The Incredible Math of Extra Mortgage Principal Payments
For most households, a mortgage is the largest financial liability they will ever assume. A typical 30-year fixed-rate mortgage is structured using an amortization table. During the initial decade of the loan, a staggering portion of each monthly payment is swallowed entirely by interest charges, leaving the loan balance nearly untouched.
However, there is an incredibly powerful loophole available to homeowners: Extra Principal Withholdings.
Why Small Payments Make a Massive Impact
Because interest is calculated monthly based on the current remaining balance of your loan, any payment that reduces your principal has a cascading compound effect. For example, adding just $150 to your principal payment every month on a $350,000 mortgage at 6.5% interest can shave over 4 years off your 30-year term and save you tens of thousands of dollars in interest fees that you would have otherwise paid to the bank.
How to Implement an Extra Payment Strategy
There are multiple ways to execute this strategy. Some prefer a steady monthly addition, some pay an extra lump sum once a year (e.g. using a tax refund), while others utilize a bi-weekly payment schedule (making half payments every two weeks, resulting in 13 full payments per year instead of 12). Check with your mortgage servicer to ensure your extra payments are explicitly earmarked as "Principal Only."