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How to Convert Between Wealth and Income Tax
Paul Graham, May 2026. The conversion rate between wealth and income tax is about 20 — and most politicians don't know that.
When "Just 1%" Is Actually the Highest Tax Rate in the World — PG's New Essay, Decoded for Founders
Paul Graham published a new essay this week showing that a 1% wealth tax is mathematically equivalent to a 20% income tax — and most legislators don't know it. Here's the conversion formula, and why it matters for AI founders thinking about equity, jurisdiction, and investor conversations.
Paul Graham published a new essay this week. It's short — under 800 words — and it's about tax policy, not startups. Read it anyway. The core insight has direct consequences for how you think about equity, investor conversations, and capital formation in an AI company.
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The math politicians get wrong
The essay opens with a question most people have never thought to ask: if a government imposes a 1% annual wealth tax, what is that equivalent to in income tax terms?
PG's answer: 20%.
The conversion formula is simple — divide the wealth tax rate by the expected risk-free rate of return on capital (he uses 5%). So 1% ÷ 5% = 20%. A 1% wealth tax extracts the same amount from a capital holder each year as a 20% income tax 1.
He walks through the arithmetic cleanly. $100 invested at 5% earns $5 per year. Under a 20% income tax, you pay $1 and keep $4. Under a 1% wealth tax, you pay $1 on the starting balance and keep $4. Same outcome, same extraction rate.
The political point: no state legislator would casually propose adding 20 percentage points to their state's top income tax rate. Most people would recognize that as extraordinary — it would push the total US marginal rate past Denmark's. But legislators who describe a 1% wealth tax as "modest" are mathematically proposing exactly that 1.
"In the median case, US state politicians talking about adding a 'mere 1%' wealth tax are talking about causing the residents of their state to have the highest taxes in the world."
PG posted the essay on X (2026-05-26 published):
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The Hacker News discussion 2 surfaced a common pushback — that at a 5% assumed return, the math is optimistic — and PG addresses this in the essay's footnotes: he uses 5% as a simplified baseline for the conversion; 4% is more realistic historically, which would push the multiplier to 25x, not 20x. Either way, the order of magnitude holds.
Why this matters more to you than to incumbents
PG wrote this essay about politicians misunderstanding tax policy. But there's a second implication that goes unspoken in the essay, and it concerns founders directly.
Almost all founder wealth sits in equity — pre-liquidity, illiquid, with no income stream to fund a tax bill. A wealth tax applied to startup equity creates a real problem: the tax is computed on an asset whose value is hard to determine, can't be sold without dilution or a transaction event, and hasn't generated any cash. You'd owe 1% of your paper valuation as cash, every year, before any exit.
Under PG's conversion rate, an AI founder holding $10M in Series A equity at a 5% risk-free rate owes the equivalent of $200K/year in income tax — on income they don't have yet. That's a forcing function for premature liquidity events, secondary sales, or founder departures in the years before IPO.
Where this enters your decision-making right now:
- Jurisdiction selection: AI companies with significant founder equity holdings should track state-level wealth tax proposals (California has had multiple). PG's 20x multiplier makes the stakes of a "1% wealth tax" concrete when deciding where to domicile or stay.
- Investor conversations: When LPs or angels frame wealth taxes as minor friction on concentrated capital, the 20x conversion rate is a precise counterpoint. Investors holding long-term equity positions face the same math.
- Compensation structure: If you're designing equity grants for early employees, the shape of taxation matters to retention. Wealth taxes accelerate the pressure to liquidate, which reshapes how long employees stay concentrated in equity.
The deeper pattern: arithmetic as a power tool
What PG is doing here isn't just tax policy. He's using a simple equation to demolish a framing that has dominated public debate for decades. The "mere 1%" framing works because most people don't know how to convert between the two tax forms — legislators exploiting that gap can propose things they'd never dare propose if the income-tax equivalent were shown alongside the wealth-tax figure.
This is a repeatable move — identifying where a standard conversational framing obscures a simple but transformative calculation. Founders face versions of this constantly: CAC payback described in months vs. as a fraction of LTV, burn multiples compared across different revenue bases, dilution expressed as a percentage of current shares vs. post-money ownership.
In each case, the misleading frame isn't wrong — it's incomplete. The power is in knowing the conversion.
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Paul Graham's essay was published 2026-05-26. 1
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