How Wealth Taxes Could Technically Work
What if tax evasion were structurally self-defeating, and the entire federal tax code fit on a cocktail napkin?
Your tax equals your share of national wealth, times federal spending. One formula. One rate. One ledger.
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Replace every federal tax with a single proportional wealth tax, recorded on a public ledger, enforced through the duty of control. Everything the book argues flows from these four ideas.
One tax replaces every federal tax now collected: income, payroll, corporate, capital gains, estate. The tax code, its Treasury regulations, and the seventy-thousand-page research library built around them all become obsolete. A formula simple enough to fit on a napkin replaces them.
A tamper-evident record of all wealth and who controls it. County land offices have tracked property this way for centuries. Distributed ledger technology extends the same principle to every asset that can be owned, valued, and transferred.
Whoever can direct, benefit from, exclude others from, or transfer an asset bears the duty to pay. Where control can be revoked by a superior authority, the duty travels up. Trace upward until you reach a human who cannot be overridden. That human pays.
Today, hiding wealth is advantageous: the concealed asset is off the tax rolls and still yours. Under this system, hiding wealth means risking that someone else registers it first and holds the superior claim. Above the de minimis threshold, you register your wealth or someone else can.
What if tax evasion were structurally self-defeating, and the entire federal tax code fit on a cocktail napkin?
Every dollar of wealth is as visible as every acre of land. The billionaire is unable to hide behind shell companies any more than a farmer can hide his fields. The tax you owe is calculated automatically against the share of national wealth you control. Paying taxes on wealth is the ultimate claim to ownership, because refusing to do so opens the claim to challengers who will.
The technology exists. The precedents exist. The formula is right there. What is missing is the political will to build it, and the understanding that makes political will possible. That is what this book provides.
What would it look like if we replaced all federal taxes with a single, proportional wealth tax?
No income tax. No payroll tax. No corporate tax, estate tax, capital gains tax, or any of the other federal levies. One tax. One rate. One ledger.
The design rests on four pillars:
One Tax. A single proportional wealth tax replaces every federal tax currently collected. The Internal Revenue Code, its Treasury regulations, and the seventy-thousand-page tax-research library built around them all become obsolete. In their place: a formula simple enough to fit on a napkin. Your tax equals your share of the nation's wealth multiplied by federal spending. That is it. All wealth is taxed annually, the same way property taxes work on land. The system does not distinguish between realized and unrealized gains, or between earned and unearned income. You control it, you pay on it.
One Ledger. A public record of all wealth, who controls it, and what they owe. Think of county land records, which have tracked property ownership for centuries. Now extend that principle to all forms of wealth: stocks, bonds, business equity, intellectual property, cryptocurrency, art, vehicles, and everything that can be exchanged, valued, and transferred. The ledger is the authoritative record. Registration is the strongest claim to ownership the system offers.
One Principle. Those who control wealth pay proportionally to what they control. Not based on income, which can be manipulated, deferred, and hidden, but on control. If you can direct an asset, benefit from it, exclude others from it, or transfer it, you bear the duty to pay your share. This is the "duty of control," and it follows the wealth wherever it goes, through whatever structures are placed around it.
One Consequence. The incentive structure inverts. Today, hiding wealth is advantageous: the concealed asset is off the tax rolls and still yours. Under this system, hiding wealth means risking that someone else registers it first and holds the superior claim. If you control wealth above the de minimis threshold, you register it. If you do not, anyone else with evidence of control can. Chapter 7 details how the ledger works, including thresholds and how competing claims are resolved.
This sounds radical. But is it?
Property taxes already work this way for real estate. You declare your property. The county assesses its value. You pay a percentage annually. If you do not pay, the county sells your property to someone who will. The wealth stays in the tax base; only the owner changes. Across the United States, counties routinely identify assets, assess their value, and collect taxes on them. The methods vary from state to state, but the capability is universal.
What this book describes is an extension of that proven principle to all forms of wealth. The technology to do so now exists. The question is whether we have the will to use it.
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The proposed wealth tax is proportional: 4% of what you control. The amount differs because the wealth differs. Roughly 88 to 90 percent of American households would pay less than they do today.
The system stops taxing what she earns and starts taxing what people control.
Two salaries, a mortgage, retirement accounts. Typical upper-middle, still below the crossover.
Just under the crossover near $1.5\u20132M. Families at this tier still come out ahead.
Same 4% rate as Maria. The amount differs because the wealth differs. Buy-borrow-die closes.
Full nine-persona breakdown, with asset tables and side-by-side current-system comparisons, lives in Chapter 15.
Dan Shaffer is a data engineer and the founder of 4D4 Labs, a boutique data engineering studio in Cleveland, Ohio. Over fifteen years, he has designed data pipelines, automation systems, and analytics platforms across healthcare, finance, ecommerce, and government. His consulting work with government-facing clients gave him an intimate view into the mechanisms and statutes behind property tax systems, from California's supplemental assessments to Florida's tax certificate auctions.
Before any of that, he managed a Domino's Pizza in Ohio. He knows what it feels like to work for a paycheck that the tax system hits before you see it.
The Last Tax started as an engineering question: if counties can track every acre of land, and banks can value every asset they lend against, why does the federal tax system pretend it cannot see wealth? With all the advantages brought forward by blockchain and distributed ledger technology, it became clear that the answer was structural rather than technical. He could not leave it alone. This book is the result.
He lives in Cleveland with his wife and child.