Piggyback Loan 80-10-10: How I Avoided PMI and Saved Thousands

Here’s a stat that honestly blew my mind when I first heard it — private mortgage insurance can cost you anywhere from $30 to $70 per month for every $100,000 borrowed. That adds up fast! When my wife and I were buying our second home back in 2019, we didn’t have a full 20% down payment saved up, and the thought of throwing money at PMI every single month made my stomach turn. That’s when a loan officer friend mentioned something called a piggyback loan 80-10-10, and honestly, it changed the whole game for us.

So What Exactly Is a Piggyback Loan 80-10-10?

A piggyback loan 80-10-10 is basically a way to split your home purchase financing into two separate loans so you can avoid paying private mortgage insurance. The numbers break down pretty simply. You take out a first mortgage for 80% of the home’s value, a second mortgage (often a home equity loan or HELOC) for 10%, and then you put down the remaining 10% as your down payment.

The magic here is that because your primary mortgage only covers 80% of the purchase price, lenders don’t require PMI. And trust me, that’s a big deal. PMI is one of those costs that feels like you’re just lighting money on fire because it protects the lender, not you.

Why We Went With the 80-10-10 Structure

I’ll be honest — we had about 12% saved for a down payment, which was kind of an awkward number. Not enough to hit the 20% threshold, but too much to just go FHA and deal with those mortgage insurance premiums hanging around forever. A coworker had gone the conventional route with PMI and was paying an extra $187 a month. No thank you.

The piggyback mortgage let us use that 10% we had, borrow another 10% through a second lien, and keep the first mortgage at 80%. Our monthly payment was actually lower than it would’ve been with a single loan plus PMI. I remember sitting at the closing table feeling like we’d cracked some kind of secret code.

The Pros That Made It Worth It

• No PMI payments — This was the biggest win. We saved roughly $160 per month compared to a conventional loan with mortgage insurance.
• Lower combined monthly payment — Even with two loans, the total was less than one loan with PMI tacked on.
• Tax deductions — The interest on both loans was potentially deductible, though you should definitely talk to a tax professional about your specific situation.
• Faster equity building — Without PMI eating into our budget, we could throw extra money at the principal.

The Downsides Nobody Warned Me About

Okay so it wasn’t all sunshine and rainbows. The second mortgage came with a higher interest rate — ours was about 2.5% higher than the first mortgage. That stung a little. Also, the closing process was more complicated because you’re essentially closing on two loans simultaneously.

Another thing that caught me off guard was that not every lender offers piggyback loans. We had to shop around quite a bit before finding one who would do it. Some lenders have been scared off from these since the 2008 housing crisis when combo loans got a bad reputation. Fair enough, but the product itself isn’t evil — it was the reckless underwriting that caused problems back then.

Is an 80-10-10 Loan Right for You?

This structure works best if you’ve got a solid credit score — usually 700 or above — and a decent income but just haven’t saved that full 20% down. It’s also great if you’re buying in a high cost of living area where even 10% down is a significant chunk of cash. However, if you’re only putting down 3-5%, this probably isn’t the right fit and you might want to explore FHA loans or conventional options with PMI instead.

One tip from personal experience: run the numbers both ways. Like actually sit down with a mortgage calculator and compare total monthly costs for a single loan with PMI versus the 80-10-10 combo. Sometimes PMI is actually cheaper depending on your situation.

The Bottom Line on Piggyback Financing

Looking back, choosing the piggyback loan 80-10-10 was one of the smartest financial moves we made during our home buying journey. It’s not for everyone, and you gotta make sure the math actually works in your favor. But when it does? It feels pretty dang good to keep that extra cash in your pocket every month instead of handing it over to an insurance company.

Do your homework, talk to multiple lenders, and don’t be afraid to ask tough questions. And if you want more tips on navigating the mortgage world without losing your mind, head over to the Mortgage Margin blog — we’ve got plenty of posts to help you make smarter borrowing decisions!