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How Can an 80-10-10 Mortgage Help You Avoid PMI?

May 22, 2025

4 minutes

How Can an 80-10-10 Mortgage Help You Avoid PMI?

If you’ve been eyeing your dream home but don’t have 20% saved for a down payment, lenders will usually slap you with Private Mortgage Insurance (PMI). It protects them, not you. That monthly charge? Pure cost with no equity return.

Here’s the good news: There’s a workaround. It's called an 80-10-10 mortgage, and it’s how savvy buyers avoid PMI, even with just 10% down.

Key Takeaways:

  • 80-10-10 mortgages split your home loan into 80% primary mortgage, 10% second mortgage, and 10% down payment.
  • Helps you avoid PMI while still putting less than 20% down.
  • Ideal for high-income buyers who want to keep more cash liquid.
  • May result in higher second loan rates, but overall savings often outweigh costs.
  • Best suited for those with strong credit scores (typically 700+).

Let’s explain how it works—and why it might be the smartest strategy in today’s competitive housing market.

What Is an 80-10-10 Mortgage?

An 80-10-10 mortgage is a home financing structure that lets you avoid PMI by splitting your loan into three parts:

  • 80%: First mortgage
  • 10%: Second mortgage (often a HELOC or fixed-rate loan)
  • 10%: Down payment from you

Why This Structure Matters:

An 80-10-10 loan isn’t just clever math—it’s a smart strategy to boost affordability and avoid extra costs. Here’s what it helps you do:

  • Avoid PMI: You keep your first mortgage under the 80% loan-to-value (LTV) threshold.
  • Lower upfront cash: Only 10% down needed.
  • Flexibility: Second mortgages often offer interest-only or flexible repayment options.
  • Tax perks: You may be able to deduct interest (check with a tax professional).

Pro Tip: Always compare the combined payments of both loans to a single loan with PMI. In many cases, you come out ahead.

Who Should Consider an 80-10-10 Loan?

80-10-10 loans are a great fit if:

  • You have a strong credit score (700+)
  • You’re buying in a high-cost housing market
  • You want to keep more cash available for renovations, investments, or reserves
  • You’re a high-income earner without a full 20% saved

It gives you the power to act fast without over-leveraging.

80-10-10 vs. Traditional Loan With PMI


Feature80-10-10 MortgageTraditional 90% Loan + PMI
Down Payment10%10%
PMI Required❌ No✅ Yes
Second Loan Payment✅ Yes❌ No
Equity Built Faster?✅ Often❌ Slower
Monthly Payment (Typical)Slightly HigherLower upfront, PMI adds cost
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Article by

NK
Nathan Knottingham

Proudly serving as Chief of Staff at Be My Neighbor Mortgage, focusing on holistic homeownership journeys.

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