Down Payment, LTV & the Fees

You’ve taken apart the loan: its anatomy (principal, rate, term), how amortization chews through it, and what the rate and APR really cost you. But before any of that machinery starts, there’s a quieter, scarier question the lender asks first: how much of your own money are you putting on the table? That number — the down payment — and the ratio it produces — loan-to-value — decide whether you even get the loan, what rate you get, and whether you’re forced to buy an insurance policy that protects somebody else. Plus there’s a pile of fees waiting at the finish line that nobody puts on the brochure. Let’s count the cash.

The down payment: your skin in the game

The down payment is the slug of cash you pay upfront, out of your own pocket. The lender covers the rest. The arithmetic is brutally simple:

$\text{Loan} = \text{Price} - \text{Down payment}$

Buy a $300,000 house, put $60,000 down, and the lender hands over the remaining $240,000. That $240,000 is your loan; the $60,000 is gone from your savings and parked in the house as ownership.

Why do lenders care so much about a number that doesn’t even come from them? Because a down payment is skin in the game. A borrower who put $60,000 of their own money into a house thinks very hard before walking away from it; a borrower who put in $0 has nothing to lose by mailing back the keys. Your down payment is a cushion and a commitment device — it absorbs the first chunk of any price drop, and it makes you behave. No lender wants to be the only one with money at risk.

The takeaway from that pretest is the whole lesson in miniature: the size of your down payment, relative to the price, is what the lender actually prices. And there’s a single ratio that captures it.

Loan-to-Value (LTV): the ratio that rules everything

Loan-to-value (LTV) is exactly what it sounds like — the size of the loan compared to the value of the thing it’s buying:

$\text{LTV} = \frac{\text{Loan}}{\text{Property value}}$

It’s the mirror image of your down payment. A 20% down payment leaves an 80% loan, so an 80% LTV. Put more down, your LTV drops; put less down, your LTV climbs. The two always sum to 100%.

Worked example — the $300,000 house

Let’s grind the canonical numbers. Price $300,000, down payment $60,000 (which is 20% of $300,000):

$\text{Loan} = 300{,}000 - 60{,}000 = 240{,}000$

$\text{LTV} = \frac{240{,}000}{300{,}000} = 0.80 = 80\%$

So a 20% down payment produces an 80% LTV. Lower LTV means more equity (more of the house is truly yours) and therefore less lender risk — and lenders reward lower risk with better rates. A borrower at 60% LTV is a fortress; a borrower at 97% LTV is a house of cards, and the rate sheet shows it.

Notice the pattern: the down-payment column and the LTV column are perfect complements — they add to 100%. That’s not a coincidence, it’s the definition.

The 80% line and PMI

Drag the down-payment slider below and watch the LTV marker. There’s a dashed line at 80%. Push your down payment down toward 3–5% and the marker shoots up past the line into amber territory; crank it up to 20% and the marker drops to exactly the line; go higher and it slides comfortably under. That 80% line is the single most important threshold in the whole mortgage.

Above 80% LTV — meaning you put less than 20% down — lenders typically force you to buy private mortgage insurance (PMI). And here’s the twist that catches everyone:

How big is PMI? Roughly 0.3% to 1.5% of the loan amount per year, depending on how high your LTV is and your credit. On a $270,000 loan (10% down), even a middling 0.6% rate is about $1,620 a year — roughly $135 tacked onto every monthly payment, buying you nothing you can touch.

The good news: PMI falls off. It’s not forever. As you cross back under 80% LTV, the requirement goes away. You get there three ways, often at once:

• Amortization — every payment shaves down the loan balance (the numerator of LTV), so LTV drifts lower on its own.
• Appreciation — if the house’s value rises (the denominator), your LTV drops even faster.
• Extra payments — throw extra principal at the loan to punch through 80% sooner.

Once you reach roughly 80% LTV you can usually request cancellation, and by law (in the US) PMI auto-terminates around 78% LTV based on the original schedule. Either way, PMI is a tollbooth, not a life sentence.

Equity: the part of the house that’s actually yours

Equity is the slice of the property you genuinely own — the value minus what you still owe:

$\text{Equity} = \text{Property value} - \text{Loan balance}$

Your down payment is your starting equity. On day one, $60,000 down on a $300,000 house means $60,000 of equity. From there, equity grows three ways — the same three forces that kill PMI:

• Down payment seeds it (the lump you put in upfront).
• Amortization grows it with every payment, as the principal portion chips away at the loan balance.
• Appreciation grows it for free if the house’s market value rises.

These compound. Five years in, you might have your original $60,000 plus $25,000 of principal paid down plus $40,000 of price appreciation — $125,000 of equity on a house you’ve barely “paid off.” Equity and LTV are two readouts of the same gauge: as equity climbs, LTV falls. Cross enough equity and PMI vanishes; that’s why the slider and the equity number move together.

Closing costs: the fees nobody brochures

You’ve budgeted the down payment. You are not done. To actually close the loan, you pay a stack of one-time closing costs on top of the down payment — typically 2% to 5% of the loan amount. On a $240,000 loan, that’s roughly $4,800 to $12,000 of cash, due at signing, that has nothing to do with your down payment. The usual suspects:

Discount points and the break-even

One line item deserves its own spotlight because it’s a choice: discount points. A point costs 1% of the loan and, in exchange, the lender shaves your interest rate (a typical point buys down the rate by around 0.25%). It’s prepaid interest — you pay upfront to pay less later.

Is it worth it? Only if you do the break-even math. Say one point on a $240,000 loan costs $2,400 and lowers your monthly payment by $50. You break even after $2{,}400 \div 50 = 48$ months — four years. Stay in the house past four years and the points pay off; sell or refinance before then and you lit $2,400 on fire. Buying points without running this calculation is one of the most common ways borrowers overpay.

The traps that drain your wallet

Four mistakes turn a manageable loan into a money leak. Spot them now:

• Forgetting closing costs in the budget. People save diligently for the 20% down payment, then get blindsided by $8,000 of fees at signing. Budget the down payment plus 2–5% of the loan for closing — or you won’t make it to the table.
• Assuming a tiny down payment is “free.” Putting 3% down feels like a bargain, but it means a bigger loan, a higher rate, and years of PMI. The low down payment just moves the cost into your monthly bill and stretches it out.
• Paying points without the break-even math. Buying down the rate only wins if you keep the loan past the break-even horizon. Pay the points, then sell in two years, and you simply overpaid.
• Confusing PMI with insurance that protects you. PMI protects the lender. It is not homeowner’s insurance, not life insurance, not anything that pays you. It’s the surcharge for borrowing with a thin down payment — treat it as a cost to escape, not a benefit you bought.

Putting it together

The upfront money and the fees, chunked into one map:

A mixed recap pulling from everything above:

Key Takeaways