K-1 Income
The income reported on a Schedule K-1 to partners in a partnership or shareholders in an S-corporation — a key document lenders use to qualify self-employed business owners who don't file a simple Schedule C.
What K-1 Income Is
A Schedule K-1 reports your share of income, deductions, and credits from a pass-through entity — a partnership (Form 1065), an S-corporation (Form 1120-S), or certain trusts and estates. If you own part of a business that isn't a sole proprietorship, your slice of its profit shows up on a K-1 rather than a Schedule C, and that K-1 income flows onto your personal 1040.
For mortgage purposes, K-1 income identifies you as a self-employed borrower (lenders generally treat 25%-or-greater ownership as self-employment), and it brings its own underwriting wrinkles.
How Lenders Read a K-1
Underwriters look past the headline number to questions of cash and continuity:
- Ordinary business income (Box 1) is the starting point for qualifying income.
- Distributions — did the business actually pay the income out to you, or just allocate it on paper? Lenders often want to see that profits are distributed (or that the business has the liquidity to distribute) before counting them fully.
- S-corp wages — S-corp owners typically also draw a W-2 salary from the company; lenders combine the W-2 and the K-1 for the full picture.
- Add-backs and pass-through items — the business return may carry depreciation and other add-backs attributable to your ownership share.
A Worked Micro-Example
An architect owns 40% of a firm taxed as an S-corp. Her K-1 shows $80,000 of ordinary business income, and she also draws a $90,000 W-2 salary from the company. The firm distributed cash to its owners, and the business return includes depreciation.
The lender combines her $90,000 W-2 with her $80,000 K-1 ordinary income, adds back her 40% share of the business's depreciation, and applies a two-year average — building a qualifying income well above either single figure.
Why It Matters for the Self-Employed
K-1 income is where business-owner mortgages get complicated, and where good documentation pays off:
- Liquidity proof matters. If the business retains earnings rather than distributing them, a lender may discount or exclude the K-1 income unless the company clearly has the cash to pay it.
- Two entities, two stories. Owners of multiple pass-throughs need clean, consistent returns across all of them.
- Structure has consequences. Whether you take income as salary, distributions, or retained earnings changes both your tax picture and how a lender counts you.
If your income arrives via K-1, give your lender the full set — personal returns, the business return, and the K-1s — and be ready to show that allocated profit is actually available to you. Done right, K-1 income supports a strong approval; done sloppily, it stalls one.
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Related Terms
Schedule C
The IRS form (Profit or Loss From Business) that sole proprietors and single-member LLCs use to report business income and expenses — the document a mortgage lender reads first to understand a self-employed borrower.
Qualifying Income
The income figure a lender actually uses to approve your loan and calculate your debt-to-income ratio — which, for the self-employed, is rarely the same as either your gross revenue or your gross pay.
Add-Backs
Non-cash or non-recurring deductions a lender adds back to your net profit when calculating qualifying income — because they lowered your taxable income without actually reducing your cash flow.
Self-Employed Borrower
A mortgage applicant who earns income from a business they own rather than from an employer — generally anyone with 25% or more ownership of a business — and who is therefore underwritten on income they must document themselves.
Two-Year Average
The common underwriting practice of averaging a self-employed borrower's income over the two most recent years to smooth out fluctuations and confirm stability.
Related Articles
Mortgage Add-Backs Explained: How Depreciation and Non-Cash Expenses Boost Your Qualifying Income
Add-backs let underwriters undo the non-cash deductions on your tax return. Here are the five expenses lenders add back to net profit — with a worked example showing the qualifying-income lift.
The Self-Employed Tax Trap: How Write-Offs That Save You Taxes Can Sink Your Mortgage
The deductions that minimize your tax bill also shrink the income a lender counts. Here is the self-employed tax trap, why the two years before you apply matter most, and how to plan around it.
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