Piggyback Mortgage: Benefits, Drawbacks, and How It Compares to PMI

When weighing a piggyback mortgage, it helps to compare the advantages with the possible downsides.

• Can keep the first loan within the conforming limit.
• Helps you avoid PMI without making a 20% down payment.
• Keeping the first mortgage at 80% LTV may improve your chances of getting a lower rate on that loan.
• Lets you preserve more cash for other costs instead of putting the full 20% down.

Drawbacks

• You must qualify for two loans at the same time.
• The second loan often comes with a higher interest rate.
• Two loans can lead to extra closing costs, lender fees, or both.
• HELOC payments may increase, and carrying a second loan can make refinancing more complicated.

Requirements for a piggyback loan

To qualify for a piggyback loan, you need to show that you can afford both monthly payments. Lenders evaluate those payments together with your other debts when reviewing the application.

The closing process also usually involves more paperwork and coordination than a single-loan mortgage, especially when two lenders are part of the deal.

As with any mortgage, steady and verifiable income matters. You also need to meet the income standards for both loans.

Piggyback loan versus PMI: figuring out the break-even point

Comparing a monthly PMI charge with a monthly second-loan payment can be misleading because the two costs change differently over time.

PMI is temporary. With a conventional loan, you can generally request cancellation once your balance reaches 80% of the home’s original value, and servicers must end it automatically when your balance is scheduled to reach 78% if you are current. The second loan remains until it is fully repaid.

To calculate the break-even point, compare the total interest and fees on both piggyback loans with the interest, fees, and PMI on one mortgage over the same period. Your PMI disclosure form shows when your balance is scheduled to reach 80% of the original home value, which is the point at which you can request cancellation.

It also helps to compare costs over the length of time you expect to keep the loan. If you sell or refinance sooner, you have less time to recover upfront costs. If you keep the loan longer, you need to account for when PMI ends and how long the second loan will continue.

Your credit profile can also affect the decision. A stronger score may help you secure a more competitive rate on the second lien, while a weaker score can make that loan more expensive than PMI would have been. Credit also affects PMI pricing, so it is worth comparing quotes for both options.

Piggyback mortgages and conforming loan limits

Another major reason borrowers use piggyback financing is to avoid pushing a single mortgage above the conforming limit. For 2026, the baseline limit is $832,750 for a one-unit property in most of the country, though it can reach $1,249,125 in high-cost areas.

For example, if you are buying a $1,000,000 home and putting 10% down, a single mortgage would be $900,000. That amount is above the baseline limit in most of the country and would generally be treated as a jumbo loan.

Because jumbo loans usually come with higher rates and tighter qualification standards than conforming loans, an 80-10-10 structure may offer a mathematical advantage in this situation. Under that setup, your first mortgage would be $800,000, which stays below the conforming limit. Even so, whether it saves money depends on the combined cost of both loans compared with a jumbo mortgage.

Piggyback mortgage rates

A 80% loan-to-value ratio can help you qualify for a competitive rate on the first mortgage. The second loan typically has a higher rate because the lender takes on more risk.

HELOCs usually cost more than first mortgages, and variable-rate HELOCs often move with changes in the prime rate.

Where to look for piggyback lenders

Not every lender offers piggyback financing, so shopping around is important. Ask directly whether the lender provides simultaneous-close piggyback loans.

If your main lender sends you to another lender for the second loan, make sure both sides coordinate properly so the closing stays on schedule and delays are avoided.

Risks to consider

Piggyback loans can make sense for some borrowers, but there are several risks to keep in mind.

• Rate risk: If the second loan is a variable-rate HELOC, your payment can increase as the prime rate rises, subject to the loan’s cap. Your agreement should spell out the maximum rate.
• Overleveraging: With an 80-20 structure or another high-LTV arrangement, falling home values can leave you underwater on two loans with little or no equity cushion.
• Subordination agreements: Refinancing the first mortgage later usually requires permission from the second lender unless the second loan is paid off, and the lender is not required to agree.
• Short time horizon: If you expect to move within a few years, extra closing costs may take time to recover, and you may sell before the piggyback becomes cheaper than PMI.

Alternatives to a piggyback mortgage

Review all of your financing choices before deciding whether a piggyback loan is the right fit.

• Conventional loan with PMI: PMI adds a monthly cost, but it is not permanent. You can generally request cancellation at 80% of the original value, and servicers must end it automatically when your balance is scheduled to reach 78% if you are current. Lender-paid PMI replaces that monthly charge with a permanently higher interest rate.
• VA or USDA loans: These government-backed loans do not require PMI, and both allow 0% down, so they are worth comparing before structuring a piggyback loan. They do have specific eligibility rules and may include other program fees.
• FHA loans: FHA loans allow down payments as low as 3.5% and may work for borrowers with lower credit scores. However, mortgage insurance is still required, so total costs should be compared carefully.
• Down payment assistance: If your main goal is reducing out-of-pocket expenses rather than avoiding PMI, state and local housing finance programs often combine a first mortgage with a second loan or grant to help cover part of the down payment and closing costs.

The bottom line

A piggyback loan can be a strong option if you are close to 20% down, have solid credit, and can obtain a competitively priced second loan. It can also be useful if it helps keep the first mortgage within conforming limits. But whether it is better than one mortgage with PMI depends on the break-even analysis. Be sure to account for rates, added fees, and how long you expect to stay in the home versus how long PMI would last.

Most importantly, approach the decision carefully. Two loans can mean more closing costs and more coordination, both at the start and again if you refinance later. If the piggyback route still makes sense, work with lenders experienced in these products to help the process go smoothly.

Frequently asked questions

Are piggyback loans still available?

Piggyback loans are still offered, but choices may be limited and not every lender provides them. The most common version is the 80-10-10 structure, which uses a second loan equal to 10% of the purchase price. Other setups may be harder to find.

Is it difficult to get a piggyback loan?

Getting a piggyback loan involves a similar underwriting process to a standard mortgage. However, because it is a second loan and therefore riskier for the lender, additional documentation and qualifications may be required.

Is a piggyback loan better than paying PMI?

A piggyback loan can be better than PMI for some borrowers, but it depends on the individual situation. It may work well for buyers who are close to 20% down and have strong credit, but the savings depend on rates, fees, and how long the loans are kept. Running the numbers helps determine the break-even point.

Is a piggyback loan the same as down payment assistance?

A piggyback loan is not the same as down payment assistance, although down payment assistance sometimes comes in the form of a second loan. Down payment assistance is meant to make buying a home more affordable, while a piggyback loan is designed to help a borrower avoid PMI or stay within conforming loan limits.