Affordability When You Are Self-Employed
Self-employment adds three layers of friction to home buying: how lenders calculate your income, what documentation you need, and how aggressive they will be with your DTI.
How Lenders Actually Calculate Your Income
Lenders average your last two years of tax-return net income (after business deductions). They do not care about gross revenue. If you earned $200,000 gross and wrote off $80,000 in expenses, your qualifying income is $120,000 — the number on Line 31 of your Schedule C.
This is why aggressive tax deduction strategies hurt you at mortgage time. Every deduction saves tax but reduces borrowing power by roughly 3x the deduction amount.
The Two-Year Rule Has Exceptions
If your business is under 2 years old: most conventional loans reject you. Portfolio lenders and bank statement loans may accept 12 months with strong documentation.
If income is declining year-over-year: lenders use the lower of the two years, not the average. A $140k year followed by a $100k year qualifies as $100k.
If income is rising: lenders usually still average, capping upside at the two-year mean. A $80k year followed by $160k only qualifies as $120k.
Bank Statement Loans
If your tax returns understate your true income, bank statement loans use 12–24 months of deposits as income proof instead. Trade-offs: rates 0.75%–1.5% higher, down payment minimum 10%–20%, and fewer lenders offer them.
Documentation You Need
- Two years of personal AND business tax returns, all schedules.
- Year-to-date profit and loss statement (must be CPA-prepared for some lenders).
- Two years of 1099s if you have W-2 supplements.
- CPA letter confirming your business is still operating.
- Business bank statements (2–12 months depending on lender).
Preparing 2+ Years in Advance
If you know you want to buy in 2–3 years:
1. Reduce aggressive deductions in the two years leading up to purchase. Yes, you will pay more tax. No, there is no way around this trade. 2. Show growing net income year over year. 3. Keep personal and business finances cleanly separated. 4. Pay off high-minimum consumer debt — a $300 car payment kills more mortgage affordability than a $30k business line of credit at $0 minimum.
Use the calculator with your qualifying income — Schedule C Line 31 averaged over two years — not your gross.