Declining Income Trend Changes The Calculation On A 1099 P&L Loan — The Quick Read: When your 1099 or P&L income drops year over year, lenders stop averaging the two years. They typically use the lower figure instead, and a written explanation plus a current profit-and-loss statement becomes the tool that can push the number back up. A modest, well-documented dip usually survives underwriting. A steep, unexplained one often doesn’t.
That’s the short version. Here’s how the mechanics actually work, where the exceptions live, and what an investor with a shaky personal-income trend should consider doing instead on the next rental purchase.
Key Terms Defined
Declining income trend — a self-employed borrower’s income dropping from one tax year to the next, which flips the underwriting math from an average to a conservative single-year figure.
P&L-only loan — a non-QM mortgage that qualifies a borrower off a profit-and-loss statement instead of full traditional personal-income documentation.
Expense ratio — the percentage of gross deposits a lender subtracts before counting income, used on bank-statement and P&L programs to estimate real business overhead.
Letter of explanation (LOE) — a written statement from the borrower describing why income moved, submitted to rebut a red flag in underwriting.
4506-C — an IRS form that authorizes a lender to pull a borrower’s tax transcripts directly from the IRS, used to confirm reported income.
What Counts As A Decline, And Who Decides?
There’s no single federal cutoff for what counts as a meaningful income drop. Different lenders draw the line in different places, and the underwriter’s read on the file matters as much as the percentage itself.
Some agency-backed programs use hard triggers. Self-employed borrowers with income drops over roughly 20% often get flagged for extra scrutiny under FHA rules, for example. Conventional overlays tend to run in the 15-25% range. A dip under 10%, paired with a solid explanation, frequently clears without much friction. None of these are Lendmire-network figures — they’re general market patterns cited to show how widely the threshold swings.
Non-QM P&L and 1099 programs don’t inherit a fixed percentage rule from any agency. They’re built by individual wholesale lenders, and the underwriting judgment on where a decline becomes disqualifying sits with whoever is reviewing the file. That’s actually the point: a 12% drop tied to a documented client loss can look very different from a 12% drop with no explanation attached.
How The Trend Test Changes The Math
The default is averaging. Most lenders take two years of income, add them together, and divide by 24 months to get a qualifying figure. That default only holds when the trend is flat or rising.
Once income has declined, the math flips. Fannie Mae’s Selling Guide frames this directly: self-employment income has to be stable or increasing to be averaged, and when it’s declining, the lender is expected to use the lower of the two years rather than the blended number. That guidance governs conventional loans, not non-QM P&L files, but the logic underneath it — trend first, dollar amount second — is the same logic a non-QM underwriter applies to a 1099 or P&L file.
Trade-press coverage of self-employed underwriting puts it bluntly: a rising trend gets averaged down toward the middle, but a falling trend frequently gets the borrower stuck with the worse of the two years, not the average, according to Truss Financial Group. The underwriter treats the drop as a trajectory until proven otherwise.
The Worked Example
Picture a self-employed 1099 contractor who reported $100,000 in adjusted income one year and $50,000 the next. Averaging would produce a figure well above what the lower year alone shows. That’s not what happens.
Because the trend is declining, the underwriter uses $50,000 instead, per the illustration in Gustan Cho Associates’ self-employed lending guide. The borrower loses the benefit of the stronger year entirely. If the drop were more severe — say from $100,000 down to $20,000 — the underwriter may question the income altogether rather than simply discounting it, since a fall that steep raises real doubts about whether the borrower can support ongoing payments.
This is a market-wide illustration, not a Lendmire program figure. It shows the mechanic, not a specific loan outcome.
Where This Hits Hardest On A Bank-Statement Or P&L File
On bank-statement and P&L programs specifically, the decline shows up twice — once in the trend itself, and once in how deposits get converted to qualifying income in the first place. Across Lendmire’s wholesale network, qualifying income on these files is calculated from eligible deposits over 12 or 24 consecutive months, after an expense ratio is applied.
That ratio depends on the type of business:
| Business Type | Typical Expense Ratio |
|---|---|
| Service business, no employees | 20% |
| Business with 1-5 employees | 40% |
| Business with 6+ employees or any product business | 50% |
| P&L method (accountant-supported) | up to 80% |
An accountant-provided ratio, or a P&L-based method, can replace the fixed tiers on some files — subject to lender guidelines and full underwriting. Transfers the borrower moves from their own business account into a personal account still count at 100% of value, which matters on a declining-trend file because it’s often the cleanest, most verifiable income line on the statement.
Here’s a quick note on documentation quality. A P&L is not automatically an “audited” statement. “Audited” is a specific, regulated label under professional accounting standards. Most self-employed borrowers submit a prepared or compiled P&L instead. This is a lower tier that many lenders accept, though acceptance varies by program.
Can A Written Explanation Actually Move The Number?
Yes, in a meaningful share of cases — but only if it answers two specific questions. Underwriters generally want to know whether the decline has stopped, and why it happened in the first place.
A written letter of explanation, paired with a current year-to-date P&L, is the standard way to test whether a drop is a one-off or a pattern. If a borrower can show the decline was tied to something genuinely unusual — losing one large client, a temporary shutdown, a documented market shock — some underwriters will discount that year from the calculation entirely rather than penalize the borrower for it long-term.
Investors working through this documentation gap for a rental purchase can see a full walkthrough of how to build one of these letters in Lendmire’s guide on how to write a declining income letter for a P&L loan. The mechanics of what the letter needs to say, and what it can’t fix, are covered there in more depth than fits here.
Reserves matter too on a bank-statement file. Across the network, reserve requirements run roughly 3 months of payments up to $500,000 in loan amount, 6 months up to $1,500,000, and 9 months above that — plus additional months for each other financed property, up to a 12-month cap. First-time investors are typically held to 12 months regardless of loan size. A borrower showing a declining trend who also carries strong reserves is a materially different file than one with neither.
When A Decline Isn’t Really A Decline
Not every drop is structural, and underwriters increasingly know the difference. Many borrowers saw dramatic pandemic-era income swings, then returned to normal. This is a well-documented example: once the recovery showed up in later statements, lenders treated the decline as a one-time event rather than a trend.
Other one-off patterns are also common. These include losing a single major client or a temporary facility closure. In these cases, the underwriter’s real question isn’t “did income drop?” It’s “will this likely happen again?” A borrower who can answer that question with documents is often in a much stronger position than the raw percentage decline suggests.
Ownership stakes matter here too. Owning 25% or more of a business typically triggers a request for business income documents, in addition to personal ones. This changes what the declining-trend analysis is actually built from — personal 1099 income alone stops being the whole picture.
Why DSCR Sidesteps This Conversation Entirely
Investors buying or refinancing a rental property have a structural way around the whole personal-income-trend problem. DSCR loans are built for non-owner-occupied investment properties. Because they are business-purpose investor loans, lenders review them differently than a standard owner-occupied mortgage.
Lenders review a DSCR loan mainly on whether the property’s rental income covers the payment, subject to lender guidelines. They don’t look at a borrower’s Schedule C, P&L, or whether an accountant signed anything. A 1.00x coverage ratio is a common benchmark on select programs. Sub-1.00 coverage is available through certain lenders in Lendmire’s network, with adjusted leverage and terms. But this isn’t guaranteed, and it never comes with a no-ratio option.
That’s a genuinely different question than the one this article has been walking through. An investor whose personal 1099 or P&L income is trending down on an owner-occupied refinance may find that the exact same declining-trend conversation simply doesn’t apply to the next rental acquisition, because the property’s own rent — not the owner’s tax return — carries the file. For a deeper look at how that qualification path works end to end, Lendmire’s complete DSCR loans guide covers the mechanics in full.
This matters most for investors whose income doesn’t look like a regular paycheck. That includes retirees living on portfolio distributions, self-employed owners between tax years, or anyone whose W-2 history stopped years ago after a career switch. Lendmire has written separately about how a W-2-to-1099 switch can erase income history on a personal-income file. That’s a related but distinct problem from the declining-trend issue covered here.
What Lenders Check Against The IRS
Whichever figure the file lands on — averaged, single-year, or letter-adjusted — most lenders verify it against IRS records before closing. That happens through Form 4506-C, which authorizes the lender to request tax return, W-2, and 1099 transcripts directly from the IRS Income Verification Express Service, with the borrower’s consent.
This step matters on a 1099/P&L file specifically because self-employed income is easier to misstate than a salaried paycheck, and the transcript pull confirms the numbers independently of whatever the borrower submitted. On some programs that check happens earlier in underwriting; on others it’s reserved for post-closing quality control. Either way, a declining-trend file that’s been carefully documented tends to hold up fine against a transcript check — it’s the undocumented, unexplained drops that create problems at this stage.
Across Lendmire’s wholesale network, credit floors on these bank-statement and P&L structures typically run 660 on the standard portfolio program and 680 on the bank portfolio program, stepping up to 700 above the network’s super-jumbo threshold. Debt-to-income up to roughly 50% is common on most files. None of that changes the trend analysis itself — it’s a separate underwriting layer that runs alongside it.
This is not legal or tax advice. Investors should speak with a qualified attorney or CPA about how their specific income situation and documentation will be treated before relying on any interpretation here.
Frequently Asked Questions
Does a small income dip automatically hurt my loan? Not necessarily. A modest decline — often under 10% — with a clear explanation frequently clears underwriting without much friction. It’s the size of the drop combined with the absence of a credible explanation that tends to create real problems.
Can I use three years of traditional personal-income documentation instead of two if my income declined? Some underwriters will ask for a third year of returns when a two-year trend looks ambiguous or the drop seems out of character for the business. It’s a judgment call by the underwriter reviewing the file, not a fixed requirement across every program.
Does the 4506-C mean the lender pulls my full return during underwriting? Not always. On some files the 4506-C authorization is used for post-closing quality control rather than the income decision itself, while on others transcripts get pulled earlier. The timing depends on the specific program.
If my personal income has been declining, should I even try a P&L loan for a rental purchase? It’s worth comparing that path against a DSCR loan, which is reviewed on the property’s rent instead of your personal income trend. For many investors buying rentals, that removes the declining-income conversation from that specific transaction entirely.
What if the decline was a one-time event, like losing one big client? Document it. A written explanation plus evidence the client relationship ended (and ideally, evidence of replacement income) gives the underwriter a reason to treat the drop as a one-off rather than a trajectory, which can materially change the coverage figure.
Investors weighing a P&L-based purchase against a property-income-based one can reach Lendmire, a mortgage broker working through select lenders across 40 markets, including Washington, D.C., at 828-256-2183 to compare how each path would size against a specific deal.
If you are buying or refinancing a rental property and want to see how the numbers work, Lendmire can help you compare DSCR loan options based on the property income, credit profile, leverage, and investor goals.
This article is for informational purposes only. It does not commit anyone to lend. Loan programs, guidelines, and eligibility criteria mentioned here are subject to change and to full underwriting review by the applicable lender. Lendmire is a mortgage broker that arranges financing through select lenders in its wholesale network. Lendmire does not itself fund, underwrite, or approve loans.
For current guidelines and terms, see Lendmire’s super jumbo bank statement loan programs page.
About Lendmire
Lendmire — NMLS# 2371349 — is a mortgage brokerage specializing in DSCR investor loans, helping arrange financing across 40 markets, including Washington, D.C., through wholesale and investor-lending channels. The model centers on property-level rental income reviewed by the lender rather than W-2 documentation, subject to lender guidelines, suiting entity-owned and multi-property investors. Lendmire holds Scotsman Guide Top Mortgage Workplace recognition for 2025 and 2026.
Lendmire’s Top Mortgage Workplace recognition is documented by Scotsman Guide 2025 Top Mortgage Workplace and Scotsman Guide 2026 Top Mortgage Workplace.
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References
1. Fannie Mae Selling Guide B3-3.2-01
2. Truss Financial Group – Fannie Mae Self-Employed Guidelines
3. Gustan Cho Associates – 1099 & Self-Employed Guidelines
4. IRS Income Verification Express Service
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Disclosure information. Lendmire is a state-licensed mortgage brokerage under NMLS# 2371349. Lendmire is not a depository institution, direct lender, or financial advisor — all loans referenced are placed through wholesale lender partners and are subject to each lender's underwriting standards. This article is provided for general informational purposes and is not a commitment to lend, nor does it constitute financial, legal, or tax advice. Loan programs, terms, rates, and qualification standards change without notice and depend on borrower profile, property type, and the state in which the subject property is located. Equal Housing Opportunity provider. NMLS Consumer Access: nmlsconsumeraccess.org.
