As a general rule, making extra payments just toward the principal balance can help you pay off a loan faster and reduce the overall cost of the loan As the loan matures, this ratio shifts, applying more to the principal. Can you make principal only payments on your mortgage
Principal vs. Interest on Credit Cards and Loans - Self. Credit Builder.
Find out how much you could save, and whether principal only payments are an option for you.
Early in an amortizing loan, a larger proportion often goes towards interest, with a smaller amount reducing the principal