Pre-Qual vs. Pre-Approval vs. Underwritten Approval

A pre-qualification is usually an estimate based on what you tell a lender. A pre-approval usually adds a credit check and some document review, but how deep it goes depends on the lender. An underwritten approval, often called a TBD approval because the property is "to be determined," means an underwriter has already reviewed your income, assets and credit before you choose a home. None of them is a final commitment to lend, but they are very different levels of certainty.

If your last pre-approval fell apart, the difference between these three is probably why.

The three steps at a glance

That table describes how the terms are commonly used. It isn't a legal definition, because there isn't one.

Why the labels can't be trusted on their own

The CFPB says plainly that lenders use "prequalification" and "preapproval" differently, and that the words a lender uses don't tell you much about its process. Some lenders issue a pre-qualification letter based only on unverified information. Others won't issue anything until documents are reviewed. The CFPB also notes that neither kind of letter is a loan offer.

So instead of asking "am I pre-approved?", ask "what exactly was checked, and by whom?"

Pre-qualification: a quick estimate

A pre-qualification is a conversation with numbers attached. You tell the lender what you earn, what you owe and what you have saved, and it estimates what you might qualify for. Some lenders pull credit at this stage and some don't.

It's useful for setting a budget early. It's weak when you're making an offer, because nobody has confirmed the facts it's built on.

Pre-approval: the step that varies most

A pre-approval usually includes a credit report and at least some documents: pay stubs, W-2s, bank statements, sometimes tax returns. Many lenders also run the file through an automated underwriting system, such as Fannie Mae's Desktop Underwriter or Freddie Mac's Loan Product Advisor, and issue the letter based on that finding.

Here's the catch. An automated finding is only as good as the data typed into it. If income was entered as a monthly figure that a human underwriter would calculate differently, or a debt was left off, the finding can change when the real underwriting happens. That's one way a "pre-approved" file ends up "denied." We break down the others in why loans get denied in underwriting after pre-approval.

One legal note: under Regulation B's official commentary, a pre-approval request reviewed under a program that issues written commitments counts as a credit application. If you're turned down at that stage, you're generally entitled to a notice with the specific reasons, or with instructions for requesting them.

Underwritten (TBD) approval: the strongest pre-closing position

An underwritten approval moves the hardest part of the process to the front. An underwriter reviews your credit, income documents, assets and the loan program before you have a property under contract. The result is a conditional approval with a short list of remaining items, most of them tied to the home you eventually choose:

• The signed purchase contract
• An appraisal that supports the value
• Title work and homeowners insurance
• Condo project review, if it's a condo
• Updated pay stubs or statements if time passes

Cornerstone First Mortgage offers this kind of underwritten pre-approval, with most loans underwritten in-house. For complex files, the scenario desk can structure the loan before it's submitted, so you know the answer before you're tied to a contract.

What can still change after an underwritten approval

An underwritten approval is a stronger position, not a final one. It can still change if:

• Your income, job or debts change before closing
• The appraisal comes in low or the condo project doesn't pass review
• A document expires and the updated version tells a different story
• Something in title or insurance becomes an issue

The fix is simple to say and hard to do: keep your finances steady from approval to closing, and tell your loan officer before you change anything.

Which one do you actually need?

• You're early and curious: a pre-qualification is fine for setting a budget.
• You have straightforward W-2 income and clean credit: a pre-approval with documents actually reviewed is often enough, as long as you know what was checked.
• Your file has any complexity: self-employed or 1099 income, a recent job change, rental income, an ITIN, a past bankruptcy or foreclosure, a condo, or a previous denial. Get an underwritten approval, or at least have the scenario structured, before you write offers.
• You're not sure which loan type fits: see every option on our loan options page.
• You were already denied once: start with the reason. Our 48-hour guide after a denial covers what to ask for, and the denial reasons index breaks down each common one.

If you're a real estate agent, the same questions help you judge a buyer's letter before you write the offer. More on that in our page for agents.

Questions to ask about any letter

1. Did someone review my documents, or only my credit?
2. Was the file run through automated underwriting, and what did it say?
3. Has an underwriter looked at it?
4. What conditions are still open?
5. Does the lender have its own rules on top of the guideline (a lender overlay) that could still apply?
6. When does the letter expire, and what will need updating?

Clear answers to those six questions tell you more than the title at the top of the letter.

Frequently asked questions

Is a pre-approval a commitment to lend?

No. A pre-approval says a lender is generally willing to lend under certain assumptions. The CFPB notes that it isn't a loan offer. Final approval depends on full underwriting, the property, and your finances staying the same through closing.

Does getting pre-qualified hurt my credit?

It depends on whether the lender pulls your credit, and how. Ask before you start. If it's a full mortgage credit check, the CFPB says multiple mortgage credit checks within a 45-day window count as a single inquiry.

How long does a pre-approval last?

It varies by lender. Credit reports and income documents age, so most letters have an expiration date and need updated documents to be renewed. Ask your loan officer what the date is and what will need refreshing.

Is an underwritten approval worth the extra effort?

For a complex file, usually yes, because the hard questions get answered before you're under contract. It can also give a seller and listing agent more reason to trust your letter, since more of the file has been checked.

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Want to know what's really behind your letter? Take the free Rescue Check. Tanner will review your situation and tell you plainly whether an underwritten approval makes sense, or what's standing in the way.

Tanner Cook is a licensed mortgage loan originator (NMLS #2090424) with Cornerstone First Mortgage, LLC (NMLS #173855). This article is general education, not legal, tax or financial advice, and not a commitment to lend. All loans are subject to underwriting approval, verification of income, assets and property, and an ability-to-repay determination where it applies. Not every applicant or property will qualify. Programs and guidelines change without notice. Equal Housing Opportunity Lender.