When to Lock Your Rate on a DSCR Loan

A rate lock is a deadline, not a discount. It fixes your pricing for a set number of days and starts a clock your file has to beat. Lock too early on a property that is not ready, and you pay to extend it. Float too long on one that is ready, and you carry whatever the market does in the meantime.

Investors tend to treat the lock as a box to tick once and forget. On a DSCR file it is a scheduling decision, and it is worth making on purpose. Here is what a lock does, when the option opens, and what decides the length.

What does a rate lock actually do?

Locking fixes the pricing on your loan for a defined window. It does not approve the loan, it does not commit the property, and it does not stop underwriting from asking for more. It removes one variable — pricing — while every other variable stays live.

That distinction matters because the lock clock runs on calendar days, not on business days, and not on how fast anybody is working. An appraisal that takes two extra weeks spends two weeks of your lock.

When can you lock on a DSCR loan?

On most investor files the lock becomes available once there is a property address, an accepted contract and a submitted application. Before that there is nothing to price — pricing on a DSCR loan is driven by the property's numbers, and those are not knowable without a specific property.

This is one of the practical differences from an owner-occupied file. A primary-residence borrower can shop pricing on income and credit alone. On a DSCR loan, the property is the borrower, so the property has to exist first.

How long should the lock period be?

Size the lock to the slowest thing in the file, not to the fastest. Ask what could realistically take longest, and count backwards from there:

• Appraisal turn time in that market, including the rent schedule the appraiser completes alongside it
• Whether the property is tenant-occupied, which adds scheduling around access
• Entity paperwork, if you are taking title in an LLC that is not formed yet
• Insurance binding, which in some coastal and wildfire markets is now the long pole
• Title work, especially on a property that has changed hands recently or sits in an estate

A lock sized to an optimistic timeline is the most common reason investors pay extension fees. The extension is rarely large on its own, but it is money spent solving a problem that better arithmetic would have avoided.

What happens if the lock expires before you close?

Two things can happen, and which one you get depends on the market at that moment. Either you extend the existing lock for a fee, or the lock is renegotiated against current pricing. Extension terms are set at the front of the process, so ask what they are before you commit to a length, not after the clock has run down.

Ask two specific questions: what an extension costs per day or per block of days, and whether there is a cap on how many times a file can extend. Both answers are knowable up front and both change how you would size the original lock.

Does a lock protect you if the appraisal or rent schedule comes in low?

No, and this is the misunderstanding worth clearing up. A lock holds pricing. It does not hold the loan amount, the ratio, or the terms the file qualified for on the assumptions you started with.

If the appraised value or the appraiser's rent schedule lands below what the file was built on, the debt service coverage ratio moves with it. The loan may still work at a different loan-to-value or with more cash in. The lock does not insulate you from that, because the lock was never about the property's numbers.

When does floating make more sense?

Floating makes sense when the close date is genuinely uncertain and you would rather carry market risk than extension risk. A property with an unresolved inspection issue, a lease that has to be verified, or an entity that does not exist yet is a file where the timeline is not yours to control.

It also makes sense when the gap between lock periods is wide enough that you would be paying for time you have no realistic way to use. The decision is a comparison: the cost of the longer lock against the cost of extending the shorter one, weighted by how confident you actually are in the close date.

What should you have ready before you lock?

The lock is worth the most when the file behind it is already moving. Before you start the clock, have the purchase contract executed, the entity formed if you are closing in one, the insurance conversation started rather than planned, and a realistic appraisal turn time for that specific market.

We do the homework on the timeline before the clock starts, because a lock sized to the real file is worth more than a lock sized to the ideal one. If you want the lock question answered against a specific property rather than in the abstract, send us the address and the contract dates.