Every lever in the hundred-year design, live. Move them and watch the shares respond — and find out which side of the line your own household would be on.
Move a lever, the century recomputes
Computing…
| Year | Phase | Top 1% | Bottom 50% | Charge | Return |
|---|
The same design, from one household's side of it
Global totals are how a policy gets argued about without anyone knowing whether it would touch them. Enter a net worth and an income and the design reports which side of the line that household is on, and how its position moves over a century.
Enter a household above…
| Rung | Net worth | Income | Lifetime position | Basis |
|---|
| Year | Net worth | Percentile | Stock charge | Transaction levy | Transfer in | Net that year |
|---|
The exemption lever
The flaw this lever exists to fix
Watch the first two decades for a low-wealth household. Its net worth falls, and its percentile with it. The transaction levy starts in the flow phase, but the transfers it funds are trivial until the stock charge switches on twenty years later — so the staging asks the people the design exists to help to pay into it first and be paid from it much later.
That is not a rounding error in the model, it is a real defect in the sequencing. The lever above is the repair, and it is cheap: exempting below five times median wealth through the lead-in removes about a tenth of flow revenue for twenty years, against a defect that otherwise costs the median household more than half its net worth. It is left visible rather than silently patched, because a design that hides its own transition costs is how a policy arrives with a decade of unexplained pain in it.
What this calculator assumes
Two errors were found and fixed while building it, both the same shape: a quantity that grows in the world being held still in the model. Percentile thresholds were frozen at 2026 values, which made every household on earth cross into the levied bracket and come out a net payer. The transfer pool was frozen at today's global wealth while household levies compounded with income, which lifted a median household for forty years and then slowly crushed it. Both are fixed; both are recorded because the class of error recurs.