Interest-Only Non-QM Loans Explained: Who They’re For and How They Work

Interest-only loans allow borrowers to pay only the interest portion of their mortgage for a set period — typically the first 10 years — before transitioning to a fully amortizing payment. On Non-QM programs, interest-only options are available to both investors and owner-occupants who meet specific requirements.

How Interest-Only Loans Work

During the interest-only period, your monthly payment covers only the interest on the outstanding balance — no principal is paid down. After the IO period ends (typically 10 years), the loan recasts and the remaining balance amortizes over the remaining term, usually 20 years on a 30-year loan. The payment increases at that point because you’re now paying both principal and interest on a shorter amortization schedule.

Example on a 30-year IO loan: 10-year interest-only period → payment includes only interest. Year 11 onward: remaining balance amortizes over 20 years → payment increases to include principal.

Who Can Get an Interest-Only Non-QM Loan?

Interest-only options are available on both income-based Non-QM programs and DSCR investor programs, subject to the following common requirements:

  • Minimum credit score of 700 (standard requirement across most programs)
  • Maximum LTV varies: 80–85% on DSCR ≥ 1.00; lower LTV at sub-1.00 DSCR
  • Available on 30-year fixed and ARM products (5/6 and 7/6 SOFR ARMs on most programs)
  • 40-year IO options also available on select investor programs (10-year IO + 30-year amortization)

Interest-Only for Investors (DSCR Programs)

IO loans are particularly powerful on DSCR investment programs because the lower monthly payment (no principal) improves the DSCR ratio. When a property barely misses the DSCR threshold on a fully amortizing payment, switching to interest-only can push it over the line. The DSCR is calculated using the ITIA payment (Interest, Taxes, Insurance, Association) rather than PITIA.

ARM Products Available

Product Fixed Period Adjustment IO Available?
5/6 SOFR ARM 5 years fixed Every 6 months after Yes (10-yr IO)
7/6 SOFR ARM 7 years fixed Every 6 months after Yes (10-yr IO)
10/6 SOFR ARM 10 years fixed Every 6 months after Yes (10-yr IO)
30-Year Fixed IO Fixed for life N/A Yes (10-yr IO)
40-Year Fixed IO Fixed for life N/A Yes (10-yr IO + 30-yr amort)

Why Borrowers Choose Interest-Only

  • Lower initial monthly payments — improves cash flow during the IO period
  • Useful for investors who expect property appreciation and plan to sell or refinance before the IO period ends
  • Allows high-income borrowers with variable income (commissions, bonuses) to manage cash flow
  • DSCR improvement on investment property — lower payment increases the coverage ratio

A worked example (illustrative example, not a quote)

The rate below is assumed only to make the arithmetic clear. On a $500,000 loan at 6%, the interest-only payment is $500,000 × 0.06 ÷ 12 = $2,500 per month. A fully amortizing 30-year payment at the same rate would be about $2,998. When the 10-year interest-only period ends, the $500,000 balance amortizes over the remaining 20 years, and the payment becomes about $3,582, roughly 43% higher than the interest-only payment.

For an investor, the same math can move a DSCR. Assume rent of $3,200 and $700 per month for taxes, insurance, and HOA. On the amortizing payment, PITIA is about $3,698 and the DSCR is about 0.87. On the interest-only payment, ITIA is $3,200 and the DSCR is exactly 1.00.

Planning for the end of the interest-only period

  1. Calendar the recast date at closing, not when it is a year away.
  2. Decide your exit: sell, refinance, or absorb the higher payment from income you expect by then.
  3. If you hold an ARM, remember the rate can change after the fixed period, which would alter both payments.
  4. Consider voluntary principal payments, but check for a prepayment penalty first.

When interest-only is and is not a good fit

It suits borrowers with variable income who want a lower required payment, and investors who need the ratio to clear a program threshold. It is a weaker fit if you are counting on appreciation to build equity, have no plan for the higher payment, or are stretching to afford the lower payment today. Interest-only alone does not reduce the balance.

Frequently asked questions

Can I pay principal during the interest-only period?

Generally yes, but any unscheduled principal payment may count under a prepayment penalty if your loan has one. Confirm the structure in your loan documents.

Does the payment shock apply to ARMs too?

On an ARM, you face two events: the recast after the interest-only period, and rate adjustments after the fixed period. Model both before choosing a product.

Is interest-only available on a primary residence?

The page above notes that it is available to investors and owner-occupants who meet the requirements. Terms vary by program and borrower profile, and we confirm the current guidelines when we review your scenario.

Related guides

Key Takeaways

  • Interest-only Non-QM loans are available — typically with a 10-year IO period
  • Minimum 700 FICO required on most programs
  • Available on fixed and ARM products; 40-year IO available on select investor programs
  • IO significantly improves DSCR on investment properties by lowering the qualifying payment
  • After the IO period, the payment increases — plan accordingly
  • At an assumed 6%, a $500,000 loan costs $2,500 a month interest-only and about $3,582 after the recast (illustrative example)
  • Interest-only can lift a DSCR from about 0.87 to 1.00 on the same property (illustrative example)
  • Put the recast date on your calendar at closing and decide your exit plan early

Serving borrowers throughout California — Orange County, Los Angeles County, Riverside County, San Bernardino County, San Diego County, and the greater Southern California region including Santa Ana, Irvine, Anaheim, Huntington Beach, Fullerton, Garden Grove, and surrounding communities.