subsidization

Difference between the Actuarial Equivalent (rate) and the often lower rate actually charged to insure a risk.

noun

Money or property used to produce more wealth: backing, capital, capitalization, financing, funding, grubstake, stake. See help/harm/harmless, money.

The noun has 2 meanings:

Meaning #1: mony (or other benefits) obtained as a subsidy
  Synonym: subsidisation

Meaning #2: the act of providing a subsidy
  Synonyms: grant, subsidisation