The Quick Read: A large deposit is explained with three things that match each other: a short written letter saying where the money came from, the document that proves that event, and the exact statement line the letter points to, so the underwriter can trace the money and either count it or set it aside. An unsourced deposit is usually left out of your usable assets instead of triggering an automatic denial. That matters because an asset-based loan is qualified on those assets.
- Sourcing and seasoning are two different tests. One asks where the money came from. The other asks how long it has sat there.
- The paper must match the story line for line. A vague letter hurts more than a short one.
- Cash deposits and borrowed money are the hardest cases. Sales, inheritances, settlements and brokerage liquidations are routine when documented.
- If you can avoid moving money, avoid it. A balance that never moved never needs a letter.
Which Path Are You On?
Your path decides what a large deposit can cost you. Asset-based mortgages on the platforms Lendmire places files with come in two forms, and a borrower is qualified on one at a time.
The asset qualifier path covers the whole loan with eligible assets. No employment or income is documented. After the credit percentages are applied, your assets must equal or exceed the entire loan amount. It reaches up to 80% loan-to-value on a purchase and 75% on a refinance of a principal residence or second home, through select programs and subject to underwriting.
The asset depletion path turns assets into income. The lender takes your usable assets and divides them by 60 months. The result is a monthly qualifying income that must carry the housing payment and your other debts. On a principal residence or second home, this path reaches up to 80% on a purchase and 60% on a cash-out refinance. On an investment property it reaches up to 65% on a purchase and 60% on a cash-out refinance.
Here is why this matters for deposits. A deposit that gets excluded shrinks the pile. On the qualifier path, a smaller pile can leave you short of the loan amount. On the depletion path, a smaller pile means a smaller monthly income. In both cases the lender is checking assets that you documented. “No income documentation” never means “no documentation.”
How Underwriting Treats a Large Deposit, Step by Step
The process is a paper trail exercise, and it follows the same sequence on most files across the lenders in the network.
1. Statements arrive. On the qualifier path, the lender wants two months of statements for each account you count. On the depletion path, statements must be at least 120 days old at application, plus one dated within 45 days.
2. The underwriter scans for deposits that break the pattern. Payroll, regular rent and recurring transfers rarely draw questions. A single lump sum that looks nothing like the account’s history does.
3. You get a request. It is a document request, not a verdict. It asks for a letter and supporting proof.
4. The underwriter compares the letter, the proof and the statement line. Each must name the same amount, the same date and the same source.
5. A decision follows. The deposit is sourced and counts. Or it is unsourced and is left out of your usable assets. Or it looks like borrowed money, which is the real problem case.
6. The math is rerun without anything excluded. If your remaining verified assets still carry the file, it proceeds. If they do not, the loan amount, the path or the structure has to change.
Most programs do not publish a single dollar line that defines “large.” Each lender sets its own trigger, and the strictest overlays flag more activity than the lenient ones. That is why a deposit that sailed through one file can draw a question on another.
What Counts as Large, and Who Decides?
Nobody sets one national number. The federal consumer regulator says large deposits are common when buyers shift money between accounts. It also says lenders are generally required to verify the source of funds and that requirements vary by lender, as the CFPB’s borrower guidance on lender document requests explains.
For contrast, conventional loans sold to Fannie Mae use a formula tied to income. Fannie Mae’s Selling Guide topic on depository accounts treats a single deposit above 50% of monthly qualifying income as large. That test does not carry over here. An asset qualifier file documents no income, so there is nothing to measure against. On the depletion path, the income is derived from the assets themselves. The same logic applies to business-purpose rental loans, which are designed for non-owner-occupied investment properties and reviewed differently from a standard owner-occupied mortgage. Deposits are an asset test there too. Lendmire’s complete DSCR loans guide covers that side.
In practice, think of “large” as anything that stands out against your own account’s normal activity. A $5,000 transfer in a household account that routinely moves a comparable amount each month is quiet. The same transfer in an account that usually holds still is loud.
Sourcing Versus Seasoning: Two Different Tests
Most borrowers blur these, and the blur causes trouble. They answer different questions.
| Test | Question it answers | What fixes it |
|---|---|---|
| Sourcing | Where did the money come from? | Letter plus matching proof |
| Seasoning | How long has it been in the account? | Time, or an excused source |
Seasoning on the qualifier path is 60 days, with two months of statements per account. Your statements show whether the money has been there. On the depletion path, the statements must be old enough that the balance has history. Funds from the sale of a business, an inheritance or a legal settlement are excused from that depletion-path seasoning. They still need sourcing. The proof just replaces the waiting.
A well-documented deposit can still be ineligible. Sourced does not mean eligible. On the depletion path, custodial accounts, deferred compensation, escrow accounts, foreign funds, cash on hand, stock options and non-vested restricted stock units do not count. Cryptocurrency, precious metals and collectibles are not published as eligible on either path. The documented route is to convert them to cash in a regulated account and let the lender review the source. Plan that conversion early, because the proceeds arrive as a large deposit.
Source-by-Source: What Proof to Bring
Match the paper to the event. These are the common ones.
| Deposit source | Proof to provide | Common trap |
|---|---|---|
| Sale of a property | Settlement or closing statement | Statement shows net, not gross |
| Brokerage liquidation | Brokerage confirmation or statement | Missing the account that was sold |
| Retirement account withdrawal | Distribution statement from the custodian | Amount differs after withholding |
| Inheritance | Estate or trust distribution papers | Letter with no paper behind it |
| Sale of a business | Sale agreement and closing statement | Proceeds paid to a business account |
| Legal settlement | Settlement agreement and payment record | Partial payments arriving separately |
Transfers between your own accounts need both sides shown. Provide the statement from the sending account and the receiving account, with the amounts and dates lined up. This is also the cleanest scenario to prevent. If the money is already in an account that counts, leave it there.
Gifts are not a clean category here. Gift treatment is not published for either path, and the lender sets it. If a relative plans to help, ask before any money moves. And borrowed money, including a short-term loan wired in and repaid later, is the classic red flag. It makes the asset look like a liability.
How to Write the Letter That Explains a Large Deposit
Keep the letter to one page. A letter is not a story. It is an index to your proof.
Every good letter has four parts:
- What: the amount and the date of the deposit.
- Where from: the exact source, named plainly.
- Why it moved: the reason the money ended up in this account.
- Proof attached: a list of the documents that back it.
A short sample, written for an asset borrower, reads like this: “On the date shown, a deposit for the amount shown appeared in my savings account. It is the net proceeds from selling my brokerage holdings in the account named on the attached confirmation. I moved the proceeds to savings to consolidate my accounts. The brokerage confirmation and both account statements are attached.”.
Do’s and don’ts keep it honest:
- Do name the statement line the letter refers to.
- Do attach the proof the same day you send the letter.
- Don’t round the amount or guess at the date. A near match creates a new question.
- Don’t explain a source you cannot document. If the paper does not exist, say so plainly and let the underwriter decide.
A false or vague explanation does more damage than an honest gap. An honest gap means the deposit gets excluded. A misleading letter puts the whole file in doubt.
A Worked Example: Statement Line to Underwriter Outcome
All figures here are illustrative. The lender’s own calculation governs, and everything is subject to underwriting.
Start with the qualifier path. Say the loan is $800,000. Your verified assets are $330,000 in brokerage accounts, counted at 100%, and $300,000 in a 401(k) while you are under 59½, counted at 90% for $270,000. You also hold $200,000 in savings, counted at 100%. That totals $800,000 of usable assets, so the file is reviewed on assets alone.
Now suppose the $200,000 in savings landed three weeks ago from selling a rental property. If you document it with the settlement statement and a letter, it counts and the math holds. If you cannot source it, the underwriter excludes it. Usable assets drop to $600,000 against an $800,000 loan. The file no longer works as structured. The fix is a smaller loan, a documented source, or more seasoning.
On the depletion path the same event bites differently. Take $1,500,000 in securities counted at 80%, which is $1,200,000, plus $300,000 in cash at 100%. Usable assets are $1,500,000. Divide by 60 months and you get $25,000 of monthly qualifying income. If the $300,000 in cash was an unsourced deposit, usable assets fall to $1,200,000. Divided by 60, the qualifying income drops noticeably. That smaller income now has to carry the housing payment and other debts through the debt-to-income test. Depletion-path files also have minimum asset floors, so a large exclusion can move you across a line, not just down a slope.
Across the lenders in the network, this is the pattern: a deposit rarely kills a file outright. It changes the arithmetic, and the arithmetic decides whether the structure still works. Lendmire’s piece How to Qualify for a Mortgage With Large but Irregular Deposits goes deeper on messy account histories.
Where the General Rule Breaks
Cash deposits. Cash leaves no independent paper trail, so it is the hardest to document. Depositing cash shortly before applying is the pattern that causes the most grief.
The $10,000 bank report. Banks file a Currency Transaction Report for cash transactions above $10,000 in a single business day, a Bank Secrecy Act requirement FedLaws summarizes with the federal regulation citation. It is routine paperwork, not an accusation, and it is separate from mortgage underwriting. Breaking up deposits to avoid the report is the real legal problem. If you have cash to deposit, deposit it and document it.
Liquidity events. Selling a business, cashing out equity or closing a large investment position creates the biggest single deposits. These are explainable, and some are excused from depletion-path seasoning, but they need the heaviest paper.
Business accounts. If your assets sit in a business account, expect questions about ownership share and access. Only the portion that is yours is considered.
Retirement money. Moving funds out of a retirement account turns a statement balance into a deposit. Leaving it in place avoids the question altogether, and the account still counts at its percentage. If you do withdraw, tax treatment varies, so consult a qualified professional.
EIDL-funded accounts. Those proceeds are a liability, not an asset. An account funded with them needs sourcing and is typically excluded.
Cash-out proceeds. On the depletion path, cash-out proceeds never count as qualifying assets. Do not plan to recycle the loan’s own cash.
Timeline and Prevention Checklist
Before you apply:
- Pull the last several months of statements for every account you plan to count.
- Mark every deposit that does not look like your normal activity.
- Gather proof for each one now, while the paper is easy to find.
- Stop moving money between institutions unless you need to.
- Decide which path fits before you shuffle anything.
During underwriting:
- Answer requests with the letter and proof together.
- Do not make new deposits or transfers into counted accounts.
- Tell your broker about any new account activity before the lender spots it.
If the deposit already landed:
- Find the originating document first. Then write the letter.
- If part of the paper trail is missing, assemble what exists and say plainly what does not.
- Consider whether the file still works if that deposit is excluded. Knowing that number early gives you options.
Mistakes That Cost Borrowers Assets
- Treating a deposit as obvious because it is your own money. Transfers still show up as deposits.
- Sending a letter that does not match the proof by amount or date.
- Counting an asset class that is not eligible.
- Making a new deposit after the statements were pulled.
- Assuming a flag means denial, then withdrawing the application instead of answering the request.
- Forgetting that sourced and eligible are different words.
Key Terms Defined
Asset qualifier path: The path where eligible assets must cover the entire loan, with no income documented.
Asset depletion path: The path where usable assets are divided by 60 months into a monthly income that goes through the debt-to-income test.
Sourcing: Proving where a deposit came from with documents that match the statement line.
Seasoning: The time money has sat in an account, shown by statement history.
Letter of explanation: A one-page note that names the amount, source, reason and attached proof for a deposit.
Usable assets: The share of each balance that counts after the program’s credit percentages are applied.
Frequently Asked Questions
Will a large deposit get me denied?
Usually it leads to a document request, not a denial. The underwriter either counts the deposit, excludes it, or flags it as borrowed money. Exclusion is far more common than denial, though a smaller pile can make the original structure fail, subject to underwriting.
Do I need a letter for every deposit?
No. Ordinary payroll, regular rent and routine transfers typically pass without comment. You need a letter when the underwriter flags a deposit, and it is smart to send one with the proof for anything that stands out from your normal pattern.
Can I move money between my own accounts?
You can, but it creates a deposit that may need both sides documented. If an account already counts, leaving the money there avoids the question. If you must move it, keep the statements from both accounts and do it well before applying.
How long should funds sit in the account?
On the qualifier path, 60 days with two months of statements for each account. On the depletion path, statements at least 120 days old plus one within 45 days. Sale-of-business, inheritance and legal-settlement funds are excused from the depletion-path seasoning, though they still need sourcing.
What if I cannot find the paperwork?
Ask the originating institution for a duplicate: a settlement statement, brokerage confirmation or distribution record. If a piece truly does not exist, expect that deposit to be left out, and check whether the file still works without it.
Next Step
If you are qualifying on assets rather than income and want to see how the numbers work, Lendmire can help you compare asset-based mortgage options based on your statements, the property, credit profile, leverage, and your goals. Lendmire is a broker, so it places files through select lenders in its network, and consumer lending is licensed in 16 states. Reach the team at 828-256-2183 or through the quote request page. Every program figure here is a typical range, not an offer, and the lender’s own review governs.
The strongest deposit story is the one you could tell with no letter at all: balances that sat still, statements that show it, and a paper trail ready the day someone asks.
For current guidelines and terms, see Lendmire’s asset-based mortgage programs page.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage broker licensed for consumer lending in 16 states. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
Get Started
Ready to find the right loan for you?
In about 30 seconds you can review financing options available for your home or investment property. No commitment required.
Informational only. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
References
1. CFPB – Submit documents and answer requests from the lender
2. Fannie Mae Selling Guide B3-4.2-02 Depository Accounts
3. FedLaws – How Much Can You Deposit Before the IRS Is Notified
This article is part of Lendmire’s asset-based mortgage program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Asset Qualifier Mortgage vs Bank Statement Mortgage · How Lenders Count Assets Toward an Asset Depletion Mortgage · How an Asset Depletion Mortgage Works
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Compliance and disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage broker and is not a direct lender, depository institution, financial advisor, or tax professional. Content in this article is general market analysis and educational information — not financial, legal, or tax advice for any specific situation. Lendmire does not guarantee loan approval; every transaction is subject to underwriting by the funding lender. Mortgage pricing and loan program guidelines are subject to change at any time without notice and vary by borrower characteristics, property type, and state regulations. Lendmire complies with Equal Housing Opportunity. Licensure verification: NMLS Consumer Access.