At a recent Central Oregon Investor Network meetup, our guest speaker Michael Lash spent ninety minutes walking our Bend investor community through an idea that runs against almost everything most of us were taught about home loans: that for the right borrower, a simple-interest line of credit can retire a mortgage in five to seven years - without earning a single dollar more.
Michael spent years as a mortgage broker before he learned, through some of his own connections, how a lot of wealthy families actually finance their homes. As he put it, it is "honestly against the grain of everything I had been taught and everything I had been espousing to my clients." What follows is the short version of what he shared. It is educational, not financial advice - but it is the kind of thinking that changes how you look at the biggest debt most people ever carry.
The "death pledge" most of us never question
The word mortgage comes from old roots that translate, almost literally, to "death pledge" - mort for death, gage for pledge. And as Michael pointed out, these loans did not always look the way they do today. Centuries ago they looked far more like an open-ended, simple-interest line of credit, where the borrower kept real control over the three levers that matter.
The modern amortized mortgage quietly takes two of those levers away. On a standard 30-year loan, the early years are almost all interest and very little principal. You can make years of payments and barely move the balance - which is exactly why a long mortgage can cost far more than the price of the home itself before you ever own it outright.
What Henry Ford understood
Michael opened with a line he loves - one that titans of industry and modern investors alike keep coming back to:
It is well enough that the people of the nation do not understand our banking and monetary system. For if they did, I believe there would be a revolution before tomorrow morning.
- Henry Ford
His point was not conspiracy - it was literacy. Most of us were handed one tool, a thirty-year amortized loan, and never shown how the math underneath it actually works or who it was designed to benefit. Understanding the mechanics is the whole game. Once you see how interest is calculated and collected, you can start to make different choices with the same income you already have.
The three levers you actually control
Every loan comes down to three things: the rate, the balance, and the time. A conventional mortgage locks two of them away from you - the schedule decides how your balance comes down and over what timeline, and the front-loaded interest does the rest. A simple-interest line of credit hands those levers back.
Here is the counterintuitive part Michael drove home: when it comes to a mortgage, time matters more than the interest rate. Two loans at the same rate can cost wildly different amounts depending on how quickly the balance is paid down. Interest on a simple-interest line of credit is charged on your average daily balance rather than front-loaded across decades. By positioning the income and cash flow you already have against that balance - parking it where it offsets what you owe day to day - more of every dollar goes to principal, and the payoff timeline collapses from thirty years toward five to seven.
Who this actually works for
This is not a trick, and it is not for everyone. It rewards discipline and positive monthly cash flow, and the meetup spent real time on when not to use it - the traps that keep people stuck in long-term debt, and the situations where a conventional mortgage is still the smarter call. For Central Oregon investors who already run their numbers carefully, it is one more tool for turning equity into freedom faster.
If you want to go deeper on creative finance like this, two good next steps: explore the PRIMO Private Money Academy, and join our next live investor meetup - we break down a new strategy every month with people investing all over Central Oregon and beyond.
This article summarizes an educational presentation and is not financial, tax, or investment advice. Mortgage-acceleration strategies carry risk and are not suitable for everyone. Consult a licensed professional about your specific situation before acting.