A specialized Non-QM product where the borrower pays only the interest portion for an initial period (typically 10 years), after which payments increase to principal + interest amortization. Built for high-income professionals, investors, and borrowers who want lower initial cash flow with full long-term equity build.
An Interest Only (IO) loan is a Non-QM product where the borrower pays only the interest portion of the monthly payment for an initial period — typically 10 years — after which the loan converts to fully amortizing principal + interest for the remaining term (usually 20 or 30 more years).
During the IO period, monthly payments are ~25–35% lower than a fully amortizing loan at the same rate. The borrower builds no principal equity during the IO period (relying on property appreciation for equity growth) but enjoys substantially better monthly cash flow.
IO loans suit specific strategic profiles: high-income professionals with strong cash flow but liquidity preferences (doctors, attorneys, executives), investors maximizing per-property cash flow, borrowers expecting income increases (residents transitioning to attendings, executives pre-vesting), and strategic borrowers who prefer to invest the principal-payment difference elsewhere. The product is structurally a calculated bet on either property appreciation or sustained income to handle the eventual P&I payment jump.
At year 10 (or 5/7 depending on IO term), the loan converts to fully amortizing P+I. Monthly payment can jump 40–60% overnight because principal is now being repaid over the REMAINING term (20 years if 30-yr loan) — much faster than a fresh 30-year amortization. Borrowers who don't plan for this often face crisis at the transition. Always plan refinance or sale before the IO period ends.
| Tier | Credit | Max LTV — Purchase | Max LTV — Cash-Out | IO Period | Typical Rate |
|---|---|---|---|---|---|
| Premium | 760+ | 80% | 75% | 10 yr | 8.000% |
| Standard | 740–759 | 80% | 75% | 10 yr | 8.250% |
| Standard | 720–739 | 75% | 70% | 10 yr | 8.500% |
| Tier-3 | 700–719 | 75% | 65% | 5/7 yr only | 8.875% |
| Item | Detail | Why It Matters |
|---|---|---|
| Your Actual Payment During IO | Interest only (~30% lower) | Cash flow benefit |
| Lender DTI Calculation | Uses fully amortizing P+I | Qualifying standard |
| Implication | You must qualify as if making the full P+I payment | Limits how much IO actually "helps" qualifying |
| Strategic Use | IO is a cash-flow tool, not a qualifying tool | Don't use IO to stretch into bigger home |
*This is the most misunderstood aspect of IO loans. The lender does not let you qualify on the lower IO payment — qualifying always uses the full amortizing payment. IO benefits monthly cash flow only, not borrowing power. If IO is the only way you "qualify," you're buying too much house.
April 2026 illustrative rates. Contact Ethan for current pricing.
730 credit · Strong future income · 10-yr IO
760 credit · RSU vesting in 3 years · IO bridge
740 credit · 4-property DSCR investor · IO overlay
750 credit · Junior partner, distributions ramping
740 credit · Beach STR · Cash flow priority
First-time buyer · Conservative profile · Long-term own
*"Payment Jump at IO End" shows the increase from IO payment to fully amortizing P+I starting in year 11 (or 6/8 for 5/7-yr IO). Borrower must plan to refinance, sell, or have income to support this jump.
NEXA accesses 200+ wholesale lenders. Below are the top Non-QM partners for this program.
Angel Oak and Deephaven are the strongest on IO products in Texas. UWM and others offer conventional IO at agency limits. For investment property IO, Kiavi and Newfi handle DSCR+IO overlays. NEXA confirms current IO programs and rate adjustments — IO product availability fluctuates with broader rate environment.
| Factor | Interest Only | Standard Amortizing |
|---|---|---|
| Initial Monthly Payment | ~30% lower | Full P+I |
| Principal Build During IO | ZERO | Steady build |
| Total Interest Paid (full term) | Substantially higher | Lower |
| Payment Shock at IO End | 40–60% jump | None |
| Best Use Case | Short-term hold, cash flow priority | Long-term ownership |
| Rate Premium | +0.5% to +1.0% vs amortizing | Baseline |
| Equity Build Source | Property appreciation only | P+I + appreciation |
| Refinance Pressure at Yr 10 | HIGH — must refi or sell | None |
| Best For | Investors, high-income pros, short-term own | First-time, long-term, conservative |
Interest Only is a strategic tool, not a qualifying tool. It works for borrowers with specific cash-flow optimization needs. It fails for borrowers using IO to stretch into homes they can't truly afford.
At year 10, payment jumps from $3,163 IO to $4,470 amortizing (just example) — 41% increase. Borrowers who didn't plan get crushed. Solution: Always plan refinance or sale before IO ends. Set calendar reminders 18 months before IO expiration to start refinance planning.
IO does NOT help qualifying — lenders use the fully amortizing payment for DTI. If IO is the only way you "qualify," you're buying too much house. Solution: Buy what you qualify for amortizing. Use IO for cash-flow optimization only.
IO theoretically saves principal payment to invest elsewhere at higher returns. In practice, most borrowers spend the difference. Solution: Set up automatic transfer of monthly savings to a separate investment account. If you won't commit to this, IO is just a more expensive way to own the home.
IO's equity-build assumption is property appreciation. If your property is flat or declines during the 10-year IO period, you have zero equity build AND face payment shock. Solution: Don't use IO in declining or uncertain appreciation markets.
You plan to refinance at year 10. Rates have risen 2%. Refinance no longer makes sense. Now you face payment shock at higher rates. Solution: Build flexibility — strong reserves, conservative purchase, multiple exit paths (sale + refi).
IO cash-out on Texas homestead still triggers 50(a)(6): 80% LTV cap, 12-day notice, 2% closing-cost cap, in-person closing. Solution: Use Texas-experienced wholesale partner. Build 12-day notice into closing timeline.
Investor uses IO to maximize cash flow on rental. Rate environment shifts and tenant turnover at year 9. Now facing payment shock with vacant property. Solution: Maintain DSCR 1.25+ with IO payment to buffer for property cycle disruptions.
Some Non-QM lenders offer shorter IO periods (5 or 7 years) at slightly better rates. This compresses the timeline dramatically. Solution: Almost always pick 10-year IO unless there's a specific reason (planned sale in 5 years). The shorter IO period's rate savings rarely justify the reduced flexibility.
Ethan models IO vs amortizing comparison across your specific scenario — payment difference, equity build, refinance pathways. Free analysis to determine if IO actually saves you money in YOUR situation.
