Interest-only commercial mortgages let property owners pay only the interest on their loan for a set period — often three to ten years, and in some cases the full loan term — instead of paying down principal each month. The result is a meaningfully lower monthly payment, which frees up cash flow for renovations, lease-up costs, distributions to investors, or simply a stronger debt service coverage cushion.
These loans are built for investors and owners who value cash flow today over equity buildup tomorrow. Common users include value-add investors repositioning a property before a sale or refinance, sponsors syndicating deals where investor distributions matter, owners of stabilized assets financed through CMBS or debt funds, and borrowers bridging a short hold period who never intend to keep the loan to maturity.
Interest-only structures make the most sense when your exit plan doesn’t depend on amortization: you expect to sell, refinance, or recapitalize before principal paydown would have made a real difference. They make less sense for long-term holders who want to steadily de-lever. This guide covers how interest-only commercial mortgages are structured, what lenders require, current rate ranges in 2026, the honest trade-offs, and how to apply through RefiLoop’s lender marketplace.
What Is Interest-Only Loans?
An interest-only loan is a commercial mortgage on which your scheduled monthly payment covers only the interest accruing on the outstanding balance — no principal. If you borrow $2,000,000 at 6.5% interest-only, your monthly payment is about $10,833. The same loan on a 25-year amortization schedule would run about $13,504 per month. That difference — roughly $2,670 a month, or $32,000 a year — is the core appeal.
A few key terms to know:
- Interest-only (IO) period: The stretch of the loan during which no principal is due. This can be partial (the first 1–10 years of a longer loan) or full-term (interest-only until maturity).
- Amortization: The scheduled repayment of principal. On a partial-IO loan, amortization “kicks in” after the IO period ends, and payments step up.
- Balloon payment: The remaining principal due at maturity. On a full-term IO loan, the balloon equals the entire original loan amount, because no principal was ever repaid.
- DSCR (debt service coverage ratio): Net operating income divided by annual debt service. Because IO payments are lower, the same property shows a higher DSCR on an interest-only basis — a fact lenders account for in underwriting.
Interest-only terms are not a separate loan product so much as a feature layered onto other products: bank loans, CMBS loans, agency multifamily debt, bridge loans, and debt-fund financing can all carry IO periods.
How Interest-Only Loans Work
The structure varies by lender type, but most interest-only commercial mortgages fall into one of three shapes:
1. Partial interest-only on a permanent loan. A common bank or agency structure: a 10-year term with a 30-year amortization schedule, where the first 2–5 years are interest-only. During the IO years you pay interest alone; afterward, payments recast to amortize the full balance over the remaining schedule. Because the principal hasn’t shrunk during the IO period, the post-IO payment is higher than it would have been on a day-one amortizing loan.
2. Full-term interest-only. Most common on CMBS loans and on lower-leverage deals generally. A 10-year, full-term IO CMBS loan means 120 payments of interest only, then a balloon payment of 100% of the original principal at maturity. Borrowers almost always retire the balloon by refinancing or selling. Lenders reserve full-term IO for stronger deals — typically 60% LTV or below with solid in-place cash flow.
3. Interest-only bridge or construction loans. Nearly all commercial bridge loans are interest-only by design, usually with floating rates and 1–3 year terms. The lender expects the property to be sold or refinanced into permanent debt at exit, so amortization would serve no purpose. Many bridge loans fund an interest reserve at closing to cover payments while the property stabilizes.
Rate type. Interest-only availability doesn’t dictate rate type. Bank and agency IO loans are usually fixed-rate. Bridge and debt-fund IO loans typically float over SOFR, often with an interest-rate cap required. CMBS full-term IO loans are fixed for the full 10-year term.
The balloon is the defining risk. Whatever the structure, an IO loan ends with more principal outstanding than an amortizing loan would. Your exit — sale or refinance — has to work at that higher balance, under whatever rates and valuations prevail at maturity. Running the numbers both ways in a commercial mortgage calculator before you commit is worth the ten minutes.
Interest-Only Loans Requirements
Lenders offset the lack of principal paydown with tighter underwriting elsewhere. Expect requirements in these ranges:
| Criteria | Typical Range |
|---|---|
| Maximum LTV | 55–70% (full-term IO usually ≤60–65%; partial IO up to 70–75% on multifamily) |
| Minimum DSCR | 1.20x–1.35x, often underwritten on the *amortizing* payment, not the IO payment |
| Debt yield (CMBS/debt funds) | 8–10%+ |
| Credit score | 680+ typical for bank loans; asset-based lenders are more flexible |
| Net worth | Roughly equal to the loan amount (common bank/agency guideline) |
| Liquidity | 6–12 months of debt service post-closing |
| Property occupancy | 85%+ for stabilized permanent IO; lower is fine for bridge |
A few nuances worth understanding:
- Leverage drives IO availability. The single biggest factor in how much interest-only a lender will grant is leverage. At 55% LTV, full-term IO is routinely available on CMBS and often on bank deals. At 70%+, you may get one or two IO years, or none.
- DSCR is often stress-tested. Many lenders qualify the loan on the amortizing payment even during the IO period, or on an underwritten interest rate above the actual note rate. Use a DSCR calculator to see how your property performs under both the IO payment and the fully amortizing payment before you apply.
- Documentation mirrors any commercial mortgage: 2–3 years of property operating statements, a current rent roll, trailing-12 financials, personal financial statement and schedule of real estate owned for guarantors, plus third-party reports (appraisal, environmental, and often a property condition report) ordered during underwriting.
Eligible property types include multifamily, office, retail, industrial, self-storage, hospitality, and mixed-use, though IO generosity varies — multifamily and industrial currently see the most flexible terms.
Current Interest-Only Loans Rates
Interest-only structuring itself adds little or nothing to the rate on low-leverage deals; on higher-leverage deals, lenders may price IO 10–25 basis points above an otherwise identical amortizing loan. What matters more is the product delivering the IO feature. As of early 2026, typical ranges look like this:
| Loan Type | Typical Rate Range (2026) | IO Availability |
|---|---|---|
| Agency multifamily (Fannie/Freddie) | 5.60% – 6.60% fixed | 1–5 yrs partial IO; full-term at low leverage |
| Bank/credit union permanent | 6.25% – 7.50% fixed | 1–3 yrs partial IO, case by case |
| CMBS/conduit | 6.00% – 7.25% fixed | Full-term IO common at ≤60–65% LTV |
| Bridge/debt fund (floating) | SOFR + 2.75% – 6.00% (≈7.25% – 10.5% all-in) | Full-term IO standard |
| SBA 504/7(a) | 6.25% – 8.50% | Rare; IO generally limited to construction phase |
These are market ranges, not quotes — actual pricing depends on your deal. Factors that move your rate:
- Leverage and debt yield. Lower LTV and higher debt yield earn better pricing and more IO.
- Property type and market. Multifamily and industrial in strong metros price tightest; office and hospitality carry premiums.
- Loan size. Loans above $5–10 million access more competitive capital (CMBS, agency, life-company-style execution) than sub-$2 million deals.
- Tenancy and lease term. Long-term credit tenants compress spreads; near-term rollover widens them.
- Index movement. Fixed rates price off Treasuries; floating deals ride SOFR. Both move weekly, so lock timing matters.
Because IO terms vary so widely lender to lender, this is a product where shopping genuinely pays: one lender may cap you at two IO years while another offers full-term at the same rate.
Pros and Cons
| Pros | Cons |
|---|---|
| 15–25% lower monthly payments versus an amortizing loan | No equity buildup from principal paydown — your balance never shrinks |
| Stronger in-place cash flow for distributions, capex, or reserves | Larger balloon at maturity, so more refinance/exit risk |
| Higher cash-on-cash returns during the hold period | Payment shock when a partial IO period ends and amortization begins |
| Interest is generally tax-deductible as a business expense (confirm with your CPA) | If values fall, you can end up with less equity cushion than an amortizing borrower |
| Aligns payments with a value-add or short-hold business plan | Often requires lower leverage or stronger DSCR to qualify |
| Frees capital to redeploy into higher-return uses | May price slightly wide of an identical amortizing loan at higher leverage |
The honest summary: interest-only is a cash-flow tool, not free money. Every dollar you don’t pay in principal is a dollar still owed at exit. If your business plan creates value faster than amortization would have — through NOI growth, appreciation, or redeploying the cash savings — IO wins. If the property just treads water, the amortizing borrower ends up better positioned at maturity.
When to Choose Interest-Only Loans
Interest-only structures fit best in these scenarios:
- Value-add repositioning. You’re buying a 70%-occupied apartment building, renovating units, and pushing rents. An interest-only bridge loan keeps payments manageable while NOI is depressed, and you refinance into permanent debt once stabilized. If your hold is under three years, compare terms on commercial bridge loans directly.
- Short expected hold. You plan to sell within 3–7 years. Principal paydown over that window is modest anyway, so trading it for cash flow costs little. Full-term IO CMBS loans are popular here — see our guide to CMBS loans for how conduit execution and IO terms interact.
- Syndications and funds prioritizing distributions. When investor returns are measured in cash-on-cash yield, the IO payment difference flows straight to distributions.
- Maturity coming due with rates elevated. If your existing loan is ballooning and today’s rates would crush an amortizing payment, an IO structure can keep DSCR workable while you wait for a better refinance window. Our commercial mortgage refinancing guide walks through timing and structuring options for maturing debt.
- Low-leverage borrowers optimizing returns. At 50–60% LTV, lenders hand out full-term IO readily, and the amortization you’re giving up matters less because your equity cushion is already deep.
Interest-only is usually the wrong choice for long-term holders (10+ years) who want to own the property free and clear, and for high-leverage borrowers who need amortization to rebuild an equity cushion. Before deciding, model both structures side by side with a commercial mortgage calculator and check how each payment affects your coverage in a DSCR calculator.
How to Apply
Getting an interest-only commercial mortgage through RefiLoop follows four steps:
- Request your quote. Tell us about your property, loan amount, and goals — including how much interest-only you want. It takes a few minutes and there’s no obligation.
- Compare matched offers. We put your deal in front of RefiLoop’s network of 7,000+ banks, credit unions, CMBS shops, agency lenders, and debt funds, and bring back the offers that fit — so you can compare IO terms, rates, and leverage side by side rather than taking the first structure a single lender allows.
- Complete underwriting. Once you pick a lender, you’ll submit operating statements, a rent roll, and personal financials while third-party reports are ordered. Gathering your file early — use our document checklist — routinely saves two to three weeks.
- Close and fund. Bank and agency IO loans typically close in 45–75 days; CMBS in 60–90; bridge loans in as little as 2–4 weeks.
Ready to see your interest-only options? See If You Qualify — get a custom quote from RefiLoop’s 7,000+ lender network.
Frequently Asked Questions
What are current interest-only commercial mortgage rates?
See the rates section above for full ranges. As of early 2026, fixed-rate interest-only loans generally price from the high-5% range (agency multifamily) to the mid-7% range (banks and CMBS), while floating-rate bridge loans run roughly 7.25%–10.5% all-in. Rates vary by property type, leverage, borrower strength, and market conditions, so treat published ranges as a starting point, not a quote.
How long does an interest-only loan take to close?
It varies by product type. Bridge and debt-fund loans can close in 2–4 weeks, bank and agency permanent loans typically take 45–75 days, and CMBS loans run 60–90 days. See the application process section above — having your documentation ready at the start is the single biggest factor in a fast close.
What credit score do I need?
A score of 680+ is typical for conventional bank financing, but commercial real estate lending is primarily asset-based. The property’s cash flow — measured by DSCR — matters more than personal credit, and many CMBS and debt-fund lenders will work with credit blemishes if the real estate performs.
What is the maximum LTV on an interest-only commercial loan?
Most lenders cap partial interest-only loans around 70–75% LTV, while full-term interest-only usually requires 60–65% LTV or lower. The lower your leverage, the more interest-only time lenders will offer — it’s the main lever borrowers have for negotiating longer IO periods.
Can I prepay an interest-only commercial mortgage?
Usually, but check the penalty structure. Fixed-rate bank loans often carry step-down penalties (e.g., 5-4-3-2-1%), CMBS loans typically require defeasance or yield maintenance, and bridge loans are the most flexible — many allow prepayment after a short minimum-interest period. If your plan involves selling or refinancing early, negotiate prepayment flexibility up front.
What happens when the interest-only period ends?
On a partial-IO loan, payments recast to amortize the full original balance over the remaining schedule, which produces a noticeable step-up — often 20–30% higher than the IO payment. On a full-term IO loan, the entire principal balance comes due as a balloon at maturity, which borrowers handle by refinancing or selling. Either way, plan your exit before the IO clock runs out, not after.
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Every lender treats interest-only differently — some cap it at two years, others offer full-term at the same price. The only way to know what your deal can command is to compare. Get a custom quote and see side-by-side interest-only offers from RefiLoop’s network of 7,000+ commercial lenders — it’s free, fast, and there’s no obligation.
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About David Greenbaum
David Greenbaum is a commercial mortgage broker and co-founder of RefiLoop. He specializes in helping commercial property owners refinance maturing loans between $200K and $15M across Texas, Florida, Georgia, North Carolina, Ohio, and other priority markets. With hands-on experience in commercial bridge loans, debt fund financing, and conventional CRE refinancing, David helps borrowers find the right capital source for their situation — not just the easiest one.