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Defeasance Calculator - Calculator City

Defeasance Calculator






Expert Defeasance Calculator | SEO-Optimized Financial Tool


Expert Defeasance Calculator

Estimate the cost to exit your commercial mortgage by substituting collateral.

Defeasance Cost Estimator



The outstanding principal on your commercial loan.



The annual interest rate of your existing mortgage.



The number of monthly payments left until loan maturity.



The current market yield for the government securities portfolio (e.g., U.S. Treasuries).



Includes consultant, servicer, legal, and other closing costs.


Total Estimated Defeasance Cost
$0.00

Remaining Loan Balance
$0.00

Securities Portfolio Cost
$0.00

Defeasance Premium / (Discount)
$0.00

The total cost is the sum of the defeasance premium (or discount) and third-party fees. The premium is the difference between the cost of the securities portfolio needed to cover your loan payments and your current loan balance.

Defeasance Cost Breakdown
Component Amount
Required Securities Portfolio Cost $0.00
Remaining Loan Balance $0.00
Defeasance Premium / (Discount) $0.00
Third-Party & Closing Fees $0.00
Total Estimated Cost $0.00
Bar chart comparing loan balance and securities portfolio cost Loan Balance vs. Portfolio Cost

Loan Balance

Portfolio Cost

This chart visually compares your outstanding loan balance with the market cost of the securities portfolio required for defeasance.

What is a Defeasance Calculator?

A defeasance calculator is a financial tool designed to estimate the cost associated with exiting a fixed-rate commercial real estate loan, such as a CMBS (Commercial Mortgage-Backed Security) loan, before its maturity date. Unlike a simple prepayment, defeasance is a complex process where the borrower replaces the real estate collateral with a portfolio of government securities (typically U.S. Treasuries). This new portfolio is structured to generate cash flows that perfectly match the remaining debt service payments of the original loan, ensuring the lender receives the exact same yield they were promised. Our defeasance calculator simplifies this complexity into an easy-to-understand estimate.

Who Should Use a Defeasance Calculator?

This tool is essential for commercial property owners, real estate investors, brokers, and financial advisors who are considering selling or refinancing a property that is encumbered by a loan with a defeasance clause. It is particularly relevant for those with CMBS loans, which commonly prohibit traditional prepayment and require defeasance. Using a defeasance calculator is the first step in evaluating the financial viability of such a transaction.

Common Misconceptions About Defeasance

A primary misconception is that defeasance is a “penalty.” It is more accurately described as a collateral substitution. Another is that the cost is always prohibitively expensive. While it can be substantial, the cost is highly dependent on the interest rate environment. If current government security yields are higher than the loan’s interest rate, the defeasance could theoretically result in a discount (though this is rare). Our defeasance calculator helps clarify the actual cost based on current market conditions.

Defeasance Calculator Formula and Mathematical Explanation

The core of a defeasance calculator‘s logic involves calculating the present value of the remaining loan payments, discounted at the current yield of the replacement securities. This determines the cost of the securities portfolio.

  1. Calculate Monthly Loan Payment (P): First, we must know the consistent monthly payment of the loan. This is often known, but can be calculated if the original loan terms are available.
  2. Calculate Securities Portfolio Cost (PV): This is the main calculation. It is the present value of all remaining loan payments. The formula is:
    PV = P * [ (1 – (1 + r)^-n) / r ]
    Where ‘P’ is the monthly loan payment, ‘n’ is the number of remaining payments, and ‘r’ is the monthly yield of the replacement securities.
  3. Calculate Defeasance Premium/Discount: This is the difference between the securities portfolio cost and the remaining loan balance.
    Premium = PV – Remaining Loan Balance
  4. Calculate Total Defeasance Cost: This is the sum of the premium and all third-party fees.
    Total Cost = Premium + Fees

Our defeasance calculator performs these steps instantly to provide a comprehensive estimate.

Variables in the Defeasance Calculation
Variable Meaning Unit Typical Range
Loan Balance Current outstanding principal Dollars ($) $1M – $100M+
Loan Interest Rate The note rate on the existing mortgage Percent (%) 3% – 8%
Remaining Term Months left until loan maturity Months 12 – 120+
Securities Yield Market yield on replacement government bonds Percent (%) 1% – 6%
Fees Costs for consultants, servicers, and lawyers Dollars ($) $50,000 – $100,000+

Practical Examples (Real-World Use Cases)

Example 1: Refinancing in a Lower-Yield Environment

An investor owns a building with a $10 million loan at a 6.0% interest rate, with 5 years (60 months) remaining. They want to refinance to take advantage of lower market rates. Current yields on 5-year Treasuries are 4.0%. Using the defeasance calculator:

  • Inputs: Loan Balance: $10M, Interest Rate: 6.0%, Remaining Term: 60 months, Securities Yield: 4.0%, Fees: $80,000.
  • Calculation: The lower securities yield means the portfolio needed to generate the 6.0% cash flow will cost *more* than the $10M loan balance. The calculator estimates a portfolio cost of approximately $10,540,000.
  • Output: The defeasance premium is $540,000. The total cost is $540,000 (premium) + $80,000 (fees) = $620,000. The investor must decide if the savings from the new, lower-rate loan justify this exit cost.

Example 2: Selling a Property in a Higher-Yield Environment

A company needs to sell a property with a $3 million loan at a 4.5% interest rate, with 3 years (36 months) remaining. Market upheaval has pushed Treasury yields up to 5.0%.

  • Inputs: Loan Balance: $3M, Interest Rate: 4.5%, Remaining Term: 36 months, Securities Yield: 5.0%, Fees: $65,000.
  • Calculation: Because the securities yield (5.0%) is higher than the loan rate (4.5%), the portfolio required to match the payments will cost *less* than the remaining loan balance. The defeasance calculator estimates a portfolio cost of approximately $2,958,000.
  • Output: This results in a defeasance *discount* of -$42,000. The total cost is -$42,000 (discount) + $65,000 (fees) = $23,000. This is a very favorable outcome, making the sale highly attractive.

How to Use This Defeasance Calculator

This defeasance calculator is designed for simplicity and accuracy. Follow these steps to get your estimate:

  1. Enter Loan Balance: Input the current principal balance of your mortgage.
  2. Enter Interest Rate: Provide the fixed annual interest rate on your loan note.
  3. Enter Remaining Payments: Input the number of months remaining until your loan’s maturity date.
  4. Enter Securities Yield: Find the current yield for a U.S. Treasury security with a maturity that matches your remaining loan term. This is a critical input for an accurate defeasance calculator result.
  5. Enter Third-Party Fees: Input an estimate for defeasance costs. A typical range is $60,000 to $100,000, but a defeasance consultant can provide a precise quote.

The results will update in real-time. The “Total Estimated Defeasance Cost” is your primary result, representing the total cash required to complete the process. The intermediate values show you how that cost is derived.

Key Factors That Affect Defeasance Calculator Results

Several dynamic factors influence the outcome of a defeasance calculation. Understanding them is key to strategic financial planning.

  • The Spread Between Loan Rate and Securities Yield: This is the most critical factor. A larger positive spread (loan rate > yield) results in a higher defeasance cost. This is because you must buy a more expensive, lower-yielding portfolio to cover the higher-coupon loan payments.
  • Remaining Loan Term: The longer the remaining term, the more amplified the effect of the interest rate spread becomes. A small spread can lead to a large cost if stretched over many years.
  • Loan Balance: A larger loan balance naturally scales all calculations, leading to a larger absolute premium or discount.
  • Third-Party Fees: These fees, while smaller than the portfolio cost, are a significant cash expense and can range from $50,000 to over $100,000 depending on the complexity and size of the deal.
  • Yield Curve Shape: The shape of the Treasury yield curve can impact the cost. An inverted yield curve might make shorter-term defeasances more or less expensive than longer-term ones, a nuance a sophisticated defeasance calculator considers.
  • Choice of Securities: While U.S. Treasuries are standard, some loan documents permit the use of other agency securities which may have slightly higher yields, potentially reducing the portfolio cost.

Frequently Asked Questions (FAQ)

1. Is defeasance the same as yield maintenance?

No. Defeasance is a collateral swap, while yield maintenance is a prepayment penalty paid directly to the lender. In defeasance, the loan remains active but is assumed by a successor entity, secured by securities. With yield maintenance, the loan is paid off and extinguished. Our site offers a yield maintenance calculator for comparison.

2. Why is defeasance required for CMBS loans?

CMBS loans are pooled together and sold to investors who expect a steady stream of income over the loan’s life. Defeasance ensures these investors continue to receive their expected cash flow, even if the original borrower exits the loan, thereby preserving the integrity of the security.

3. Can I perform the defeasance myself?

It is strongly discouraged. Defeasance is a highly complex legal and financial process involving multiple parties, including a loan servicer, rating agencies, and specialized attorneys. Hiring an experienced defeasance consultant is standard practice and essential for a smooth transaction.

4. How accurate is this defeasance calculator?

This defeasance calculator provides a highly accurate estimate based on the inputs provided. However, the final cost can only be locked in when the securities are purchased on the closing date, as bond yields fluctuate continuously. It is a planning tool, not a final quote.

5. Are defeasance costs tax-deductible?

Yes, the costs associated with a loan defeasance are generally considered a cost of selling or refinancing the property and can be deducted in the year the transaction occurs. Consult with a tax professional for advice specific to your situation.

6. What is a “lockout period”?

A lockout period is a span of time at the beginning of a loan term during which the borrower is prohibited from any form of prepayment, including defeasance. For CMBS loans, this is often two years from the securitization date, due to REMIC rules.

7. What is “residual value” in a defeasance?

Residual value refers to any excess cash generated by the securities portfolio after all loan payments have been made. This can happen due to “float” (interest earned on cash held briefly) or efficiencies in portfolio construction. Ownership of this residual value is a point of negotiation and should be clarified in the defeasance documents.

8. Can a defeasance save me money?

While defeasance itself is a cost, the overall transaction it enables (a sale at a market peak or a refinance to a much lower interest rate) can be highly profitable. Using a defeasance calculator is the first step to determining if the benefits of the transaction outweigh the exit costs.

© 2026 Financial Tools & Content. All Rights Reserved. This calculator is for estimation purposes only.



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