How to evaluate a buyer's financing, before accepting their offer

When a buyer's offer comes in, the financing is one of the components determining whether the deal will actually close. A preapproval letter is the basic signal of buyer credibility, but preapprovals vary widely in their depth and reliability. Sellers who can read the financing details (and tell the difference between strong and weak preapprovals) tend to make better choices about which offers to accept.

This matters because financing failures account for a meaningful share of deals that fall through. The data on this varies, but a rough estimate is that 5–10% of pending residential sales fail to close, with financing issues being one of the top causes alongside inspection-related terminations. The seller's losses when a deal collapses are real: lost time, days-on-market damage to the listing, and sometimes a market that has moved.

The preapproval spectrum

Not all preapproval letters are equal. The terminology has evolved over time, and it varies by lender. Roughly speaking, there are four levels of buyer-financing readiness, each producing different signals.

Prequalification is the lightest. It's typically based on a phone or online conversation where the buyer self-reports income, debts, and credit. The lender hasn't pulled credit, hasn't verified anything, and the resulting "you may qualify for up to $X" letter has very limited weight. In competitive markets, a prequalification letter alone often isn't taken seriously by listing agents.2

Preapproval is the standard tier. The lender has pulled credit, reviewed pay stubs and bank statements, and issued a conditional approval based on the documentation. Most preapproval letters state a maximum loan amount and have an expiration date (typically 60–120 days). This is what most retail buyers carry into offers.1

Underwritten preapproval (sometimes called TBD approval, fully underwritten preapproval, or upfront underwriting) is meaningfully stronger. The lender has actually run the file through underwriting before there's a property identified, leaving only property-specific items (appraisal, title) to be addressed once the buyer is under contract. Some lenders offer this as a competitive product; others don't have it as a formal product but will do equivalent work for stronger borrowers. An underwritten preapproval letter is roughly 90% of the way to clear-to-close.

Cash offers eliminate financing entirely. The buyer doesn't need a lender, so there's no financing risk. Cash offers typically come with proof-of-funds documentation (recent bank or brokerage statements showing the buyer has the cash). Cash offers are common in luxury markets and increasingly common in mid-market segments.

The trend in tight markets has been toward stronger preapproval products, because buyers with weaker preapprovals are losing competitive offers to buyers with stronger ones.

What to look for in a preapproval letter

Reading a preapproval letter carefully reveals a lot. Useful signals:

The lender. A known direct lender (national bank, large mortgage bank, well-regarded credit union) tends to produce more reliable preapprovals than an obscure or online-only lender. The CFPB maintains complaint data on lenders, and listing agents often have local-market reputation knowledge.

The phrasing. "Preapproval" is stronger than "prequalification." "Fully underwritten" or "TBD approval" is stronger than basic preapproval. Vague phrasing or letters that don't explicitly state the level of review are weaker signals.

The conditions. Most preapproval letters list outstanding conditions (verification of employment, satisfactory appraisal, satisfactory title work). Letters with shorter and more property-specific condition lists are stronger.

The loan type and amount. Conventional loans tend to be the most flexible. FHA and VA loans are absolutely fine but have additional property requirements (FHA in particular has appraisal standards that occasionally cause issues with older homes). The loan amount should match or exceed the purchase price minus the down payment.

The expiration. A preapproval letter from a few months ago is less reliable than one from the last week or two; the buyer's financial situation may have shifted. Listing agents sometimes ask for an updated letter as part of offer evaluation.

Down payment and reserves

Beyond the preapproval, the buyer's down payment percentage and cash reserves are signals of overall financial strength. A buyer with 25% down and six months of reserves is materially less likely to fall apart in underwriting than a buyer with 5% down and minimal reserves.

The down payment amount is usually visible in the offer itself. The reserves are sometimes harder to confirm without asking, but the buyer's agent will often communicate the buyer's overall position to the listing agent informally.

A higher down payment generally correlates with: stronger credit profile (since the buyer has saved more), lower DTI (since the loan is smaller), no PMI or smaller PMI, and more underwriting flexibility (since the LTV is lower). Each of these makes the underwriting process more likely to clear cleanly.

What the loan officer can confirm

Sellers and their agents sometimes call the buyer's loan officer directly to discuss the file at a high level. This isn't always done, and some lenders are more responsive than others, but a willing-to-talk loan officer who can describe the file's strength is a strong signal.3 A loan officer who is evasive, hard to reach, or unable to articulate the file's status is a weaker signal.

This is sometimes formalized, some listing agents request a verbal verification call as part of offer acceptance. The buyer's loan officer either does it or doesn't, and the willingness itself is information.

Specific risk categories worth flagging

A few specific situations that affect financing risk:

FHA on older homes. FHA appraisals have specific property-condition standards (chipped paint, peeling siding, missing handrails, certain plumbing or electrical issues) that conventional appraisals don't enforce. Older homes sometimes fail FHA appraisals, requiring the seller to make repairs or the buyer to switch programs. Sellers with older homes facing FHA buyers should be prepared for this.

High-DTI buyers. Buyers near the top of their DTI capacity have less margin for underwriting surprises. A small change in income, a new debt, or even a higher-than-expected property tax estimate can push them out of qualification.

Self-employed buyers. Self-employed income requires more documentation and more scrutiny in underwriting (two years of tax returns, profit-and-loss statements, sometimes additional verification). Strong self-employed buyers with consistent income close fine; those with variable or recently-changed income face higher risk.

Buyers with concurrent transactions. A buyer purchasing the home while selling their existing home (especially without a sold-contingency removed) has more moving parts. The risk profile depends on how far along the buyer's sale is.

A reasonable frame

A preapproval letter is the floor, not the ceiling. The seller's goal in evaluating financing is to estimate the actual likelihood the deal will close, which depends on the lender's quality, the underwriting depth, the buyer's down payment and reserves, and the specific characteristics of the financing (loan type, DTI, employment situation). A few minutes of careful reading of the preapproval letter, plus an informational conversation with the buyer's loan officer when warranted, often surfaces signals that affect which offer is the right one to accept. This is one of the under-appreciated ways listing-agent experience earns its compensation.