift and estate taxes
  • •Evaluate the stepped-up basis rule and its impact on wealth transfer strategies
  • +1 more objectives
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19
1-2 weeks
The Tax Code as Policy Tool
Every tax preference is a policy choice. Every deduction picks winners. The tax code is not a neutral tool for raising revenue. It is a statement of values, written in sections and subsections.
  • •Explain what tax expenditures are and how they function as hidden spending
  • •Analyze who benefits from major tax preferences and evaluate their distributional effects
  • •Evaluate why the tax code remains complex despite widespread desire for simplification
  • +1 more objectives
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An open educational resource for students and adults. Based on the Geier textbook and contemporary tax policy research.