Defeasance vs Yield Maintenance: CRE Prepayment Guide

When you want to exit a fixed-rate commercial mortgage—whether to sell a property, refinance, or redeploy capital—you face two paths: defeasance or yield maintenance. This guide walks you through both options, explains how costs are calculated, and shows you how to determine which saves you more money.

Read time: 14 minutes | Updated April 2026

The Essential Difference

Defeasance:

You purchase U.S. Treasury securities that replicate the loan's remaining payment schedule. The property is released from the lien; the Treasuries remain pledged as collateral.

Yield Maintenance:

You pay a cash penalty to the lender equal to the present value of the interest rate differential over the remaining loan term. The loan is immediately paid off; you own the property free and clear.

What Is Defeasance?

Defeasance is a substitution mechanism built into most commercial mortgages—especially CMBS and agency loans. Instead of paying off the loan early with cash, you purchase a portfolio of U.S. Treasury securities (or government-backed securities) that are structured to generate cash flows matching each remaining scheduled debt service payment on the loan.

The Defeasance Process (Overview)

  1. Identify remaining loan payments: Principal and interest due on each payment date through maturity.
  2. Obtain Treasury yields: Get current market yields for Treasuries across the relevant maturities (typically 1- to 10-year Treasuries).
  3. Model a Treasury portfolio: Purchase Treasuries in quantities and maturities such that their cash flows exactly match each loan payment date.
  4. Price the portfolio: Calculate the total market value of the Treasury portfolio (the defeasance cost).
  5. Add transaction fees: Include legal, accounting, trustee, and intermediary fees (typically $50,000–$75,000).
  6. Close the defeasance: Wire the funds, Treasuries are purchased and placed in a successor borrower entity in trust.
  7. Release collateral: The original property is released from the mortgage lien; you now own it free and clear.

The key advantage: You own the property free and clear. The loan technically remains outstanding (held by a successor borrower entity), but you are released from liability and the property is no longer encumbered. The Treasuries pay down the debt automatically over time.

What Is Yield Maintenance?

Yield maintenance is a prepayment penalty—often called a "make-whole provision"—that protects the lender from losing profit when you prepay a fixed-rate loan. Instead of defeasance (which substitutes collateral), yield maintenance is a simple cash payment equal to the present value of the interest rate savings the lender will forgo.

The Yield Maintenance Formula

Yield Maintenance = PV of Interest Savings

Calculated as: Present Value of (Loan Rate – Current Treasury Rate) × Remaining Balance × Years Remaining

The calculation uses the current Treasury rate (typically the 10-year Treasury as a proxy for the loan's weighted average life) as the discount rate to compute the present value.

Example: Yield Maintenance Calculation

You have a $10M CMBS loan with a 4.5% coupon, 5 years remaining, and 10-year Treasury yielding 4.0%:

Loan Rate: 4.5%

Treasury Rate: 4.0%

Rate Differential: 0.5%

Remaining Balance: $10,000,000

Annual Interest Savings: $10M × 0.5% = $50,000/year

Present Value (5 years at 4% discount): ~$217,000

You would pay approximately $217,000 in yield maintenance to the lender and receive the $10M loan payoff in return. The property becomes free and clear.

Key point: Yield maintenance is always a cash cost. The higher the interest rate environment relative to your loan rate, the lower the penalty (sometimes approaching zero if rates have risen significantly). Conversely, if rates have fallen, the penalty is steep.

Defeasance vs Yield Maintenance: Side-by-Side

Aspect Defeasance Yield Maintenance
Mechanism Substitute collateral (Treasury portfolio) Pay cash penalty to lender
Property Status After Free and clear (no lien) Free and clear (no lien)
Loan Status Remains outstanding (successor borrower pays down) Immediately paid off
Cost Driver Treasury rates vs. loan coupon Interest rate environment vs. loan rate
Cost If Rates Rise Significantly cheaper (cheaper Treasuries) Much cheaper (lower penalty)
Cost If Rates Fall Much more expensive (pricey Treasuries) Significantly more expensive (high penalty)
Feasibility Only available if loan language permits Standard feature in fixed-rate CMBS/agency
Transaction Timeline 3–6 weeks (more complex) 1–2 weeks (simpler)
Professional Fees $50,000–$75,000 (legal, trustees, accounting) $5,000–$15,000 (minimal legal work)
Who Bears Risk? Borrower (Treasury pricing risk) Lender (indifferent to outcome)

When to Choose Defeasance vs Yield Maintenance

Choose Defeasance When:

  • Interest rates have risen since origination. Treasuries are now yielding more, making a matching portfolio cheaper.
  • You want the cleanest exit: The property becomes unencumbered; no lien, no successor borrower liability.
  • You expect the loan to allow defeasance. Most CMBS and agency loans permit it; non-agency / portfolio loans often don't.
  • Treasury yields are favorable relative to the loan coupon (rates above the loan rate at origination).
  • You're preparing for an immediate sale and want to market a property free and clear.

Choose Yield Maintenance When:

  • Interest rates have risen significantly. The penalty may be negligible or even zero if rates are much higher than the loan rate.
  • Defeasance is not permitted by the loan document (common in bridge loans and some portfolio loans).
  • You need speed: Yield maintenance closes in 1–2 weeks vs. 3–6 weeks for defeasance.
  • You want simplicity: No successor borrower entity, no Treasury portfolio management, no ongoing monitoring.
  • You're refinancing into a new loan. The new loan will encumber the property anyway, so the clean title from defeasance has no value.

What Drives Defeasance and Yield Maintenance Costs?

1. Interest Rate Environment

This is the dominant cost factor for both methods:

  • Defeasance: If Treasury rates are lower than the loan coupon, you must purchase premium-priced Treasuries to match the loan's cash flows. If rates are higher, you need fewer/cheaper Treasuries.
  • Yield Maintenance: If rates have risen above the loan coupon, the penalty shrinks. If rates have fallen below the loan coupon, the penalty is steep.

2. Remaining Loan Term

Longer remaining terms = larger cumulative interest savings = higher penalties:

  • Defeasance: You must purchase Treasuries across a longer maturity spectrum, increasing complexity and portfolio cost.
  • Yield Maintenance: More years of foregone interest = higher present value of interest rate differential = higher penalty.

3. Loan Balance and Coupon Rate

Larger loans and higher loan rates = higher costs:

  • Defeasance: Portfolio cost scales directly with remaining balance.
  • Yield Maintenance: Penalty scales with remaining balance and the coupon-to-Treasury spread.

4. Treasury Curve Shape

Yield curve slope affects the cost of matching long-dated loan cash flows:

  • Steep curve: If long-term Treasuries yield much more than short-term rates, the premium cost to match long-dated payments increases.
  • Flat/inverted curve: Less premium cost, as long-term yields are close to short-term rates.

5. Transaction Fees and Timing

Both methods include professional fees:

  • Defeasance: $50,000–$75,000 for legal counsel, trustee, accounting, and intermediaries.
  • Yield Maintenance: $5,000–$15,000 for basic legal review and lender coordination.

Real-World Cost Scenarios

Let's compare defeasance and yield maintenance costs under different interest rate scenarios:

Scenario A: Rates Have Risen (Favorable for Both)

Loan Details: $15M balance | 4.0% coupon | 7 years remaining

Treasury environment: 10-year Treasury now at 5.5% (vs. 3.5% at origination)

Defeasance Cost:

~$180,000–$220,000 (because you need fewer/cheaper Treasuries to match payments) + $60,000 fees = ~$240,000–$280,000 total

Yield Maintenance Cost:

PV of (4.0% – 5.5%) = essentially zero or even a small rebate = ~$5,000 (legal fees only)

Winner: Yield Maintenance (saves ~$235,000–$275,000)

Scenario B: Rates Have Fallen Significantly (Challenging for Both)

Loan Details: $15M balance | 4.0% coupon | 7 years remaining

Treasury environment: 10-year Treasury now at 2.5% (vs. 3.5% at origination)

Defeasance Cost:

~$750,000–$900,000 (because Treasuries must be purchased at a premium to generate 4.0% equivalent yields) + $60,000 fees = ~$810,000–$960,000 total

Yield Maintenance Cost:

PV of (4.0% – 2.5%) × $15M over 7 years = ~$1,200,000–$1,400,000 (lender keeps all interest savings)

Winner: Defeasance (saves ~$240,000–$590,000)

Scenario C: Rates Roughly Flat (Minimal Rate Risk)

Loan Details: $15M balance | 4.0% coupon | 7 years remaining

Treasury environment: 10-year Treasury now at 4.0% (same as origination)

Defeasance Cost:

~$420,000–$480,000 (baseline cost to match Treasury yields) + $60,000 fees = ~$480,000–$540,000 total

Yield Maintenance Cost:

PV of (4.0% – 4.0%) = ~$5,000 (legal fees only)

Winner: Yield Maintenance (saves ~$475,000–$535,000)

Takeaway: When rates have risen substantially above the loan coupon, yield maintenance is almost always cheaper. When rates have fallen, defeasance becomes more attractive (though both are expensive). Use a defeasance calculator to model both scenarios with your actual loan parameters and current Treasury rates.

The Defeasance Process: Step by Step

Unlike yield maintenance (which is straightforward: pay the lender and be done), defeasance involves multiple parties and a structured closing. Here's what to expect:

Step 1: Loan Document Review (Days 1–5)

Your legal counsel reviews the loan promissory note and deed of trust to confirm: (a) defeasance is permitted, (b) the specific defeasance mechanics required, (c) any restrictions on Treasury securities, and (d) successor borrower entity requirements.

Step 2: Defeasance Analysis (Days 1–10)

Using the CRELYTIC Defeasance Calculator or similar tool, model the cost. Input: remaining loan balance, coupon rate, remaining term, payment dates, and current Treasury yields. Output: Treasury portfolio cost, total transaction cost (including fees), and comparison to yield maintenance.

Step 3: Successor Borrower Entity Setup (Days 5–15)

Create a new legal entity (typically an LLC or trust) that will become the successor borrower. This entity will be party to the defeasance agreement and will hold the Treasury securities. The lender must consent to the successor borrower.

Step 4: Treasury Portfolio Construction (Days 10–20)

Your defeasance intermediary (often an investment bank or specialized consultant) prices Treasuries and constructs the portfolio. They calculate the exact quantity and maturity of each Treasury needed such that the coupons and principal payments align with each scheduled debt service date on the loan. This is a precise, technical process.

Step 5: Defeasance Agreement Preparation (Days 15–25)

Legal counsel drafts the defeasance agreement, which specifies: the Treasury portfolio, the successor borrower, the trustee (who will hold Treasuries), release of the original property, and confirmation that the successor borrower will service the loan via Treasury redemptions.

Step 6: Lender Approval and Sign-Off (Days 20–30)

The lender (or special servicer, if it's a CMBS) reviews and approves the defeasance agreement, Treasury portfolio, and successor borrower. The lender must confirm that the portfolio meets all requirements and that the successor borrower is acceptable. This step can introduce delays if the lender demands changes.

Step 7: Closing and Funding (Days 30–42)

At closing: (a) you wire the full defeasance cost (Treasury portfolio + fees) to the trustee's escrow account, (b) Treasuries are purchased immediately in real-time, (c) the defeasance agreement is executed and recorded against the property, (d) the original borrower is released from liability, and (e) a loan release/subordination is recorded, freeing the property from the lien.

Step 8: Post-Closing (Ongoing)

The trustee holds Treasuries in perpetuity, redeeming coupons and principal on each scheduled payment date. The successor borrower receives these cash flows and remits them to the lender (or they flow through automatically). You, as the original borrower, have no further obligations. The property is free and clear.

Timeline: Total process typically takes 3–6 weeks from initiation to final closing, depending on lender responsiveness and complexity of the loan structure.

Frequently Asked Questions

Can I defease any commercial mortgage?

No. Defeasance must be explicitly permitted in the loan document. Most CMBS (conduit) loans and agency loans (Fannie Mae, Freddie Mac, HUD) allow defeasance. However, many portfolio loans, bridge loans, and specialized loans (mezzanine, preferred equity) do not. Always check the loan documents or contact the lender first. If defeasance isn't permitted, yield maintenance (or a prepayment lock-out period) is typically the only option.

What if I defease but Treasury rates change before closing?

Treasury rates are volatile and can shift between defeasance initiation and closing. Most defeasance agreements lock in the Treasury yield curve at a specific date (often the defeasance closing date or 1–2 business days prior). If rates move significantly before you close, the cost of the Treasury portfolio changes. You have a few options: (a) accept the new cost, (b) delay closing to wait for more favorable rates, or (c) switch to yield maintenance. Always build a small cushion in your cost estimate to account for rate volatility during the 3–6 week closing process.

What happens to the successor borrower after defeasance?

The successor borrower entity (typically a special-purpose LLC or trust) remains the formal obligor under the loan. However, it has no active management: it simply holds Treasuries in a trust account, and those Treasuries generate cash flows that automatically pay the debt service to the lender (or to a trustee who remits to the lender). From your perspective as the original borrower, you are released of all liability. The successor borrower is passive and requires no ongoing work.

Can I defease and then refinance the property?

Yes, after defeasance the property is free and clear, so you can refinance with a new loan. However, you're paying defeasance costs upfront and then incurring new loan origination costs. If you're planning to refinance anyway, yield maintenance (or choosing not to prepay and riding out the existing loan) may be more economical. Defeasance is most valuable when you want the property free and clear for sale or long-term hold without encumbrance.

Is there a lockout period before I can defease or use yield maintenance?

Often, yes. Many loans have a lockout period (typically 3–5 years) during which prepayment is prohibited entirely. After the lockout expires, you can usually choose between defeasance and yield maintenance (if the loan permits defeasance) or yield maintenance only (if defeasance isn't allowed). Some loans also have a "yield maintenance only" period between lockout and end of term. Check your loan documents for the exact prepayment schedule.

How does the Treasury curve shape affect defeasance costs?

Treasury curve shape matters significantly. A steep curve (short-term Treasuries yielding much less than long-term) increases defeasance costs because matching long-dated loan payments requires purchasing longer-dated Treasuries at premium prices. A flat curve reduces this premium. In an inverted curve environment, defeasance can be cheaper because you may find attractive yields at shorter maturities. Always examine the full Treasury curve when analyzing defeasance cost.

Can I defease a Fannie Mae or Freddie Mac loan?

Yes, most Fannie Mae and Freddie Mac loans explicitly permit defeasance. However, the mechanics differ slightly from CMBS defeasance. Agency lenders typically provide detailed defeasance guidelines and approved defeasance counsel lists. The process is similar: construct a Treasury portfolio, set up a successor borrower, and the property is released. Costs are comparable to CMBS defeasance. Always confirm permissibility with your loan servicer before proceeding.

How long does yield maintenance take to close?

Yield maintenance closings are much faster than defeasance—typically 1–2 weeks from initiation to payoff. The process is simple: (a) contact the lender for a payoff quote (which includes the yield maintenance penalty), (b) wire funds, (c) the loan is paid off and released. Minimal documentation is required. If you need to close quickly (e.g., for a property sale), yield maintenance is the faster path—assuming it's permitted and economically competitive.

What if Treasury rates spike right before my defeasance closing?

This is a real risk. If Treasury rates jump (narrowing the spread between your loan coupon and Treasury yields), the defeasance cost drops dramatically. Conversely, if rates fall (widening the spread), the cost increases. Most defeasance agreements allow a small rate tolerance or require you to accept the rates prevailing at closing. Some borrowers include a rate "lock" in the defeasance contract (the intermediary commits to a specific portfolio cost for a limited period, typically 1–3 days). If rates move beyond your tolerance, you can renegotiate or pivot to yield maintenance.

Can I compare defeasance and yield maintenance costs myself?

You can estimate, but it's complex. Yield maintenance is easier to estimate (PV of rate differential over remaining term). Defeasance requires detailed Treasury yield curve modeling and portfolio construction, which is best done by a specialist. Use the CRELYTIC Defeasance Calculator to quickly model both scenarios with your loan parameters and current Treasury yields. This gives you a reliable comparison and helps you decide which path to pursue before engaging legal counsel.

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