In KC detailed budget, enter the salary effective date as the date of the last effective increase, and not as the date of the next scheduled increase.
As an example, if listing a graduate student in your detailed budget with effective dates 7/1/25-6/30/26, and you know the student's salary from June 2024, enter that amount with salary effective date of 6/1/24. KC will then appropriately calculate the costs for the period 7/1/25-6/30/26 taking into account the increase that will take effect 6/1/25 for the grad student.
For information on when different salaries inflate, please see KC Default Salary Inflation by Month and Category.