What Is Automated Underwriting? A Plain English Guide for NH Home Buyers
When you apply for a mortgage, someone — or something — has to decide whether you qualify. That “something” is called an automated underwriting system, or AUS. Think of it like a very sophisticated calculator that looks at your credit, income, debts, and assets all at once and gives your lender an instant answer about whether you’re likely to qualify for a loan.
It happens behind the scenes, usually within minutes, and most buyers never even know it occurred. But the result it produces — called a “finding” — has a huge impact on whether your loan moves forward and on what terms.
Most loan types require your lender to run your application through an automated underwriting system (AUS) — sometimes two. The two most common are Desktop Underwriter (DU), used by Fannie Mae, and Loan Product Advisor (LPA), used by Freddie Mac. Some lenders only have access to one of these systems, but at Bookend Lending we use both — which matters more than you might think. If your file doesn’t get an approval through one system, we can try the other. Many times when DU doesn’t accept a file, LPA will, and vice versa. That extra option can make a real difference for buyers whose situation isn’t perfectly straightforward.
The result the system produces is called a finding. For conventional loans, your file generally needs to receive an “Accept” finding to move forward. Government loan programs like FHA, VA, and USDA/RD have their own automated systems and tend to be more lenient — and in some cases, an Accept finding isn’t even required. We’ll cover all of that in detail below.
Want to Know More? Here’s the Deep Dive.
If you’re the type of person who likes to understand exactly how something works before you hand over your financial information — this section is for you. What follows is a more detailed look at how automated underwriting systems actually evaluate your file, what causes different outcomes, and what happens when the system doesn’t give your lender the answer they were hoping for. You don’t need to understand any of this to get a mortgage — but knowing it can make you a more confident and informed borrower.
How Desktop Underwriter (DU) and Loan Product Advisor (LPA) Work
Both DU and LPA are sophisticated risk assessment tools, but they aren’t operated by your lender — they’re owned and operated by the two major players in the secondary mortgage market. DU is owned by Fannie Mae and LPA is owned by Freddie Mac. When your lender runs your file, they are essentially asking Fannie Mae or Freddie Mac whether they would be willing to buy your loan after it closes.
That’s the key insight most buyers never hear: your lender doesn’t necessarily keep your mortgage. They often sell it to investors on the secondary market, and Fannie Mae and Freddie Mac are the biggest buyers. So when DU or LPA evaluates your file, it’s really those agencies deciding whether your loan meets their purchasing standards.
Both systems look at the same core factors — your credit score, credit history, debt-to-income ratio (DTI), loan-to-value ratio (LTV), assets, and the type of property you’re buying. But they weigh those factors differently, which is why the same file can get an Accept from one system and a Refer from the other.
Accept vs. Refer/Caution — What Do the Findings Mean?
When your file comes back from DU or LPA, the result falls into one of two basic categories: an Accept or a Refer/Caution.
An Accept means the automated system has determined your file meets the guidelines and your lender can move forward with approving your loan. For conventional loans — those sold to Fannie Mae or Freddie Mac — an Accept finding is essentially a requirement. Without it, the loan generally cannot be approved through normal channels.
A Refer/Caution on a conventional loan means the process stops. The loan cannot be approved. This isn’t a speed bump — it’s a wall. And in most cases, the issues that cause a Refer/Caution finding aren’t quick fixes. They typically involve credit history, debt levels, or other financial factors that take months or even years to resolve.
This is exactly why getting preapproved before you start house hunting is so important. Discovering a Refer/Caution finding after you’ve fallen in love with a home — or worse, after you’ve made an offer — is one of the most heartbreaking situations in the mortgage process. We’d much rather find it early, explain what needs to happen, and make a plan together. Learn more about the difference between prequalification and preapproval →
The Good News: Government Loans and Manual Underwriting
If your file receives a Refer/Caution finding and you’re pursuing a government-backed loan — FHA, USDA/RD, or VA — the story doesn’t end there. Unlike conventional loans, these programs allow for manual underwriting, meaning a human underwriter can review your complete file and approve your loan even when the automated system said no.
This is genuinely good news for buyers who have had credit challenges, gaps in employment, high debt ratios, or other factors that automated systems tend to penalize. Automated underwriting is fast and efficient, but it can’t read a full story the way a human can. A manual underwriter can consider compensating factors — things like a strong history of on-time rent payments, significant cash reserves, or a solid explanation for a past financial hardship.
That said, manual underwriting isn’t a free pass. It requires more documentation, more detailed explanation, and closer scrutiny of your entire financial picture. The process takes longer and the standards are tighter in some ways. But for the right borrower in the right situation, it can be the difference between getting a home and not getting one.
In the sections below we’ll look at how each government program handles automated and manual underwriting specifically.
FHA Loans and Automated Underwriting — The FHA TOTAL Scorecard
FHA loans are the most common government-backed mortgage program, and for good reason — they’re accessible, flexible, and designed specifically for buyers who may not qualify for conventional financing. FHA requires a minimum 3.5% down payment and is generally more forgiving of lower credit scores and higher debt-to-income ratios than conventional loans.
When your lender runs an FHA file through automated underwriting (AUS), the system used is called the FHA TOTAL Scorecard (Technology Open To Approved Lenders). TOTAL is accessed through DU or LPA rather than being a standalone system, so your lender still uses the same tools — but the guidelines being applied are FHA’s, not Fannie Mae’s or Freddie Mac’s.
A TOTAL Scorecard Accept finding means your file meets FHA’s automated guidelines and your lender can proceed. The documentation requirements are more straightforward and the process moves efficiently.
A Refer finding from TOTAL doesn’t mean your FHA loan is dead — but it does mean it moves to manual underwriting. Under manual underwriting, FHA requires:
- A more thorough review of your credit history, including explanations for any late payments or derogatory marks
- Verification of rent payment history in many cases
- Stricter debt-to-income ratio caps, although compensating factors can allow exceptions
- More detailed documentation of your income, assets, and employment
The important thing to understand is that FHA manual underwriting, while more demanding, has helped countless buyers who were turned away elsewhere get into homes. It exists specifically because FHA’s mission is to expand homeownership access — and a Refer finding is not the end of anyone’s story.
VA Loans and Automated Underwriting
VA loans are exclusively available to eligible veterans, active duty service members, and surviving spouses — and they are arguably the most powerful mortgage program available in the United States. No down payment required, no private mortgage insurance, and historically some of the most competitive interest rates available. If you’ve served and you qualify, this program is almost always worth exploring first.
When a VA loan file is run through automated underwriting, it goes through DU or LPA just like a conventional loan — but the guidelines being applied are VA’s. A VA Approve/Eligible finding means your file meets VA’s automated guidelines and your lender can move forward.
When a file comes back as a Refer the good news is the same as with FHA — VA also allows manual underwriting. In fact, VA has a long tradition of manual underwriting and their guidelines are well established for it. A human underwriter will review your complete financial picture, and VA is known for taking a holistic view of a veteran’s situation rather than relying solely on numbers.
A few things that make VA underwriting unique:
- VA does not set a minimum credit score requirement — though most lenders establish their own overlays
- VA uses a residual income calculation in addition to debt-to-income ratio — meaning they want to make sure you have enough money left over each month after all obligations are paid
- The residual income requirement actually makes VA one of the more thoughtful and borrower-protective underwriting standards of any loan program
For eligible borrowers, a Refer finding on a VA loan is absolutely not the end of anyone’s story.
USDA/RD Loans and Automated Underwriting — GUS
Rural Development loans — known in the industry as RD or USDA loans — are one of the best kept secrets in mortgage lending. Like VA, they require no down payment. Like FHA, they’re a government-backed program designed to expand homeownership access. And for the right buyer in the right location, they can be an extraordinary opportunity.
RD loans use their own dedicated automated underwriting system called GUS — the Guaranteed Underwriting System — which is accessed directly through the USDA’s online portal rather than through DU or LPA. GUS evaluates your credit, income, debt ratios, and the eligibility of the property itself.
A GUS Accept finding streamlines the approval process significantly. A Refer finding, just like FHA and VA, opens the door to manual underwriting rather than closing it entirely.
There are two important limitations that have made RD loans less common in New Hampshire in recent years:
Income limits. RD loans are designed for low-to-moderate income borrowers. The household income limits are set by county and family size, and as New Hampshire incomes have risen, more buyers find themselves just over the limit.
Property eligibility. RD loans are restricted to designated rural and some suburban areas. As NH property values have surged, many buyers find that the homes within eligible areas are simply out of reach at current prices — and the homes they can afford are often in areas that don’t qualify.
There was a time when RD loans were a go-to solution for NH buyers — and for the right buyer in a qualifying area at a qualifying income level, they absolutely still are. If you think you might qualify, it’s always worth a conversation. Not every lender knows this program inside and out — but some of us do.
Other Loan Types — Specialty Programs and Proprietary Underwriting
Not every mortgage fits neatly into the conventional or government-backed box — and that’s exactly where an independent broker like Bookend Lending becomes especially valuable. We have access to a wide range of specialty loan programs including Jumbo loans, Non-QM mortgages, DSCR loans, bank statement loans, 1099 loans, and P&L loans, among others.
So how do these loans get underwritten?
Non-QM and specialty loans are typically manually underwritten — meaning a human underwriter reviews your complete financial picture rather than running it through DU or LPA. This is actually one of their greatest strengths. Non-QM underwriting is designed to look at the bigger picture of your financial situation rather than forcing it through a standardized automated checklist. Self-employed? Multiple income streams? Strong assets but unconventional documentation? These are exactly the situations Non-QM manual underwriting was built for.
Some specialty lenders have developed their own proprietary automated underwriting systems for certain products — particularly DSCR loans, where the property’s rental income rather than your personal income drives the qualification. These systems are lender-specific and operate completely independently of Fannie Mae’s or Freddie Mac’s platforms.
Are There Loans That Skip Automated Underwriting Entirely?
Yes — and it’s more common than most buyers realize. Here are the main situations where automated underwriting either doesn’t apply or isn’t the primary decision-making tool:
Non-QM and bank statement loans — as noted above, these are primarily manually underwritten by design. The whole point is flexibility that automated systems can’t provide.
Portfolio loans — some lenders keep loans on their own books rather than selling them to Fannie Mae or Freddie Mac. Because they’re not selling to the secondary market, they’re not required to use DU or LPA and often underwrite these entirely in-house.
Hard money loans — short term, asset-based loans used primarily by investors. These are based almost entirely on the value of the property and are manually evaluated.
Jumbo loans — loans above the conforming loan limits often require manual underwriting or a combination of automated and manual review, since they fall outside standard agency guidelines.
The bottom line: automated underwriting is a powerful and efficient tool, but it is not the only path to mortgage approval. Part of what we do at Bookend Lending is match your specific situation to the right program and the right underwriting path — whether that’s DU, LPA, a government system, or a lender’s proprietary platform.
The Bottom Line on Automated Underwriting
Automated underwriting systems are powerful tools that make the mortgage process faster, more consistent, and more transparent — but they are just that: tools. They don’t tell the whole story of who you are as a borrower, and a Refer or Caution finding is never the final word on whether you can buy a home.
Understanding how these systems work gives you a real advantage as a buyer. You’ll know the right questions to ask, you’ll understand what your lender is telling you, and you won’t be caught off guard by a finding that could have been anticipated and addressed early in the process.
At Bookend Lending, we believe every buyer deserves a thorough, honest review of their situation before they start shopping for a home. Whether your file sails through automated underwriting on the first try or takes a more winding path to approval — we’ve seen it all, and we know how to navigate it.
Every homeowner’s journey has its own chapters. We’re here to help you write yours.
Ready to find out where you stand? Start with a quick prequalification — no credit pull required → or call Renee directly at 603-345-5644.