How a 30-Year Mortgage Actually Works
A mortgage is a loan secured by your home. On a $300,000 loan at 7% interest, your fixed monthly payment is about $1,996. In month one, roughly $1,750 of that goes to interest and only $246 reduces your actual balance — called principal. This ratio shifts slowly over time through a process called amortization. By year 15, your payment is split roughly 50/50. By year 28, most of your payment is principal. Over the full 30 years, you'll pay approximately $419,000 in interest on top of the original $300,000.
In the early years of a mortgage, most of your payment is interest — not equity. Extra principal payments early on save dramatically more money than the same payment made later.