How a Contractor Documents a Large Deposit for a Bank Statement Loan

The Quick Read: Underwriters treat a big, irregular deposit as a question, and your job is to answer it with paper: the signed contract, the invoice or draw request, proof of who paid, and a short letter of explanation that ties them together, so the lender can decide whether the money counts as income, as an asset, or not at all.

• The threshold for “large” is set by each lender, not by a universal number.
• Proof depends on the deposit type: a progress draw needs different paper than a loan advance.
• A letter alone rarely settles it. The letter has to point to a source document.
• Money that passes through to subs and suppliers can be trimmed or excluded from income.
• Cleaning up the file before you apply costs little and can change the income figure the lender uses.

Two Meanings of “Large Deposit” (This Is the Lender Side)

Contractors search this phrase and often land on pages about asking a homeowner for a deposit before starting a job. That is a different topic. This article covers the lender side: a big deposit has landed in your account, and a bank statement loan underwriter wants to know where it came from.

The two topics do connect. A deposit invoice you wrote to a client, with the job named and the amount itemized, is the first link in the paper trail the lender will ask for later.

What the Underwriter Is Actually Checking

A bank statement loan is reviewed on documented income under the applicable program, subject to lender guidelines. The lender reads 12 months of business or personal statements, adds up the eligible deposits, divides by the number of months, and applies an expense factor. Scotsman Guide’s non-QM overview describes the same pattern: 12 to 24 months of statements, then a standard expense factor or a profit-and-loss statement prepared by a third-party tax professional.

That averaging step is why one big deposit matters. It lifts the average, and the underwriter has to decide whether it should.

Underwriters sort every unusual deposit into one of three outcomes:

1. Accepted as business revenue. It stays in the deposit total and gets the expense factor.

2. Excluded from income. It comes out of the total, and the average drops.

3. Treated as an asset. It does not count as income, but it may count toward a down payment or reserves if you can source it.

The same line on the statement can land in any of the three. What decides it is the paper behind it.

Most programs Lendmire places files with do not publish one number for “large.” Lenders typically tie it to a share of monthly qualifying income, a dollar floor, or both. Treat any figure you read online as one lender’s rule, not an industry standard.

The Contractor Deposit Matrix

Contractor income is lumpy by nature. Progress draws, final payments, retainage releases and insurance payouts can all look alike on a statement. This table shows the proof that usually resolves each one and how it is typically treated. Treatment varies by lender and file.

Notice what the strong rows share. Each one links a name, a date and an amount on the statement to a document created outside your own bookkeeping. A third party’s paper carries more weight than a note you wrote yourself.

The Workflow: Spot, Label, Attach, Explain, Package

Spot. Pull every page of every statement in the window, in the account holder’s name, with no cropped screenshots and no missing pages. Then highlight each deposit that breaks your normal pattern. Be harsh here. If a deposit surprises you, it will surprise the underwriter.

Label. Write a one-line tag beside each flagged deposit: date, amount, payer, job name, and which bucket from the matrix it belongs to. This becomes your deposit log.

Attach. Gather the proof that fits the bucket. For contractor work that usually means:

• the signed contract and the invoice or draw request;
• the owner’s or general contractor’s payment record, such as a check copy or payment confirmation;
• a 1099 where one applies;
• a project ledger showing what went out to subs and materials;
• for a loan, the loan agreement; for a sale, a bill of sale or closing statement; for a gift, a gift letter plus the donor’s statement.

Explain. Write a short letter of explanation for each deposit that is not obviously ordinary revenue. The next section shows how.

Package. Put the statements, the deposit log, the letters and the proof in one organized set, in date order. A tidy packet signals a business that keeps real books. A messy one invites more questions, and each question adds to the underwriting file.

Anatomy of a Strong Letter of Explanation

A good letter is short, factual and specific. It carries five things: the date, the amount, the source, a plain statement of why the deposit is not recurring income (or why it is, if it is), and a list of what is attached.

Here is a weak version: “The large deposit in March was from a job. Please accept this letter.” It names no payer, no job and no document, so it proves nothing.

Here is a stronger version, with the details described rather than filled in: “On the 14th, my business account received one deposit from the homeowner as final payment on a completed kitchen remodel. The job ran over four months under the attached contract. The attached invoice shows the balance due, and the attached check copy shows payment. This was the last payment on that job, and it is not expected to repeat monthly.”

The second letter gives the underwriter something to verify. It also shows why the deposit is a lump: a job finished and a balance came due.

One rule of thumb applies to every letter. If the letter makes a claim, an attachment should back it. A significant transaction that cannot be traced to a paycheck, a tax return or a documented source commonly triggers a request for exactly this kind of explanation, as Lexington Law’s guide to explanation letters notes.

A Worked Example: One Big Month, With and Without Proof

Run the numbers on a simplified file, using index figures instead of dollars. Say eleven months of business deposits each come in at an index of 100. One month shows 400, because a large final payment, a supplier refund and a one-time equipment sale all landed together.

Without proof. The lender sees an unexplained spike. A cautious underwriter may exclude the extra deposits or ask for conditions. If nothing is documented, the safest treatment is to strip out the amount above the normal level. The twelve-month average stays near 100.

With full proof. Suppose the final payment is documented with a contract and invoice. The refund and the equipment sale are shown as non-income, and the underwriter removes them. The final payment counts as revenue. The spike shrinks, and the average rises modestly above 100.

If everything counted. The average would be 125, which is 25% higher. That is the number nobody should count on. Underwriters do not average in refunds, sales or transfers.

Now apply the expense factor. For illustration only, a 50% factor on a business account would turn an average of 100 into qualifying income of 50. The lender sets the factor, and a CPA-prepared expense statement can change it. Across the lenders Lendmire works with, that factor often swings qualifying income more than any single deposit does, which is why cleaning up the classification matters.

Pass-Through Money and Commingling

Pass-through money is the contractor-specific trap. A homeowner pays a draw, and within days most of it goes out to subs and suppliers. On the statement it looks like revenue. In practice it behaves like a transfer.

Underwriters may trim or exclude that portion, and the expense factor already accounts for some of it. The proof that helps is the contract plus the payout records: sub invoices, supplier receipts and a project ledger. They show what you kept and what simply passed through.

Commingling creates a related problem. If personal groceries and job materials run through the same account, the underwriter cannot cleanly say what is business income. The fix is simple and works going forward: open a dedicated business account, run all job money through it, and pay yourself by transfer.

Be careful with that transfer. A move from the business account to your personal account is the same money, so it cannot count twice. If you submit both statement sets, expect the lender to remove the duplicate.

Where the General Rule Breaks

Documenting a deposit is rarely a pure paperwork question. A handful of situations change the outcome.

Personal versus business statements. Personal-account deposits typically skip the expense factor, but they must be cleaned of non-income items such as transfers and refunds. Business-account deposits get the factor. Which one produces more usable income depends on the file, and lenders in the network differ on what they accept.

Income versus asset treatment. A one-time deposit excluded from income can still count toward a down payment or reserves, but only if you can source it. Reserves on these programs commonly run around 6 months of the housing payment, so sourced funds matter beyond the income calculation.

Cash deposits. Cash is the hardest to document. Without an invoice, receipt or job record behind it, many underwriters will not count it.

Third-party payers. A client who paid through a spouse, a property manager or an insurer needs a paper link back to your contract. A letter explaining the chain, plus the payer’s record, usually covers it.

Newer businesses. Some programs expect roughly two years of business history. That varies by program sheet, so confirm it before you build the file.

The disclosure regime. Occupancy decides which rules frame the loan. An owner-occupied bank statement loan, on a primary residence or second home, is a consumer mortgage, and TRID disclosures apply. For consumer-purpose loans secured by a dwelling, Regulation Z § 1026.43 requires the lender to verify relied-on information with reasonably reliable third-party records. The CFPB’s compliance guide adds that a lender generally cannot rely on the borrower’s word alone about income, though it may use third-party records the borrower supplies. That is why a bare letter fails on a primary-residence file.

A bank statement loan on a non-owner-occupied rental, including a short-term rental, is business-purpose and exempt from TRID. Business-purpose investor loans are reviewed differently from a standard owner-occupied mortgage, though lenders still review credit, reserves and the property.

DSCR versus bank statement. On a DSCR loan, the property qualifies primarily on rental income covering the payment, subject to lender guidelines. Your deposits do not set qualifying income. They still matter for down payment and reserve sourcing. Read the complete DSCR loans guide if you are choosing between the two.

Leverage Context for Contractors Using Bank Statements

Across the network, a primary-residence purchase or rate-term refinance on bank statements can reach up to 90% LTV through select lenders, with the strongest files earning the top of that range. Owner-occupied cash-out on a primary residence or second home tops out around 80% LTV, with a fixed expense ratio (75% with an accountant-prepared ratio), depending on loan size and credit. Investment-property cash-out generally tops out around 75% LTV. Loan sizes typically run from $125,000 to $3,500,000.

All of this is subject to lender guidelines, credit review and property review, and none of it is a commitment to lend.

What If You Can’t Document It?

Sometimes the proof does not exist. The client paid cash years ago, or the job paperwork was never kept. The honest fallback options are limited, and none are magic.

• Accept the exclusion. If the deposit comes out of the income calculation, check whether the file still qualifies when reviewed on the lower average. Sometimes it does.
• Use a different window. Programs differ on 12 versus 24 months. A longer window can dilute one odd month, though it can also pull in weaker months.
• Bring in a CPA. A third-party expense statement can change the factor even when one deposit stays unexplained.
• Switch the structure. An asset-depletion option, which qualifies from liquid assets and runs up to about 80% LTV on a primary residence, avoids deposit averaging entirely but has its own sourcing demands.
• Wait and rebuild. Deposits close to the application date draw the most scrutiny. Another few months of clean, documented statements can fix what a letter cannot. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.

Notice what is missing from that list: creating paperwork after the fact. Backdated invoices and edited statements end files, so skip them.

A 30-Day Prep Checklist

Start a month before you apply, or earlier if you can.

1. Download complete statements for the whole window, every page.

2. Build a deposit log with a one-line tag for each unusual deposit.

3. Match each flagged deposit to a bucket from the matrix.

4. Collect contracts, invoices, draw requests and payment records for each draw and final payment.

5. Draft a short letter for each deposit that is not obviously ordinary revenue.

6. Move personal spending out of the business account, and stop mixing the two.

7. Avoid unexplained cash deposits and large transfers between your own accounts.

8. Ask your CPA whether a prepared expense statement makes sense for your file.

9. Put the packet in date order so the underwriter can follow it without a guide.

Tax treatment can depend on how the funds are used and how the property is held; investors should keep clear records and speak with a qualified tax professional before relying on any deduction.

Key Terms Defined

Large deposit: A deposit that stands out from your normal pattern, as judged by each lender’s own threshold, often tied to a share of monthly income or a dollar floor.

Letter of explanation: A short written statement that gives the date, amount and source of a deposit and lists the documents attached to prove it.

Sourcing: Showing where a sum of money came from, with a document that comes from outside your own records.

Expense factor: The percentage a lender subtracts from business deposits to estimate your take-home income, set by the lender and sometimes adjusted with a CPA-prepared statement.

Pass-through money: Funds that arrive in your account and leave soon after to pay subs or suppliers, so they behave more like a transfer than income.

Commingling: Mixing personal and business money in one account, which makes it hard to tell what is business income.

Next Step

Buying a large lot or financing a big purchase with bank statements can also trigger the sourcing questions covered in Lendmire’s piece How to Source a Large Deposit on a Super Jumbo Bank Statement Loan. Lendmire is a broker that arranges financing through select lenders in its wholesale network, and qualification stays subject to lender guidelines and underwriting.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage brokerage focused on DSCR investor financing, helping arrange programs through wholesale and investor-lending channels in 41 markets, including Washington, D.C. DSCR loans are evaluated by the lender on property cash flow rather than personal income, subject to lender guidelines, supporting LLC closings and accommodating investors with four or more financed properties. Scotsman Guide Top Mortgage Workplace in both 2025 and 2026.

References

1. Scotsman Guide: Rev Up the Engine for Non-QM Lending

2. Lexington Law’s guide to explanation letters

3. CFPB: Regulation Z § 1026.43

4. CFPB: ATR/QM Small Entity Compliance Guide