An interest-only loan requires the borrower to pay only accrued interest each period, with the full principal balance due at maturity, which maximizes cash flow during the loan term. An amortizing loan requires payments that include both interest and a portion of principal, gradually paying down the balance and building equity through scheduled payments. Bridge loans are typically interest-only; permanent loans are often amortizing or a mix of interest-only followed by amortization.
Quick Comparison
Key attributes side by side.
| Attribute | Interest-Only | Amortizing |
|---|---|---|
| Payment Composition | Interest only; no principal reduction | Interest plus scheduled principal paydown |
| Cash Flow Impact | Lower monthly payment, maximizes free cash flow | Higher monthly payment, reduces free cash flow |
| Principal at Maturity | Full original balance due (balloon) | Reduced balance due, based on amortization schedule |
| Typical Use | Bridge loans, construction loans, value-add deals | Permanent loans on stabilized, cash-flowing assets |
| Term Structure | Often the full loan term or an initial period | Often a 25-30 year schedule with a shorter loan term |
| Refinance Risk | Higher; full balance must be repaid or refinanced | Lower; balance shrinks as the loan matures |
| DSCR Impact | Higher DSCR for a given NOI | Lower DSCR for a given NOI |
In Depth
An interest-only loan requires the borrower to pay only the interest accrued each period, with none of the payment applied toward the principal balance. The full original loan amount remains due at maturity, either paid off through a sale, a refinance, or a balloon payment from other capital sources. This structure maximizes free cash flow during the loan term, since every dollar of net operating income above the interest payment flows to the borrower rather than being absorbed by principal reduction, which is why interest-only is the default structure for bridge and construction loans.
Interest-only periods are especially common during a property's transition, when cash flow may be lower or less predictable while a renovation, lease-up, or repositioning plan is underway. Freeing up cash flow during this period gives the sponsor more room to fund capital improvements, cover carrying costs on vacant space, and avoid drawing down reserves just to make a principal payment the property is not yet generating enough income to support comfortably.
The tradeoff of an interest-only structure is that it does not reduce leverage over time, so the borrower faces the full original balance at maturity, sometimes called balloon risk. If the property has not appreciated or the sponsor cannot refinance or sell as planned, repaying an interest-only balloon can be difficult, particularly in a tighter credit market. Sponsors using interest-only financing should have a clear, realistic exit strategy, since there is no built-in principal reduction to fall back on if the exit is delayed.
In Depth
An amortizing loan requires each payment to include both interest and a portion of principal, calculated so that the loan balance gradually declines over a set schedule, commonly 25 to 30 years for commercial real estate even when the loan itself matures much sooner. Early in the schedule, most of each payment goes toward interest, with the principal portion increasing gradually as the balance shrinks, a pattern typical of standard mortgage amortization.
Amortization builds equity in the property automatically as the loan balances down, which reduces the lender's risk over time and lowers the amount due at maturity or refinance. This is the standard structure for permanent loans on stabilized, cash-flowing properties, since the property's income is reliable enough to support the higher payment that comes with principal reduction. Many permanent loans mature well before the amortization schedule is complete, at which point the remaining balance is refinanced or repaid, a structure often described as amortizing with a balloon.
The cost of amortization is reduced current cash flow, since a portion of every payment goes to paying down principal rather than to the borrower. This can matter to sponsors who are targeting current cash-on-cash returns for investors, since amortization directly reduces distributable cash flow relative to an interest-only structure on the same loan amount and rate. Some permanent loans offer an initial interest-only period before amortization begins, giving the sponsor a hybrid of both structures during the early years of ownership.
Key Differences
Principal: Interest-only loans defer all principal to maturity; amortizing loans reduce principal with every payment.
Cash flow: Interest-only maximizes current free cash flow; amortization reduces it in exchange for building equity.
Typical use: Bridge and construction loans are usually interest-only; stabilized permanent loans are often amortizing.
Maturity risk: Interest-only carries full balloon risk; amortizing loans leave a smaller balance due at maturity.
DSCR: Interest-only produces a higher DSCR for the same NOI than an amortizing structure would.
Hybrid structures: Many permanent loans combine an initial interest-only period with amortization thereafter.
Decision Guide
Practical scenarios to help you decide.
Going deeper
A $10 million loan at an illustrative 7% rate structured as interest-only produces annual payments of exactly $700,000 for the full term, with the entire $10 million balance still due at maturity, illustrative figures only.
The same loan amortizing over 30 years at the same rate produces annual payments of roughly $798,000, about $98,000 a year more, but by the end of a 5-year term the balance has paid down to approximately $9.4 million, reducing the amount due at maturity by roughly $600,000. The interest-only structure gives the sponsor an extra $98,000 a year in distributable cash flow; the amortizing structure gives the sponsor a $600,000 smaller balloon payment to refinance or repay at the end of the term.
Over the full five years, the interest-only structure delivers roughly $490,000 more in cumulative distributable cash flow to the sponsor and investors, money that can be reinvested, held as reserves, or distributed along the way. The amortizing structure instead delivers that value at the back end, as a smaller balance to refinance, which matters most to a sponsor who is worried about refinance proceeds or a tighter lending market at the time the loan matures.
An interest-only loan's note simply states the fixed periodic interest payment and the full principal balance due at maturity, with no amortization schedule to reference. Loan agreements for interest-only bridge loans commonly pair this structure with a leasing or renovation reserve, funded at closing, to cover the gap if the property's cash flow has not yet stabilized enough to cover even the interest-only payment.
An amortizing loan's note includes a detailed amortization schedule, typically 25 to 30 years, showing the principal and interest split of every payment and the resulting balance over time, even when the loan itself matures well before the schedule completes. Many permanent loan agreements combine both, specifying an initial interest-only period, often one to three years, followed by amortization for the remainder of the term, and the note must clearly define when that transition occurs.
Early in a transitional deal, interest-only structuring preserves cash for renovation, lease-up costs, and reserves precisely when the property's income is least predictable, which is why nearly every bridge and construction loan defaults to this structure rather than requiring principal paydown on an asset that is not yet stabilized.
As a property stabilizes and moves toward permanent financing, amortization becomes more common and more affordable, since the higher, income-reducing payment is now matched against income that is stable enough to support it, and the resulting principal paydown improves the sponsor's refinance economics by reducing the balance a takeout lender needs to cover.
Investors evaluating a deal mid-hold should also watch how the two structures affect reported returns differently. A property on an interest-only loan shows higher current cash-on-cash returns than an identical property on an amortizing loan, even though the amortizing property is quietly building more equity through principal paydown, a distinction worth understanding when comparing distribution reports across deals financed on different loan structures.
The tradeoff is current cash flow against future balance, and the right answer depends heavily on the property's stage and the sponsor's plan for the loan's maturity.
Our Role
H Equities structures its bridge and mezzanine loans as interest-only, matching the way most transitional commercial real estate deals are underwritten. Keeping debt service to interest alone during the loan term preserves cash flow for renovation, lease-up, and carrying costs while the sponsor executes the business plan, and we work with sponsors to size that interest-only period around a realistic refinance or sale timeline.
FAQ
Bridge loans finance transitional properties that are not yet generating stabilized cash flow, so requiring principal payments on top of interest could strain the deal during renovation or lease-up. Interest-only structuring preserves cash for capital improvements and carrying costs while the sponsor executes the business plan.
The full original principal balance is due, typically repaid through a sale of the property or a refinance into a new loan, often permanent financing once the property has stabilized. This lump-sum obligation is commonly called a balloon payment.
The interest rate itself is not necessarily higher, but total interest paid over the life of the loan is higher because the principal balance never declines during the interest-only period, unlike an amortizing loan where the balance, and the interest charged on it, shrinks over time.
Yes. Many permanent loans include an initial interest-only period, often one to three years, followed by standard amortization for the remainder of the term. This hybrid structure gives the borrower a cash flow benefit early on while still building equity over the life of the loan.
Related
Tell us about your transaction and we'll help you identify the right financing structure: bridge, mezzanine, preferred equity, or co-GP.