09/17/2026
A 30-year mortgage doesn't have to take 30 years.
On a $400,000 loan at 6.25%, here's what adding a little extra to principal actually does. These are the exact numbers.
1 extra payment a year: pays it off about 5.6 years early and saves roughly $107,000 in interest.
2 extra payments a year: about 9.25 years early and roughly $172,000 saved.
3 extra payments a year: nearly 11.8 years early and about $217,000 saved.
These figures are an example on a $400,000 loan at 6.25%. Your real results depend on your rate, your loan terms, and making sure every extra dollar is actually applied to principal.
This is the part most of these posts leave out, because it's the part that matters most. A lot of servicers will hold an extra payment, or push it toward next month, unless you specifically tell them to apply it to principal. So if you do this, say those exact words, apply to principal, every single time. Otherwise you're not buying years back, you're just paying ahead.
It doesn't have to be a whole payment at once, either. Splitting it across the year works too. The point is that small, consistent extra principal quietly erases years off your loan and tens of thousands in interest.
Want to see what this looks like on your actual loan? Send me a message and I'll run your real numbers.