Stellaris Wiki

Subject typesEdit

There are a number of types of subjects available depending on the overlord's government. Most of them have to pay a certain tribute to the overlord.

PHI disables the option to integrate a vassal.

Type Tribute Can expand Diplomacy Protected Joins overlord's wars Get sensors Other effects Overlord requirements
  Tributary
  •   10% Energy Output
  •   10% Minerals Output
         
  • Not   Corporate authority
  Vassal
  •   10% Alloys Output
  •   10% Consumer Goods Output
  •   10% Research Output
         
  • Subject gains:
    •   Research agreement
    •  Research sharing bonuses
  • Overlord gets:
    •   −1 Monthly Influence
  • Not   Corporate authority
  • Less than 50% technological superiority
  • Neither empire has   Inward Perfection civic
  Protectorate          
  • Subject gains:
    •   −80% Cost on overlord's tech
  • Overlord gains:
    •   +1 Monthly Influence
    •   +200 Monthly Society Research
  • At less than 50% Technological Level difference the Protectorate becomes a Vassal
  • Not   Corporate authority
  • More than 50% technological superiority
  • Neither empire has   Inward Perfection civic
  Subsidiary
  •   5% Energy Output
  •   5% Minerals Output
  •   5% Alloys Output
  •   5% Consumer Goods Output
  •   5% Research Output
         
  • Subject gains:
    •   Research agreement
    •  Research sharing bonuses
  • Overlord gets:
    •   −1 Monthly Influence
  •   Corporate authority