During loan underwriting — particularly for mortgages, but sometimes for other significant loans as well — an applicant may be asked to provide a "letter of explanation" (often abbreviated LOE). This is a short, written statement from the borrower addressing something in their financial file that the underwriter needs more context on before making a decision. Being asked for one isn't necessarily a red flag; it's a routine part of how underwriters resolve questions that documents alone can't answer.
Why underwriters request them
Underwriting is largely a process of verifying that an applicant's financial picture is consistent, explainable, and matches what's been disclosed on the application. When something in the file doesn't fit a standard pattern — an unusual deposit, a gap in employment, a recent credit inquiry, a prior late payment — an underwriter generally can't just guess at the reason. A letter of explanation gives the borrower a chance to provide context directly, often alongside supporting documentation, so the underwriter can evaluate the situation rather than treating it as unexplained risk.
Common situations that trigger a request
While every lender's underwriting process differs somewhat, letters of explanation are frequently requested for things like:
- Large or unusual deposits in bank statements that don't match regular income patterns — see how to gather bank statements for how lenders typically review these.
- Gaps in employment history, especially longer gaps or a recent change in job or income type.
- Recent hard inquiries on a credit report that suggest new credit may have been sought, which could affect debt levels — related to how hard inquiries affect your credit.
- Past derogatory credit items, such as a prior late payment, collection, or bankruptcy, particularly if it appears to be an isolated event rather than part of a broader pattern — see how long negative items stay on a credit report for how these items age over time.
- Multiple addresses or name variations appearing on a credit report.
- A recent change in income, such as a drop in self-employment earnings, which ties into the documentation discussed in how lenders verify income for self-employed borrowers.
- Large debt payoffs shortly before applying, where an underwriter may want to confirm the source of funds used.
What a letter of explanation typically includes
There's no single required format, but a letter of explanation is generally expected to be clear, factual, and specific. Typical elements include:
- A brief statement of what is being explained (referencing the specific item, date, or amount in question)
- A concise, factual explanation of what happened and why
- Any relevant context that shows the situation was temporary, resolved, or unlikely to recur
- Supporting documentation where applicable (for example, a pay stub confirming a deposit was a bonus, or a termination letter confirming an employment gap was due to a layoff)
- The borrower's signature and date
Lenders generally prefer letters that are direct and factual rather than lengthy or emotional — the goal is to give the underwriter enough information to document the file, not to persuade them of anything beyond the facts.
It's a normal part of underwriting, not a denial signal
Being asked for a letter of explanation doesn't necessarily mean an application is in trouble. Underwriters are generally required to document a complete and consistent file, and a letter is often simply the most efficient way to close a gap in that documentation. Many approved loans include one or more letters of explanation as a standard part of the file. That said, how the explanation is received does depend on the underlying situation — a well-explained, isolated issue is generally viewed differently than a pattern of similar issues.
Preparing in advance
Because underwriters often flag these items only after reviewing full documentation, letters of explanation frequently come up mid-process rather than being anticipated ahead of time. Still, borrowers who know they have something in their file that's likely to raise a question — a recent job change, a large one-time deposit, an old credit issue — can sometimes get ahead of it by preparing documentation early, alongside the broader set of documents needed to apply for a loan. This is particularly relevant for borrowers weighing how to get a loan with bad credit, since past credit issues are one of the more common triggers for this kind of request.
The general takeaway
A letter of explanation is simply a documented, factual account of something in a borrower's financial history that an underwriter needs clarified before completing their review. It's a routine underwriting tool used across many loan types, and providing a clear, well-supported explanation is generally the most effective way to keep an application moving forward once one is requested.