Winner-Takes-All: Corporate Tax Avoidance and Wealth Concentration in the United States
Why has comparative political economy overlooked corporate taxation as a mechanism of wealth concentration in advanced capitalist democracies? This paper argues that the erosion of effective corporate tax in the United States is not merely a fiscal shift but an institutional mechanism that amplifies the concentration of economic power. Ownership of corporate equity is extremely concentrated, so when corporate taxes are weakened, the gains flow to a narrow elite, accelerating the divergence between the rate of return on capital and the rate of economic growth. Using Orbis Historical data for 10,000 US corporations per year from 2001 to 2024, we document three interlocking patterns. First, profit concentration has surged: the top 1 per cent of corporate groups now capture 60 per cent of all positive after-tax profits, up from 45 per cent before the 2017 Tax Cuts and Jobs Act, while the top 0.1 per cent capture 20 per cent. Second, effective tax rates are systematically lower for knowledge-intensive corporate groups than for traditional sectors, and this gap widened after the TCJA. Third, intangible assets, the infrastructure of profit shifting, are concentrated in precisely the corporate groups whose tax rates are lowest and whose profit shares are rising fastest. We exploit two policy shocks, the 2017 TCJA and the 2022 Section 174 R&D capitalisation rule, to provide suggestive evidence that tax policy shapes the distribution of after-tax profits. Forensic case studies of Alphabet, Apple, Microsoft, and Tesla trace the legal-corporate mechanisms through which lightly taxed profits convert, via concentrated equity ownership, into personal wealth at the very top. We argue that corporate profit taxation is a pre-distributional constraint on concentrated economic power, functioning as structural regulation where antitrust has failed. Our findings identify an overlooked upstream mechanism through which concentrated economic power is produced before democratic processes can redistribute it.
| Tier | 2001 | 2024 | Total Growth | CAGR |
|---|---|---|---|---|
| Next 9% (P90–P99) | $0.4B | $1.6B | +300% | 6.2% |
| Top 1% (P99–100) | $5.4B | $30.0B | +456% | 7.7% |
| Top 0.1% (P99.9–100) | $18.6B | $140.0B | +653% | 9.2% |
| Turnover | Profit | Tax Expense | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Year | Min | Max | Mean | SD | Obs | Min | Max | Mean | SD | Obs | Min | Max | Mean | SD | Obs |
| 2001 | 13 | 370,525 | 1,567 | 9,437 | 10,000 | −100,292 | 42,553 | 76 | 1,708 | 10,000 | −12,243 | 21,565 | 54 | 528 | 10,000 |
| 2002 | 13 | 359,704 | 1,538 | 9,452 | 10,000 | −72,987 | 35,891 | 103 | 1,497 | 10,000 | −3,543 | 97,099 | 95 | 1,207 | 10,000 |
| 2003 | 13 | 405,053 | 1,591 | 10,091 | 10,000 | −6,695 | 54,620 | 168 | 1,439 | 10,000 | −5,770 | 17,866 | 59 | 461 | 10,000 |
| 2004 | 13 | 484,752 | 1,744 | 11,165 | 10,000 | −26,381 | 68,640 | 188 | 1,617 | 10,000 | −7,600 | 26,482 | 66 | 551 | 10,000 |
| 2005 | 13 | 577,857 | 1,867 | 12,073 | 10,000 | −34,096 | 95,675 | 212 | 1,891 | 10,000 | −10,966 | 37,512 | 70 | 631 | 10,000 |
| 2006 | 9 | 569,954 | 1,891 | 12,274 | 10,000 | −23,508 | 105,115 | 240 | 1,988 | 10,000 | −11,336 | 43,514 | 70 | 714 | 10,000 |
| 2007 | 9 | 591,988 | 1,966 | 13,000 | 10,000 | −45,158 | 108,408 | 196 | 1,864 | 10,000 | −8,279 | 49,259 | 72 | 980 | 10,000 |
| 2008 | 7 | 671,118 | 2,005 | 13,869 | 10,000 | −77,476 | 121,784 | 65 | 2,234 | 10,000 | −36,539 | 55,749 | 44 | 881 | 10,000 |
| 2009 | 7 | 592,529 | 1,842 | 11,950 | 10,000 | −107,009 | 150,228 | 111 | 2,390 | 10,000 | −9,217 | 22,714 | 38 | 546 | 10,000 |
| 2010 | 7 | 588,271 | 1,936 | 12,536 | 10,000 | −21,453 | 76,343 | 191 | 1,645 | 10,000 | −4,884 | 32,433 | 59 | 567 | 10,000 |
| 2011 | 7 | 652,885 | 2,094 | 13,705 | 10,000 | −23,688 | 109,793 | 233 | 2,267 | 10,000 | −16,121 | 45,010 | 63 | 710 | 10,000 |
| 2012 | 8 | 618,268 | 2,141 | 13,694 | 10,000 | −39,293 | 124,020 | 235 | 2,537 | 10,000 | −45,947 | 121,074 | 81 | 1,657 | 10,000 |
| 2013 | 7 | 632,377 | 2,172 | 13,597 | 10,000 | −6,716 | 106,789 | 275 | 2,413 | 10,000 | −61,281 | 107,453 | 74 | 1,593 | 10,000 |
| 2014 | 7 | 632,644 | 2,212 | 13,397 | 10,000 | −12,451 | 134,507 | 278 | 2,465 | 10,000 | −3,942 | 128,711 | 97 | 1,628 | 10,000 |
| 2015 | 7 | 644,256 | 2,618 | 13,461 | 10,000 | −26,343 | 132,531 | 272 | 2,610 | 10,000 | −9,236 | 155,341 | 100 | 1,916 | 10,000 |
| 2016 | 7 | 631,590 | 2,617 | 13,486 | 10,000 | −11,060 | 120,993 | 296 | 2,412 | 10,000 | −30,465 | 119,822 | 93 | 1,532 | 10,000 |
| 2017 | 6 | 623,250 | 2,676 | 13,870 | 10,000 | −24,287 | 103,507 | 310 | 2,294 | 10,000 | −65,044 | 103,336 | 77 | 1,655 | 10,000 |
| 2018 | 5 | 626,475 | 2,745 | 14,535 | 10,000 | −25,210 | 91,281 | 310 | 2,331 | 10,000 | −9,659 | 81,785 | 72 | 1,205 | 10,000 |
| 2019 | 5 | 632,495 | 2,772 | 14,841 | 10,000 | −13,577 | 126,272 | 330 | 2,553 | 10,000 | −239,918 | 67,495 | 18 | 3,003 | 10,000 |
| 2020 | 4 | 636,531 | 2,621 | 14,884 | 10,000 | −35,088 | 105,324 | 226 | 2,446 | 10,000 | −210,588 | 105,557 | 23 | 2,763 | 10,000 |
| 2021 | 4 | 648,698 | 2,890 | 16,398 | 10,000 | −5,840 | 129,572 | 421 | 3,436 | 10,000 | −306,164 | 126,485 | −22 | 4,392 | 10,000 |
| 2022 | 3 | 615,216 | 2,983 | 16,991 | 10,000 | −32,761 | 127,933 | 348 | 2,872 | 10,000 | −9,132 | 310,212 | 179 | 4,063 | 10,000 |
| 2023 | 2 | 630,749 | 2,904 | 16,988 | 10,000 | −11,630 | 123,991 | 341 | 3,019 | 10,000 | −290,742 | 31,152 | 20 | 3,047 | 10,000 |
| 2024 | 1 | 648,125 | 2,937 | 17,553 | 10,000 | −14,219 | 123,485 | 379 | 3,563 | 10,000 | −324,257 | 29,749 | −43 | 4,300 | 10,000 |
Note: All figures in millions of 2024 USD. Sample of 10,000 U.S. corporations per year. Turnover = total operating revenues. Profit = net income after tax. Tax expense = current + deferred corporate income tax. Negative values indicate losses (profit) or net tax benefits from carryforwards/credits (tax). Notable patterns: (1) 2008–2009 shows financial crisis impact (profit decline, profit volatility spike); (2) Post-2018 shows TCJA effects (tax expense decline, increased volatility); (3) 2019–2021 extreme tax volatility reflects pandemic accounting adjustments and policy responses. Source: Orbis Historical. Author’s calculations.
| Sector | Label | Description & Key NACE Rev. 2 Codes |
|---|---|---|
| Knowledge Sector | ||
| 1 | Tech | ICT manufacturing (26), telecommunications (61), IT services (62) data processing/hosting (63). Includes e-commerce platforms and digital content publishing. Tesla reclassified as Tech due to battery/software focus. |
| 2 | Pharma / Life Sciences | Pharmaceuticals (21), wholesale of pharmaceutical goods (4646), biotechnology R&D (7211). |
| 3 | Other Knowledge-Intensive | Publishing & media (58–60), legal/accounting (69), management consulting (70) architecture/engineering (71), scientific R&D (72), advertising (73), professional services (74). |
| Traditional Sector | ||
| 4 | Commodities / Retail | Agriculture/forestry (01–03), food/beverage (10–12) textiles/apparel (13–15), motor trade (45), wholesale (46), retail (47). |
| 5 | Industry / Manufacturing | Wood/paper (16–18), chemicals (20), rubber/plastics (22), metals (24–25) machinery (27–28), transport equipment (29–30), furniture (31), other manufacturing (32–33). Excludes pharmaceuticals (21) and ICT equipment (26). |
| 6 | Other Services | Mining/extraction (05–09), utilities (35), water/waste (36–39), construction (41–43), transport/postal (49–53), accommodation/food (55–56), real estate (68), other services (75–99). |
| Excluded from Main Analysis | ||
| 7 | Financial Sector | Banking (64), insurance (65), auxiliary financial services (66), plus holding companies and investment funds identified by name matching. Excluded from sectoral comparisons due to distinct business model and regulatory environment. |
The figures in this appendix present implied returns on assets (r) for the most profitable U.S. corporate groups alongside real GDP growth (g) over the 2001–2024 period. These estimates are derived from our Orbis Historical panel by computing after-tax profit as a share of total assets for corporations at different points in the profitability distribution.
The results show that the top corporate groups earn returns that consistently exceed GDP growth by a factor of 3–5×, consistent with Piketty’s r > g framework and with the scale-dependent returns documented by (Saez et al., 2023). Knowledge-sector corporate groups show the highest returns, with implied r of approximately 10–15 percent compared to real GDP growth of 2–3 percent. The tax channel documented in the main text amplifies this divergence: by lowering the effective tax rate on the highest-returning assets, corporate tax erosion widens the gap between r and g for precisely the corporations and shareholders where wealth concentration is most extreme.
The Tax Cuts and Jobs Act, enacted in December 2017, introduced several major reforms to the U.S. corporate tax system:
- Statutory rate cut: The federal corporate income tax rate was reduced from 35 percent to 21 percent, effective from 2018.
- Territorial system: The United States moved from a worldwide system (taxing global income with foreign tax credits) to a partially territorial system, with a participation exemption for certain foreign-source dividends.
- GILTI (Global Intangible Low-Taxed Income): A minimum tax on certain foreign earnings designed to limit the benefits of holding IP in low-tax jurisdictions.
- FDII (Foreign-Derived Intangible Income): A preferential deduction for income derived from serving foreign markets using U.S.-based IP, effectively reducing the tax rate on qualifying income to approximately 13.1 percent.
- BEAT (Base Erosion and Anti-Abuse Tax): A minimum tax targeting deductible payments made by U.S. corporations to foreign related parties.
- Bonus depreciation: Near-full expensing of many tangible investments (100 percent bonus depreciation), phasing down after 2022.
- Transition tax (Section 965): A one-off deemed repatriation of accumulated foreign earnings, generating large one-time tax charges in 2017–2018 financial statements.
Beginning on 1 January 2022, U.S. corporations were required to capitalise and amortise research and development expenditures rather than deducting them immediately:
- Before 2022: Corporations could deduct all R&D spending immediately, reducing taxable income in the year the expenditure was incurred.
- From 2022: R&D costs must be amortised over 5 years for research conducted in the United States and 15 years for research conducted abroad.
- Immediate effect: In 2022, R&D-intensive corporations lost approximately 80–90 percent of the annual tax benefit they had previously received from immediate expensing.
- Accounting treatment: Under applicable accounting standards, corporations were required to recognise most of this change in their 2022 financial statements, including adjustments to deferred tax assets. This produced a large, visible spike in effective tax rates and a corresponding decline in after-tax profits for R&D-intensive corporate groups.
The Section 174 change provides a natural experiment for our analysis. Because the shock was concentrated among knowledge-sector corporate groups with high R&D expenditures, it allows us to observe what happens to profit concentration when the tax constraint on the most profitable corporations is temporarily tightened.
