Acceleration Clause
A note provision letting the holder demand the entire balance at once upon default — the legal trigger that makes foreclosure possible.
An acceleration clause is a provision in a promissory note (and mirrored in the mortgage or deed of trust) that lets the holder demand the entire unpaid balance immediately if the borrower defaults — rather than being limited to collecting only the missed payments. Acceleration is the legal mechanism that makes foreclosure possible: without it, a holder could only sue for each overdue installment. For note buyers, a properly drafted acceleration clause is essential to enforcing the note on default, so it is part of what due diligence confirms.
How acceleration works
In a normal month, the borrower owes only that month's payment. But if the borrower defaults — typically by missing payments past the grace period, or by violating another covenant (failing to pay taxes, letting insurance lapse, or transferring the property in breach of a due-on-sale clause) — the acceleration clause lets the holder:
- Declare the loan in default and provide any required notice/cure opportunity.
- Accelerate — demand the full unpaid principal balance plus accrued interest and fees at once.
- Foreclose if the accelerated amount is not paid, pursuing the trustee sale or judicial process.
Without acceleration, the entire balance would not be due, and the holder could not foreclose for the full debt — they would be stuck chasing individual late payments.
Notice and cure requirements
Acceleration is powerful, so the law and most notes require procedural steps before it sticks: a notice of default, an opportunity to cure (bring the loan current) within a set period, and sometimes a separate notice of intent to accelerate. Many states (and the security instrument) spell these out. A holder who accelerates without following the required steps can have the action challenged, which is why proper documentation matters.
Reinstatement after acceleration
Even after acceleration, the borrower often has a right of reinstatement — curing the default (paying the arrears plus costs) to stop the foreclosure and restore the original payment schedule, depending on state law and the note terms. This interacts with acceleration: the clause speeds things up, but reinstatement rights can pause or reverse the process.
Why it matters when you sell
A note buyer wants confidence that, if the borrower stops paying, the note can actually be enforced. That requires:
- A clear acceleration clause in the note and security instrument
- Documentation that any required notice/cure procedures can be followed
- Consistency with the state's foreclosure law
A note lacking a proper acceleration clause, or with ambiguous default terms, is harder to enforce and therefore riskier and worth less. This is especially important for non-performing notes, where enforcement is the whole point.
What it means when you sell
Make sure your note and security instrument are in the collateral file so the buyer can confirm the acceleration and default provisions. A well-drafted note with a standard acceleration clause supports a clean, confident valuation; weak or missing enforcement terms invite a discount. For a performing note this is rarely an issue; for a defaulted note it is central.
This is general information, not legal advice; acceleration and notice/cure requirements vary by state and instrument.