Rate Lock

Definition: A rate lock is a lender's binding commitment to hold a loan's interest rate, or its spread over an index, for a defined period before closing, protecting the borrower from market movement between application and funding. Locks range from short commitment-to-close windows to early rate locks executed at application, and they typically require a good-faith deposit that is refunded at closing and forfeited only if the borrower fails to close.

Rate Lock in Practice

A borrower early rate locks a $20,000,000 agency loan at application, posting a good-faith deposit of 2%, or $20,000,000 x 2% = $400,000, refundable at closing. If the benchmark rises 40 basis points during the 60 days to closing, the locked rate saves $20,000,000 x 0.40% = $80,000 of interest per year, roughly $80,000 x 10 = $800,000 of debt service across a 10-year term before compounding effects.

Rate Lock: What the Market Actually Requires

When the rate actually locks is one of the sharpest differences between capital sources, and it decides who carries market risk during the 45 to 90 days a loan takes to close. Life insurance companies are the standout: many will lock the rate at application for the entire processing period, sometimes with no deposit or a modest one, and several will write forward commitments that lock a permanent rate 6 to 12 months ahead for a construction takeout. That certainty is a genuine reason borrowers choose life company paper even at a similar coupon.

Agency lenders run formal early rate lock programs that let multifamily borrowers lock shortly after application, posting a good-faith deposit, commonly 1% to 2% of the loan, refundable at closing and forfeited on a failure to close. The standard alternative locks at commitment, leaving the borrower floating through underwriting. HUD-insured loans lock late in a long process. Banks generally float to closing or offer swap-based fixed rates that carry breakage costs if the loan dies. CMBS is the least borrower-friendly: the spread is set at securitization pricing within days of closing, so the borrower carries both index and spread risk through the entire process, and hedging that exposure with Treasury locks is possible but at the borrower's cost.

Execution points that matter: confirm whether the lock covers the all-in rate or only the spread over the index, since a spread-only lock leaves benchmark risk with you; size the lock period to a realistic closing timeline, because extensions cost money; and understand the breakage math before signing, as a hedged lock that fails to close can generate a bill well beyond the deposit. In a volatile rate market, the ability to lock early is frequently worth more than a small coupon difference between competing quotes.

Why It Matters for Your Loan

Between application and closing, a 40 basis point move on a $20,000,000 loan swings annual debt service by $80,000 and can break DSCR sizing entirely, cutting proceeds at the closing table. Knowing which lenders lock early, what deposits they require, and what breakage exposure a failed closing creates is part of choosing the capital source. Commercial Lending Solutions weighs rate-lock mechanics alongside pricing when routing a deal, especially for construction takeouts that need a forward commitment.

Rate Lock: FAQ

It varies by capital source. Life insurance companies often lock at application, the earliest in the market, and some offer forward locks 6 to 12 months out for construction takeouts. Agency lenders offer early rate lock programs shortly after application with a refundable deposit, or a standard lock at commitment. Banks usually float to closing or fix through a swap. CMBS sets the spread at securitization pricing days before closing, leaving the borrower exposed the longest. Ask every lender for its lock point before comparing coupons.
Agency early rate locks typically require a good-faith deposit of 1% to 2% of the loan amount, held in escrow and refunded at closing; it is forfeited only if the borrower fails to close. Life companies often lock with a modest deposit or none, relying on their application fee structure. Swap-based bank locks carry no deposit but expose the borrower to breakage costs if the loan dies after the hedge is placed, which can exceed what a deposit would have been. The deposit is the price of certainty, not a fee.


Put This Knowledge to Work

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