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A new census and iugatio/capitatio tax machine extracts more regularly from land and heads

Diocletian’s government rebuilt taxation on a census of land (iugatio) and heads (capitatio), a more regular extractive machine across dioceses. In the causal graph this event strengthens the driver Income Inequality.

A new census and iugatio/capitatio tax machine extracts more regularly from land and heads

Sources: [1][2]

Read the full account

Diocletian’s government rebuilt taxation on a census of land (iugatio) and heads (capitatio), a more regular extractive machine across dioceses.

Context

Regular tax can be state capacity (improving twin) and can crush small holders. This stores the extractive inequality path. Lactantius’s horror at the census is partisan but names a real machine.

Diocletian’s documented role is bounded by other offices and collaborators named in the sources below.

Why it matters

A tighter head-and-land tax is an inequality path of high confidence on the machine, medium on any one village.

A census is not scripture-burning. Split 303.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Diocletian

    Person

    Direct responsibility

    responsibility level 0.75 · verified

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

    1. FactA new census and iugatio/capitatio tax machine extracts more regularly from land and heads
    2. strengthensDriverIncome Inequality

    impact weight 0.5 · Effect from 1 January 297 · verified

    A tighter head-and-land tax is an inequality path of high confidence on the machine, medium on any one village.

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Britannica — DiocletianEncyclopaedia Britannica · High credibility · verified
  2. 2.Cambridge Ancient History — later Roman / Hun chaptersCambridge University Press · High credibility · verified
What the sources establish

Cambridge Ancient History and Britannica independently describe the new tax assessment; Lactantius supplies hostile colour, not a ledger.

Established: received iugatio/capitatio census-tax. Not established: a unique poverty series for 297.

Contribution type is direct.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorDiocletian
  2. contributed toFactA new census and iugatio/capitatio tax machine extracts more regularly from land and heads
  3. strengthensDriverIncome Inequality

Cite this page

Factrail. (2026). A new census and iugatio/capitatio tax machine extracts more regularly from land and heads. Factrail. https://factrail.ai/facts/di-tax-census-extraction

https://factrail.ai/facts/di-tax-census-extraction

Accessed 16 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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