I am using Great Lakes to pay for two FFEL Consolidation student loans that are on the same account. The interest rate for both loans is 7.25%. For the past four months I have been making the minimum (interest-only) payment of $254.25. I am on the graduated repayment plan, and here is a breakdown of the payment history:
6/1/2017:
Loan 1 Interest Paid: $72.26
Loan 2 Interest Paid: $181.99
7/1/2017:
Loan 1 Interest Paid: $72.21
Loan 2 Interest Paid: $182.04
8/1/2017:
Loan 1 Interest Paid: $72.16
Loan 2 Interest Paid: $182.09
9/1/2017:
Loan 1 Interest Paid: $72.11
Loan 2 Interest Paid: $182.14
10/1/2017:
Loan 1 Interest Paid: $72.08
Loan 2 Interest Paid: $182.17
My question is: From month to month, the sum total payment for each month is always $254.25, but why is the payment of Loan 1 going down and the payment of Loan 2 going up?
UPDATE: In response to the comment: The principal amount for Loan 1 is $11,618.21. The principal amount for Loan 2 is $29,429.66. So $41,047.87 total. And since I am only paying the monthly interest, the principal doesn't change (yet).