It can, however, be sure that the costs related to the new contracts will continue to rise. By the fifth year of the CTU contract, CPS will need $504 million more a year to cover the added costs. For SEIU, that cost will be at least $54 million. That comes to $558 million in additional costs by the 2024 budget year — about 8% more than the $7 billion that the district spent last year.