prorate

/ˈproʊreɪt/
verb
  1. To divide, distribute, or calculate something proportionally according to a specific factor (such as time, amount, or share).
    • If you cancel your subscription halfway through the month, we will prorate the refund.
    • The company will prorate the bonus based on how many months each employee worked.
    • The landlord agreed to prorate the rent for the days we moved in after the first of the month.
Antonyms