626. Ten Myths About the U.S. Tax System

Episode Summary

Executive Summary: Stephen Dubner interviews Jessica Riedel of the Manhattan Institute about U.S. debt, taxes, and political incentives. Riedel argues both parties sustain myths: tax cuts rarely pay for themselves, spending rises after cuts, deficits are driven more by spending than taxes, and the U.S. middle class is undertaxed relative to the developed world. She says entitlement reform and broader tax changes are unavoidable but politically avoided.

Main Topics: Jessica Riedel’s background and policy lens (Priority: 4/5): Riedel explains her path from budget nerd to influential policy analyst, including work at Heritage, the Senate, campaigns, and the Manhattan Institute, and frames herself as pragmatic, right-of-center, and nonpartisan. Federal debt and the political failure to confront it (Priority: 5/5): The conversation centers on the mounting federal debt, rising interest costs, and the claim that both parties avoid hard choices while promising voters unsustainable benefits. Tax myths from left and right (Priority: 5/5): Riedel lays out ten myths, arguing conservatives overstate tax cuts’ benefits while liberals overstate how much the rich and corporations can fund government alone. How Washington incentives distort policy (Priority: 4/5): Dubner and Riedel discuss how politicians pander, use narratives, and rely on public misunderstandings of taxes and benefits to win elections. Entitlement reform as the core fiscal challenge (Priority: 5/5): Riedel argues Social Security and Medicare are the biggest long-term drivers of deficits and will require higher taxes, higher retirement ages, and benefit reforms, including means testing. The middle class and consumption taxation (Priority: 4/5): She argues the middle class is undertaxed by international standards and that future fiscal repair likely requires some tax increase on middle earners, alongside simpler, broader-based taxation.

Key Arguments: Tax cuts almost never pay for themselves and do not reliably force Congress to cut spending; historically, spending tends to rise after tax cuts. The U.S. federal tax system is already highly progressive: the top earners pay most federal taxes, while the bottom 40% pay little or even negative income tax. Liberals overstate how much revenue can be raised from wealthy households and corporations alone; even confiscatory taxation would not close the deficit. The federal debt problem is driven more by spending growth than tax policy; since 2000, spending increases have outpaced tax cuts as a deficit driver. Social Security and Medicare are not self-funding in the way many believe; their future shortfalls are enormous and require political confrontation. Both parties maintain myths because those myths help them win elections and avoid telling voters the truth about tradeoffs. A durable solution requires bipartisan, all-of-the-above reform rather than a partisan approach focused only on taxes or only on spending.

Data Points: U.S. national debt: around $29 trillion - Current debt level as described in the episode Debt-to-GDP ratio: around 98% - Highest since just after World War II U.S. federal deficit last year: $1.8 trillion - Annual shortfall referenced in the explainer Interest on debt since 2021: rose from $350 billion to nearly $1 trillion - Shows accelerating cost of servicing debt Projected interest on debt: $2 trillion a decade from now - Future fiscal pressure Federal taxes collected: about 17% of GDP - Approximate historic level since 1960 Federal spending trajectory: from about 20% of GDP to 33% of GDP over 30 years - Riedel’s long-term warning Rise in deficits attributable to tax policy since 2000: about one third - Riedel’s estimate of deficit drivers Rise in deficits attributable to spending since 2000: about two thirds - Riedel’s estimate of deficit drivers Tax cuts since 2000: about 2% of GDP - Used to argue tax cuts are smaller driver than spending Tax cuts on the rich since 2000: about 0.6% of GDP - Subset of total tax cuts Increase in spending since 2000: about 6% of GDP - Compared with tax cuts in deficit growth 2017 corporate tax reform rank: from #1 highest in OECD to about #11 or #12 - After Trump’s corporate tax cut Top 1% combined federal tax rate: 33% - Riedel’s myth-busting on who pays Middle-class combined federal tax rate: 12% - Includes federal taxes beyond income tax Bottom group tax burden: roughly zero - Lowest earners pay little after credits and transfers Middle-class income tax rate: 3% - Median-earning family after deductions and credits Bottom 40% federal taxes in 2024: $60 billion - Total federal taxes paid by lower earners Top 20% federal taxes in 2024: $3.3 trillion - Share of federal taxes paid by top earners Share of income taxes paid by top 20%: 90% - Riedel’s summary of the tax burden pyramid Share of income taxes paid by second 20%: 13% - As stated in the transcript Share of income taxes paid by bottom groups: negative 3% collectively - Reflects credits and negative tax burden Social Security and Medicare cash deficit: $124 trillion over 30 years - Riedel’s estimate of entitlement shortfall Medicare value received by typical senior: about triple contributions - Illustrates imbalance in the program 2017 tax cuts cost to extend: about $4 trillion over 10 years - Current policy baseline Potential Trump tax promises: up to $6 trillion over 10 years - Including no tax on tips, overtime, or Social Security benefits Potential Trump-era defense and border spending: about $8 trillion - Riedel’s estimate of combined new fiscal pressure Billionaire wealth confiscation example: would fund about eight months of government spending once - Illustrates limits of taxing the rich alone

Pivotal Quotes: "I pull my hair out most days because I see two sides that are Dunning-Kruger-ing up and down, screaming at each other when both are making big mistakes." — Jessica Riedel: On partisan tax and budget debates being driven by overconfidence and misunderstanding "The middle class in America is dramatically undertaxed compared to everywhere else in the developed world." — Jessica Riedel: On why raising all needed revenue from the rich is mathematically impossible "If you want to know why we're facing big deficits, spending has historically been 20% of GDP. Revenues have historically been 17." — Jessica Riedel: On the structural gap between government spending and revenue

Implications: The episode argues that U.S. fiscal policy is constrained less by economics than by political incentives and public myths. For listeners, the message is that meaningful debt reduction likely requires both entitlement reform and broader tax changes, not just taxing the rich or cutting waste.