At a glance
- Payments
- Interest only, then amortizing
- Programs
- Jumbo, Non-QM, DSCR
Educational overview, not a loan offer. Requirements vary by lender and borrower.
Overview
With an interest-only loan, payments for an initial period cover only the interest. After that period, payments rise to include principal so the loan is repaid over the remaining term.
They are most common in jumbo and Non-QM programs, including DSCR loans for investors.
How an interest-only loan works
With an interest-only loan, the required payment for an initial period covers only the interest that accrues on the balance. Nothing goes toward principal unless you choose to pay extra, so the balance at the end of the period is the same as the amount you borrowed.
When the interest-only period ends, the loan recasts: the full balance must now be repaid, with interest, over the years that remain. Because the same balance is spread over a shorter remaining term, the new payment is higher than a fully amortizing payment would have been from the start. If the rate is adjustable, it can change too, adding a second source of payment change.
Interest-only is a payment feature, not a loan type of its own. It can be paired with a fixed or adjustable rate, and it appears in jumbo, Non-QM and investor programs.
Who an interest-only loan can fit
It suits people who can afford the eventual full payment today and value flexibility. It is risky for anyone choosing it mainly because the starting payment is the only one they can manage. Situations where it comes up:
- An investor who wants lower required payments on a rental while rents rise or renovations finish.
- A borrower with large but irregular income, such as bonuses or commissions, who plans to pay down principal in lump sums.
- A buyer who expects to sell or refinance before the interest-only period ends and has a realistic backup plan if that does not happen.
See also
Where interest-only loans are available
Interest-only payments are not part of standard conventional loans sold to Fannie Mae, which buys fully amortizing fixed-rate and adjustable-rate loans. They also cannot be qualified mortgages under the federal ability-to-repay rule, because a qualified mortgage may not let you defer principal. That places consumer interest-only loans in the Non-QM category, where lenders set their own guidelines.
Availability depends on occupancy and program. Some lenders offer an interest-only option on homes you live in and second homes; others limit it to investment properties, often within DSCR programs. Lenders set the credit, equity and reserve requirements for the option, and they may differ from those for the same program's fully amortizing version.
Equity requirements on interest-only loans
Because required payments do not reduce the balance during the interest-only period, your equity depends on your down payment, any extra principal you choose to pay and changes in the home's value. If prices fall, you can owe more than the home is worth sooner than with an amortizing loan, which can make selling or refinancing difficult.
Lenders take that into account when setting how much they will lend relative to value. Your loan officer can show the figures for a specific program and property, and compare how the balance would look at the end of the interest-only period with and without extra payments.
How lenders test affordability after the interest-only period
For a consumer loan on a home you live in or a second home, the federal ability-to-repay rule requires the lender to consider the higher payment that applies after the recast. The rule calls for a payment that fully repays the loan over the term remaining after the interest-only period, using the greater of the fully indexed rate or the starting rate on an adjustable loan.
Lenders then compare that payment, together with your other debts, against your income using their own debt-to-income limits. On investment properties qualified with DSCR, practices differ: some lenders figure the ratio with the interest-only payment and others with the amortizing payment, which can change whether the property's rent is enough.
See also
Property types and occupancy for interest-only loans
Interest-only options appear on single-family homes, condos, two- to four-unit properties and other property types the underlying program accepts. The bigger divide is occupancy. Loans on homes you occupy, including second homes, are consumer credit subject to the ability-to-repay rule. Loans on rentals you do not occupy are generally business-purpose credit, where many investor programs offer interest-only as a standard choice.
Many home equity lines of credit also allow interest-only payments during the draw period, under separate federal rules that apply to lines of credit rather than closed-end mortgages.
Why borrowers consider interest-only payments
These benefits rely on discipline: the interest-only period postpones repayment of principal rather than removing it. Used well, it is a cash-flow tool rather than a way to stretch for a larger loan.
- Lower required payments during the interest-only period, which can free up cash for other priorities.
- Flexibility to pay principal when income arrives, if the note permits extra payments.
- On rentals, a lower required payment can improve monthly cash flow while the property is stabilized.
- Can be paired with jumbo, Non-QM and investor programs that fit nonstandard income.
Payment changes, equity and other interest-only risks
The main risk is payment shock: when the interest-only period ends, the required payment rises, sometimes sharply, and on an adjustable loan a rate change can add to it. Borrowers who planned to refinance may find that rates, home values or their own income have moved against them.
Over the life of the loan, keeping the balance high for longer generally means paying more total interest than on a comparable fully amortizing loan at the same rate. Pricing for the interest-only option can be higher as well.
Prepayment terms depend on occupancy. For consumer loans on homes you live in or second homes, federal rules allow a prepayment penalty only on certain qualified mortgages, which interest-only loans cannot be. Investor loans are different, and many carry prepayment penalties.
See also
Talk it through with Ruben
Interest-only compared with fixed-rate, ARM and HELOC options
The table compares how payments and equity behave, not what each option costs. Your loan officer can show side-by-side payment schedules for the same loan amount, including the payment that applies after an interest-only period ends.
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| Feature | Interest-only | Fully amortizing fixed | Adjustable-rate (ARM) | HELOC |
|---|---|---|---|---|
| Early payments | Interest only | Principal and interest | Principal and interest | Often interest only while drawing |
| Payment changes | Rises after the interest-only period | Principal and interest stay level | At each rate adjustment | With balance and rate; some plans end in a balloon |
| Equity from early payments | None | Yes, gradually | Yes, gradually | Only if you pay principal |
| Qualified mortgage possible | No | Yes | Yes | Separate rules |
| Common sources | Jumbo, Non-QM, investor | Agency, government, portfolio | Agency, jumbo, Non-QM | Banks, credit unions, others |
Interest-only scenarios: bonus income, an investor, a planned move
Illustrations only, not offers.
- A sales executive with large annual bonuses chooses an interest-only jumbo loan and applies each bonus to principal, reducing the balance before the recast.
- An investor finances a rental with an interest-only DSCR loan to improve cash flow early on, planning to refinance once rents rise.
- A couple expects to relocate before the interest-only period ends. The lender still qualifies them on the higher post-recast payment, so the plan works only if they could afford that payment anyway.
- A buyer considering interest-only mainly to afford a larger home compares it with a fully amortizing loan on a smaller one and sees how soon the larger payment would arrive.
Confirming the end-of-period payment before you apply
Ask early whether the program you are considering offers an interest-only option for your occupancy type, and request quotes both with and without it.
Underwriting follows the underlying program's documentation rules, whether full documentation, bank statements or a DSCR rent analysis.
A short checklist before you commit:
- Review the Loan Estimate: on a consumer loan, the product description names the interest-only feature and how long it lasts.
- Check the payment that applies after the recast and whether the rate can adjust.
- Ask whether extra principal payments are allowed and how they change later payments.
- On investor loans, read the prepayment and guarantee terms in the note.
Interest-only myths about cost, refinancing and ARMs
Interest-only loans are often misunderstood because the starting payment looks so attractive.
- Myth: interest-only means a cheaper loan. Reality: the payment is lower for a while, but total interest is usually higher, and the later payment is larger.
- Myth: I can always refinance before the payment rises. Reality: refinancing depends on future rates, values and your income.
- Myth: the lender only checks the starting payment. Reality: for consumer loans, the lender must consider the payment after the recast.
- Myth: interest-only and adjustable-rate are the same thing. Reality: one describes how principal is paid, the other how the rate behaves; a loan can have either or both.
Common questions
13 questions
What happens after the interest-only period?
The loan begins amortizing, so the payment rises to cover both principal and interest over the remaining term.
Can an interest-only loan be a qualified mortgage?
No. Under the federal ability-to-repay rule, a qualified mortgage cannot let you put off paying principal, so interest-only home loans are Non-QM. For a home you will live in, the lender must still check that you can afford the higher payment that starts when the interest-only period ends, not just the starting payment.
Can I get an interest-only loan on a home I live in?
Sometimes. Some Non-QM programs offer an interest-only option for primary residences and second homes, while other lenders limit interest-only to investment properties. Availability, and how long the interest-only period lasts, vary by lender.
Do I build equity with an interest-only loan?
Not from the required payments. During the interest-only period your balance stays the same unless you pay extra toward principal, so equity grows only from those extra payments or a rise in the home's value. When the period ends, the full balance is repaid over the remaining term, which is why the payment goes up.
Are interest-only loans common for investment properties?
Yes. Many DSCR and other investor programs offer an interest-only option, and some lenders offer interest-only only on investment properties. Loans made mainly for a business purpose, such as loans on rentals you do not live in, generally fall outside the federal ability-to-repay and qualified-mortgage rules for home loans, so the terms and disclosures can differ. Review the full terms, including any prepayment penalty, with your loan officer.
How can I see what my payment will be after the interest-only period?
On a consumer home loan, the Loan Estimate labels the interest-only feature in its product description, states how long it lasts and shows projected payments, including the change when principal payments begin. Your loan officer can also prepare a side-by-side schedule. On investor loans, which may not come with those disclosures, ask for a written payment schedule before you commit.
Can I be charged a penalty for paying off an interest-only loan early?
It depends on the property. For closed-end consumer loans on a home you live in or a second home, federal rules allow a prepayment penalty only on certain qualified mortgages whose rate cannot rise and that are not higher-priced, and an interest-only loan cannot be a qualified mortgage. Business-purpose investor loans are not covered by that rule, and many carry prepayment penalties. Read the note before you sign.
Is an interest-only loan the same as an adjustable-rate mortgage?
No. Interest-only describes how principal is repaid; adjustable-rate describes how the interest rate behaves. A loan can have a fixed rate with an interest-only period, an adjustable rate with full amortization, or both features at once. When both apply, the payment can change for two reasons, so ask your loan officer to show each scenario.
Does a home equity line of credit work like an interest-only loan?
In part. Many HELOCs allow interest-only payments during the draw period, when you can borrow against the line, and then require principal and interest during a repayment period; some plans instead end with a balloon payment. HELOCs follow separate federal rules for open-end credit, and the rate is often variable. A closed-end interest-only mortgage, by contrast, is a single loan advanced at closing.
Why can't I get an interest-only option on a standard conventional loan?
Fannie Mae buys only fully amortizing fixed-rate and adjustable-rate loans, so lenders that sell standard conventional loans to it do not offer interest-only payments. The federal qualified-mortgage definition also excludes loans that defer principal. Interest-only options come from jumbo, Non-QM and investor programs that lenders keep or sell to private investors.
What happens if home values fall during the interest-only period?
Your balance has not gone down, so a drop in value cuts directly into your equity and can leave you owing more than the home is worth. That can make it hard to sell without bringing cash to closing, or to refinance before the payment rises. Paying some principal voluntarily and keeping reserves can reduce that risk.
Can I refinance before the interest-only period ends?
Possibly, if you meet the new loan's requirements at that time based on your income, credit and the home's value, and if any prepayment penalty has expired or is worth paying. Plan as if refinancing may not be available, because rates, values and lending rules can change. Your loan officer can review options well before the recast date.
Will I pay more interest overall with an interest-only loan?
Generally, yes, compared with a fully amortizing loan of the same amount and rate. Because the balance stays at its original level during the interest-only period, interest accrues on the full amount for longer, and the remaining principal is then repaid over fewer years. Extra principal payments during the interest-only period reduce that difference.
This page explains how this type of loan generally works. Programs, guidelines and availability vary by lender and change often. Contact Ruben to see which options are available for your scenario today.