Promissory Note

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A promissory note is a legally binding written promise to repay borrowed money — in a mortgage context, it’s the document that makes you personally…

A promissory note is a legally binding written promise to repay borrowed money — in a mortgage context, it’s the document that makes you personally liable for the debt, separate from the lien on your property. If you hear “mortgage note” and “promissory note” used interchangeably in real estate, that’s because they’re essentially the same document.

How It Differs From the Mortgage Itself

The promissory note creates your personal obligation to repay. The mortgage (or deed of trust) creates the lender’s security interest in your property. Two documents, two purposes. The note says “I owe you $350,000.” The mortgage says “If I don’t pay, you can take the house.”

In non-recourse states like California, the lender can take the house but can’t come after your other assets. In recourse states like Florida, the promissory note lets them pursue you personally for any remaining balance after foreclosure.

Dollar Example

You sign a promissory note for $400,000 at 7.00%. Three years later, you default. The lender forecloses and sells the house for $360,000 after costs. In a recourse state, you still owe $30,000+ on the promissory note (the remaining balance minus the sale price). The lender can sue you for that deficiency.

Watch Out

The promissory note is negotiable — meaning it can be bought, sold, and transferred. That’s how mortgage-backed securities work. Your note might end up owned by an investor on the other side of the world. This is normal and legal, but it means disputes about loan terms should reference your original signed note.

Never sign a promissory note with blank fields. Every term — amount, rate, payment, dates — should be filled in before your signature goes on the page. Review the note against your Loan Estimate to confirm everything matches.

Frequently Asked Questions

Can a promissory note be modified after signing?

Only with both parties’ written consent. If you need a loan modification, the lender will draft a new note or an addendum modifying the original terms. Verbal agreements to change note terms are not enforceable. Everything must be in writing, signed, and dated.