Portfolio Loan vs Conventional Mortgage Calculator
Portfolio loans stay on the originating lender's balance sheet rather than being sold to Fannie Mae or Freddie Mac. They offer DTI flexibility and faster underwriting — at a higher rate. Compare the monthly payment, total interest, and qualifying difference.
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| Portfolio Total Cost | — |
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What Is a Portfolio Loan
A portfolio loan is a mortgage the originating lender keeps on its own balance sheet rather than selling to Fannie Mae or Freddie Mac. Because the lender holds the risk, they set their own underwriting criteria — looser than Fannie/Freddie guidelines.
Common portfolio loan products: bank statement loans (for self-employed), DSCR loans (for investment properties qualified on rental income), asset-depletion loans (qualifying via retirement assets), non-warrantable condo loans, and ITIN/foreign national loans. All trade higher rates for qualification flexibility.
Why Portfolio Rates Are Higher
Lenders price portfolio loans 75-200 basis points (0.75% to 2%) above conventional. The premium reflects: no secondary market liquidity, longer-tail credit risk, and operational complexity. On a $500,000 loan, a 1% rate premium costs ~$340/month and $120,000 over 30 years.
But the portfolio loan often beats nothing — if you can't qualify conventional, the alternative is no loan at all. Calculate whether the deal still makes sense at the portfolio rate.
Source: Lender pricing surveys, consumerfinance.gov mortgage market reports
When to Pick Portfolio Over Conventional
Pick portfolio when: your DTI exceeds 50%, you have less than 2 years of self-employed income history, the property is non-warrantable, you need to close fast (no Fannie/Freddie automated underwriting), or your credit has a recent derogatory event the AUS won't accept.
Pick conventional when: you fit the box. Conventional almost always wins on rate. The only reason to choose portfolio over a viable conventional path is closing speed or a unique need.
Refinance Strategy
Many portfolio borrowers plan to refinance to conventional once they 'season' the loan (12-24 months) and their tax returns or credit profile aligns with Fannie/Freddie rules. Build the refi cost into your total cost analysis.
See our refinance savings calculator to plan the conventional refi after portfolio seasoning.