The Tithe is the Imperium’s regular demand for soldiers, goods, and people from every world it controls. It’s the bureaucratic engine that keeps the war machine running, and it’s also one of the setting’s best sources of grim drama.
What the tithe actually is
Every Imperial world owes the Administratum a share of what it produces. That can mean food, minerals, weapons, manufactured goods, or people. The two main categories are the military tithe, which takes roughly one in ten of a planet’s PDF as recruits for the Imperial Guard, and the Exacta, which covers everything else.
Collection is handled by the Departmento Munitorum for soldiers and the Departmento Exacta for resources. Administratum officials arrive periodically to pick up the goods, though Warp travel and the sheer size of the Imperium make the whole system slow and confusing.
Who’s exempt, and who isn’t
Space Marine homeworlds are largely exempt. Chapters govern their own planets under ancient oaths and don’t pay tithes the way normal worlds do. They still fight for the Imperium, but they do it on their own terms.
Everyone else is expected to pay up. Planetary Governors are responsible for meeting the quota, and failure brings brutal reprisals from the Adeptus Terra. Arbites executions are common for the slightest breach of protocol. As long as the tithe is paid, a governor can rule however they like.
What happens when a world can’t pay
Desperation leads to dark choices. A government short on soldiers might conscript anyone healthy, including children as young as ten. A governor struggling to meet a psyker quota might hire xenos mercenaries to raid Black Ships and steal other worlds’ tithes.
Even worlds cut off by Warp storms keep paying, or at least stockpile what they owe. In Imperium Nihilus, governors fear that hoarding resources will look like rebellion if the Imperium ever returns. The reprisal would be death for the governor’s family, or worse, a Space Marine purge of the entire world.
The tithe in other lore
The Tithes is also a 2024 animated anthology on Warhammer+. Its three episodes show different sides of the system: Space Marines making their own sacrifices, Custodes and Sisters of Silence overseeing a psyker tithe, and a Departmento Munitorum armaments collection on a world under Ork attack.
There’s also a short story called The Tithe by Ben Counter, which is separate from the animated series.
Key facts
- The Imperial Tithe is the Imperium’s regular demand for soldiers, resources, and people from its worlds.
- Military tithes take roughly one in ten PDF members as Imperial Guard recruits.
- The Exacta covers all other resources, from food to minerals to weapons.
- Space Marine homeworlds are exempt from most tithes under ancient oaths.
- Failure to pay can lead to execution of the governor or a full Imperial reprisal.
- The Tithes is a 2024 animated anthology on Warhammer+ exploring the system.
FAQ
Do Space Marines pay the tithe?
Mostly no. Their homeworlds are exempt under ancestral oaths, so they govern themselves and don’t hand over resources or recruits like other planets. They still fight for the Imperium, but on their own terms.
What happens if a world doesn’t pay?
The Imperium responds with extreme violence. Governors can be executed on the spot by the Adeptus Arbites, and entire worlds may face purges or Space Marine reprisals.
What’s the difference between the military tithe and the Exacta?
The military tithe takes about a tenth of a planet’s PDF as Imperial Guard recruits. The Exacta covers all other resources, like food, minerals, and manufactured goods.