Definition
Amortization refers to the schedule by which a loan's principal balance is paid down over its term through periodic payments. Each payment on a fully amortizing loan covers both accrued interest and a portion of principal, with the principal share growing over time as the outstanding balance shrinks. Commercial real estate loans use several amortization structures. A fully amortizing loan pays off the entire principal balance by the end of the term, common in long-term permanent financing such as agency multifamily loans with 25 to 30 year amortization schedules. A partially amortizing loan follows an amortization schedule longer than the actual loan term, so a lump sum balloon payment is due at maturity, common with 10-year commercial mortgages amortized over 25 or 30 years. An interest-only loan has no amortization during some or all of the term, so the borrower pays only interest and the full principal balance is due at maturity or when amortization begins. The amortization structure directly affects monthly debt service, which in turn affects debt service coverage ratio and how much loan proceeds a property's income can support.
How It Works
The lender and borrower agree on an amortization period, typically expressed in years, and a payment frequency, usually monthly. A standard amortization schedule calculates a level payment amount such that, if paid consistently for the full amortization period at a fixed rate, the loan balance would reach zero. Early payments are weighted heavily toward interest since the balance is largest; later payments are weighted more toward principal as the balance shrinks. When the loan term is shorter than the amortization period, such as a 10-year loan amortized over 30 years, the borrower makes level payments based on the 30-year schedule throughout the 10-year term, then owes the remaining unpaid balance as a balloon payment at maturity, typically refinanced into a new loan.
Example
For example, a borrower takes out a $10,000,000 loan at 6% interest with a 30-year amortization schedule. The level monthly payment is approximately $59,955, covering both interest and principal. In the first month, roughly $50,000 goes to interest and $9,955 to principal. By year 20, the split shifts, with a much larger share of each payment reducing principal. If the loan has a 10-year term, the borrower makes these payments for 120 months, then owes the remaining principal balance, approximately $8,200,000, as a balloon payment due at maturity.
Why It Matters
Amortization directly shapes a property's cash flow, since principal payments reduce distributable income even though they build equity. A shorter amortization period increases monthly debt service and reduces DSCR, which can limit how much a lender will loan against a given income stream, while a longer amortization period lowers payments but slows the pace at which the borrower builds equity through principal paydown. Understanding amortization helps sponsors compare loan offers on an apples-to-apples basis, since two loans with the same rate and amount can have very different monthly payments depending on their amortization schedules.
In depth
Amortization Versus Interest-Only in Bridge Lending
Bridge loans are almost always structured interest-only, since the borrower's goal during a short transitional hold is to preserve cash flow for renovation, lease-up, or debt service coverage while the business plan is executed, not to build equity through principal paydown. Permanent loans, by contrast, typically amortize over 25 to 30 years, gradually reducing the balance over a much longer hold.
This distinction matters when a sponsor refinances out of a bridge loan into permanent debt: the new loan's amortization schedule, not just its rate, materially affects monthly cash flow and the DSCR the property needs to support going forward.
A small subset of loans include a negative amortization feature, where scheduled payments are lower than the interest actually accruing, causing the loan balance to grow rather than shrink over time. This structure is uncommon in standard commercial lending and typically appears only in specific workout or restructuring situations rather than as a feature of a newly originated loan.
How Amortization Periods Vary by Property Type
Lenders set amortization periods partly based on the expected useful life of the property's structure and systems.
A shorter amortization period increases the monthly payment and reduces DSCR at a given rate, which can limit how much a lender will loan against the same income stream compared to a longer schedule.
Land and other non-income-producing collateral generally do not carry an amortization schedule at all, since there is no operating income to service a principal payment, which is one of several reasons land loans are structured and priced so differently from loans on improved, income-generating property.
- Multifamily: often 30 years, reflecting long asset life and stable income
- Industrial: often 25 to 30 years
- Office and retail: often 20 to 25 years, shorter where lease rollover risk is higher
- Hotels: often 20 to 25 years, reflecting more volatile income
Worked Scenario: Prepayment and Remaining Balance
For example, using a $10,000,000 loan at 6% interest with a 30-year amortization and a monthly payment near $59,955, after 5 years of payments the outstanding balance has declined to roughly $9,340,000, since most of each early payment covers interest rather than principal.
A borrower who refinances or sells at year 5 needs to satisfy this remaining balance, plus any prepayment penalty specified in the loan documents, from sale proceeds or a new loan, which is why sponsors model expected loan balance at their anticipated exit date, not just the original loan amount, when underwriting a deal's return.
By comparison, a borrower who instead chose a 25-year amortization schedule on the same $10,000,000 loan would pay approximately $64,430 per month, roughly $4,475 more each month than the 30-year schedule, but would reach a remaining balance of only about $7,930,000 by year 5, over $1,400,000 lower than the 30-year schedule's balance at the same point.
Negotiating an Interest-Only Period
On permanent loans that do amortize, sponsors frequently negotiate an initial interest-only period, commonly 1 to 3 years, before principal payments begin. This preserves cash flow during early years when a property may still be completing lease-up or absorbing recent renovation costs, improving near-term DSCR and distributable cash to investors.
Lenders typically price interest-only periods into the rate or require a stronger debt yield to offset the reduced principal paydown, so sponsors should weigh the near-term cash flow benefit against a potentially higher effective cost of capital over the full loan term.
Some lenders offer a partial interest-only structure instead of a full interest-only period, amortizing only a portion of the loan while keeping the remainder interest-only, which splits the difference between preserving cash flow and building at least some equity through principal paydown during the early years of the loan term.
Tax Treatment of Principal Versus Interest Payments
Interest payments are generally deductible as an operating expense, directly reducing taxable income in the year paid, while principal payments are not deductible since they represent repayment of borrowed capital rather than a cost of doing business. This is one reason interest-only bridge loans can be tax-efficient during a renovation or lease-up period.
Sponsors should discuss the specific tax treatment of loan fees, points, and any original issue discount with their accountant, since these items are often amortized over the loan term for tax purposes rather than deducted immediately, and treatment can vary based on entity structure.
Cost segregation studies, which accelerate depreciation on specific building components, are a separate but related planning tool sponsors often pursue alongside financing decisions, since accelerated depreciation can offset taxable income in early years when a property may also be carrying higher debt service relative to its stabilized income.
H Equities
H Equities structures bridge loans as interest-only with terms of 12 to 24 months, allowing sponsors to preserve cash flow during a property's transition before amortizing permanent financing takes over. Learn more
Frequently Asked Questions
What is the difference between amortization and loan term?
Loan term is how long the loan lasts before it matures and must be repaid or refinanced. Amortization period is the schedule used to calculate payments. The two can differ, as when a 10-year loan is amortized over 30 years, leaving a balloon payment at maturity.
Why do commercial loans often have interest-only periods?
Interest-only periods preserve cash flow during a property's transitional phase, such as lease-up or renovation, when income may not yet support both interest and principal payments. Once the property stabilizes, the loan may convert to an amortizing schedule or be refinanced into permanent financing.
How does amortization affect DSCR?
A shorter amortization period increases the principal portion of each payment, raising total debt service and lowering DSCR for a given loan amount. Lenders often lengthen amortization to keep DSCR within required thresholds when a property's income is limited. Sponsors sometimes negotiate longer amortization specifically to keep DSCR comfortably above the lender's minimum threshold.
Related Terms
Interest-Only Loan
A loan where the borrower pays only interest during the loan term (no principal reduction), resulting in lower monthly payments but a full principal balance due at maturity.
Common CRE Bridge Loan Terms
The duration and structural features of a bridge loan, including term length, extension options, interest rate structure, prepayment provisions, and reserve requirements.
Senior Debt in Commercial Real Estate
The first mortgage or primary loan on a property, holding the highest priority claim on cash flow and sale proceeds in the capital stack.
Permanent Financing in CRE
Long-term financing (5-30 years) for stabilized commercial properties, replacing bridge or construction loans with lower rates and amortizing payment structures.
Debt Service Coverage Ratio (DSCR)
A metric that measures a property's net operating income relative to its total debt obligations, indicating the property's ability to service its debt.