Short answer: A (prime) lenders offer the best rates but need your tax returns to support the income. B lenders help strong borrowers whose taxable income is low because of write offs, or whose credit is good but not perfect, at somewhat higher rates and usually a lender fee. Alternative and private lenders handle more complex stories with flexible documentation. Many self employed buyers start in one lane and move to a prime lender at renewal once their file improves.
A Lenders
Traditional prime lenders that want strong credit, strong income documentation and clean tax based income. Best when your returns show enough income. Lowest rates, strictest documents.
B Lenders
For borrowers who are strong overall but don’t fit a prime rule, for example lower taxable income due to write offs or credit that’s good but not perfect. More flexibility, slightly higher rates.
Alternative Lenders
A broader category for complex income or flexible documentation, including stated income approaches. The right tool for some profiles, not just a last resort.
How to Choose
Credit, down payment, business structure, documented income, timeline, property type and goals. The right lane is the one where your story naturally fits the lender’s rules.
Starting in One Lane, Moving Later
Common and smart when timing matters: buy now in a B or alternative mortgage on a shorter term, strengthen your file, then move to a prime lender at renewal.
→ Related: Self Employed Pre-Approval, Step by Step
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Frequently asked questions
Can self employed borrowers qualify with an A lender?
Yes, when tax documented income supports the mortgage, credit is strong and documents are complete.
Are B lenders only for bad credit?
No. They serve strong borrowers who don't fit one A lender guideline, often because write offs reduce taxable income.
Do B lenders charge fees?
Often yes, typically a lender fee and a higher rate. Weigh that against buying now and moving to a prime lender later.
This article is general information, not personal financial advice. Rates, rules and programs change. Talk to a licensed mortgage broker about your situation. Lacroix Mortgage Group is licensed through Mortgage Connection Inc.