How a Bank Statement Lender Counts Shared Business Deposits

The Quick Read: A bank statement lender counts only the deposits it can trace to your business revenue, then removes transfers and one-time money, applies an expense factor to business accounts, and prorates the result by your documented ownership share. The lender sets each of those steps in its own program guidelines, so the same account can produce different income on different programs.

• “Shared” can mean four things: a co-owned business account, a commingled account, a joint account with a non-borrower, or money moving between your own accounts.
• Only your documented ownership percentage of the net figure counts on a co-owned business account.
• Transfers, loan proceeds, gifts and refunds come out before anything is averaged.
• The expense factor is a lender default, not a universal rule, and a CPA-prepared ratio may replace it where the program allows.
• Clean paperwork before the statement window opens does more for your income than any explanation afterward.

DSCR loans qualify a rental on the property’s income, so personal deposits never enter that file. Shared deposits matter when a self-employed investor chooses a bank statement loan instead, or alongside a DSCR purchase. Lendmire is a broker that arranges these loans through select lenders in its wholesale network, so the view below comes from watching many lenders’ guidelines side by side.

What Does “Shared” Mean on a Loan File?

Lenders use “shared” for four different situations, and each gets different treatment. Mixing them up is where most borrowers misjudge their own numbers. Sort yours first, because the proof required and the risk flagged are different in each case.

Key Terms Defined

Bank statement loan: A mortgage that is reviewed around documented income under the applicable program, using 12 months of business or personal bank statements instead of tax-return income.

Eligible deposit: A credit the lender accepts as business or personal revenue, such as recurring customer payments.

Expense factor: The share of business deposits a lender treats as operating costs, so only the rest counts as your income.

Ownership share: The percentage of a business you can document as yours, usually through an operating agreement, K-1 or CPA letter.

Commingling: Mixing personal and business money in one account, which makes revenue hard to identify.

Transfer matching: Pairing each transfer out of one account with its deposit into another so the same dollars never count twice.

How Does Underwriting Actually Treat These Deposits?

Underwriting follows a repeatable sequence. The steps below are typical practice across the programs in the network, not a published formula. Individual lenders vary on details, and every file is underwritten on its own facts.

1. Pick the statement type. The program reads personal statements, business statements, or both. This choice decides whether an expense factor applies and how transfers are handled.

2. Prove the account and the business are yours. For a co-owned business, the underwriter needs your percentage documented. An operating agreement, K-1 or CPA letter is the usual proof, and the documents should agree with each other.

3. Screen every deposit. Each credit lands in one of three piles: counted, excluded, or needs explanation. Recurring customer revenue is counted. Own-account transfers, loan proceeds, gifts, refunds and one-off windfalls come out. Large, cash or unsourced deposits get flagged.

4. Match transfers across accounts. If you submit several accounts, each transfer out is paired with its deposit in. Unmatched transfers are excluded or questioned.

5. Average what remains over the statement window. Twelve months is the standard in the network, though some lenders review longer.

6. Apply the expense factor to business accounts. Personal accounts usually carry none, but their deposits get more scrutiny on whether they trace to business income.

7. Prorate by ownership share. Practitioners commonly describe the formula as eligible deposits divided by months, times one minus the expense factor, times your ownership percentage.

8. Feed the result into the debt-to-income calculation on owner-occupied files. Rental files follow the program’s own rules.

Why does the order matter? Screening and matching come first so the average is built only from real revenue. Prorating comes last so you are not paying the expense factor twice on a figure already cut down to your share. A lender that reverses the steps can produce a different answer from the same statements, which is one reason to ask how a program sequences them.

A Worked Example With Index Numbers

Take one deposit stream and call its eligible monthly average 100. These numbers are hypothetical index points, not dollars, and each lender’s factors differ.

The partner and the sole owner see identical deposits and very different income. Counting a shared account before proration is the classic way to overstate borrowing power. The personal-statement row looks generous because no factor applies, which is exactly why lenders look harder at whether those deposits trace to real business revenue.

Co-Owned Business Accounts

If you share the business with partners, only your documented percentage of the net figure counts. The lender wants to see that percentage in writing, and the paperwork has to line up. An operating agreement that says 30% and a K-1 that says 40% will stall a file until someone explains the gap.

Most programs we place files with set a minimum ownership level for business statements. That floor is lender-specific, and a few lenders aggregate co-borrowers’ ownership when more than one person is on the loan. Ask for the exact floor before building a strategy around a small stake.

Mid-window changes deserve a flag. If a partner joined or left during the statement period, the lender may question which months reflect your current share. Bring the amended agreement and a short written explanation. For more on this exact case, see Lendmire’s piece How a Bank Statement Lender Counts Deposits for a Partial Owner.

Some borrowers wonder whether a CPA letter settles it. It does not. A letter supports the file, and if it claims expenses far lower than the statements show, the lender falls back on its own factor.

Commingled Accounts

When personal and business money share one account, the underwriter cannot tell which deposits are revenue. The lender will try to separate them by reading the account line by line. Where it cannot, it excludes the unclear deposits or limits what it will accept.

Some programs allow commingled accounts only for sole proprietors, and they often want a clear pattern of customer payments. The practical fix is plain. Open a dedicated business account and run revenue through it before the statement window begins. Moving money around right before review tends to create new transfers the lender must match, which makes the picture messier, not cleaner.

Joint Accounts With Someone Not on the Loan

A joint account with a spouse or other person who is not a borrower is the least settled area. Lenders commonly want a letter confirming you have access to the funds, and they will ask where the deposits came from. If the other holder’s paycheck feeds the account, those deposits do not become your business income.

The safest approach is to qualify on an account you own, or to document clearly which deposits are yours.

Transfers, Owner Draws and Double Counting

A transfer is not new money. When you pay yourself an owner draw from the business into a personal account, the dollars were already counted as business deposits. Counting them again on the personal side overstates income. Many programs accept the draw as evidence of your cash flow but not as an additional deposit, and treatment depends on the program.

If you own several businesses, expect ownership proof for each entity, and expect the expense factor to be applied entity by entity. Lendmire’s piece How Personal vs Business Deposits Affect Bank Statement Qualifying Income covers the personal-versus-business choice in more depth.

Does the Occupancy of the Property Change the Rules?

Yes, and it decides which disclosure regime applies. An owner-occupied purchase or refinance is a consumer mortgage, so the lender must show it can reasonably determine you can repay. Under the CFPB ability-to-repay rule, the lender needs to verify only the income or assets it actually relies on. The CFPB small-entity compliance guide lists bank statements among acceptable records and says a lender cannot rely on what a borrower says orally.

That is why “non-QM means no documentation” is a myth. It is alternative documentation, not missing documentation.

A bank statement loan on a non-owner-occupied rental, including a short-term rental, is business-purpose. The text of the business-purpose exemption exempts credit extended primarily for business purposes, so the consumer framework may not apply. The lender’s own investor guidelines still govern, and the exemption is not automatic for every investment property. Nothing in either regime tells the lender how to convert deposits into income. The expense factor, the ownership threshold and the exclusion list are lender policy.

Leverage and Loan Structure

Program ranges vary by occupancy, and they are typical, not guaranteed. Through select lenders in the network:

• On a primary-residence purchase or rate-term refinance, leverage can reach up to 90% LTV, with stronger files earning the top of the range.
• On an owner-occupied cash-out, a primary residence goes up to 80% LTV with a fixed expense ratio, or 75% with an accountant-prepared ratio. A second home tops out around 75% LTV.
• On an investment-property cash-out, leverage tops out around 75% LTV. Investment purchase leverage on bank statement documentation varies by lender.
• An asset-depletion alternative is reviewed against liquid assets, up to about 80% LTV on a primary residence.
• Loan amounts run roughly $125,000 to $3,500,000, and reserves commonly run around six months of the housing payment.

Term length follows each lender’s program sheet. Don’t assume any particular structure until a lender confirms it. All of this is subject to lender guidelines, credit approval and property review. This is not a commitment to lend.

When the Bank Statement Path Is the Wrong Fit

If your deposits won’t trace cleanly, a bank statement loan will fight you. Declining deposits, heavy commingling, or a small ownership stake all shrink the number. That is when a DSCR loan on a rental can fit better, because it qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. Read Lendmire’s complete DSCR loans guide for how that path works.

The split is simple. Bank statements suit a self-employed borrower with strong deposits but weak tax-return income. DSCR suits an investor whose rental works on its own regardless of personal income.

Preparing the File: A Pass/Fail Checklist

• Separate funds. Business revenue goes to a business account before the statement window opens.
• Pair every transfer with a matching debit and credit.
• Align ownership paperwork. Operating agreement, K-1 and CPA letter should state the same percentage.
• Source large deposits with invoices or contracts before the underwriter asks.
• Avoid new money movement right before review.
• Ask each lender how it orders proration and the expense factor, what its ownership floor is, and whether it accepts commingled or joint accounts.

Tax treatment varies; consult a qualified professional.

About Lendmire

Lendmire — NMLS# 2371349 — is a mortgage broker that arranges bank statement, P&L-only, 1099-only and asset-based home financing in 16 states through wholesale lenders, on primary residences, second homes and investment properties. Every option is subject to the lender’s guidelines and full underwriting. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. CFPB Regulation Z § 1026.43, Ability-to-Repay

2. CFPB ATR/QM Small Entity Compliance Guide