What Is A Mortgage, Actually?

Let’s start at the VERY beginning, because one of my biggest complaints about the mortgage industry is that we throw around words like everybody attended some secret class where all of this was explained.

They did not.

So, what exactly is a mortgage?

At its simplest, a mortgage is just financing used to buy a home.

And financing is probably something you already understand, even if you’ve never thought about it in those terms. If you want to buy something now, but you either don’t have—or simply don’t want to spend—all of the cash it would take to buy it outright, you can borrow the money instead.

A car loan is an easy example. You want a $40,000 car. You do not particularly feel like handing somebody $40,000 today. Fair. So a lender gives you the money to buy the car, and you agree to pay that money back over time.

A mortgage is the same basic concept. You are just financing a house instead of a car.

Obviously, there are a whole lot more rules, moving pieces, and paperwork wrapped around a mortgage because houses are substantially more expensive, the finance industry tends to make simple things look deeply complicated, AND the government is involved. But underneath all of that, the basic agreement is pretty straightforward: the lender gives you a big chunk of money now, and you agree to pay it back over time.

But who actually owns the house?

You own the house.

This one trips people up all the time because they hear things like “the bank has a lien on the property” and assume that means the bank owns the house until the mortgage is paid off.

Nope. You own the house.

The lender has a legal interest in the property because the house is what we call collateral for the loan.

Collateral is basically the asset backing up the money you borrowed. With a car loan, the car is collateral. With a mortgage, the house is collateral.

That matters because the lender is taking a risk by handing over quite the chunk of change upfront. If you stop making payments on a car loan, the lender can eventually repossess the car. If you stop making payments on a mortgage, the lender can eventually go through the foreclosure process and take possession of the house. In both cases, the lender is simply attempting to recoup the borrowed funds.

The mortgage version is obviously much more involved than somebody showing up with a tow truck, but the idea is the same: if you don’t repay the money according to the agreement, the lender has a way to recover at least some of what it loaned you by taking back and selling the collateral.

So...what’s in it for the lender?

So then the next question is: why would a lender give somebody hundreds of thousands of dollars in the first place?

Because that's how they make their money.

Lenders are not generally in the business of handing out enormous sums of money because they believe in your dreams and think your future breakfast nook sounds adorable. They lend money because there is typically an interest rate attached to the loan.

That interest is the lender’s compensation for letting you spend their money today and pay them back slowly (for the next 10–30 years).

If you borrow $300,000, that $300,000 is your principal.

The interest is the price you pay over time for borrowing that principal.

And this is where people tend to start focusing very heavily on “the rate,” which makes sense. The interest rate affects how much interest you pay and what your monthly principal-and-interest (P&I) payment looks like.

The rate is only one piece of the mortgage

But the interest rate is not the entire mortgage.

How much you borrow matters. How long you borrow it for matters. Your down payment matters. The type of loan matters. The way the rate is structured matters. The costs associated with getting that rate matter. Ironically, many of those details influence what your rate options even are.

And suddenly we have several different conversations living under one little word: mortgage.

We’ll get into all of those separately, because trying to teach the entire mortgage industry in one blog post would be mind-numbing, if not impossible.

For now, this is the part I want you to understand:

A mortgage is money you borrow to finance a home. You own the home. The lender has a lien against it because the home serves as collateral for the money you borrowed. You repay that money over time, along with the charge for borrowing it.

That’s the foundation.

Everything else we talk about—rates, points, down payments, loan programs, APR, closing costs, amortization, all the other mortgage-y words—just builds on top of that.