A secured promissory note is a written promise to repay a loan that is backed by a specific asset the lender can take if you stop paying. That pledged asset, the collateral, is what separates a secured note from an unsecured one and is usually why the interest rate is lower. These instruments turn up in mortgages, equipment financing, business loans, and private loans between family members, and the rules around them decide who gets paid first if the deal falls apart.
Why Collateral Changes the Loan
Every promissory note creates a legal duty to repay money on agreed terms: principal, interest, schedule, maturity. What makes a note “secured” is a security interest, a legal claim against a specific piece of property that lives alongside the promise to pay.1Consumer Financial Protection Bureau. My Mortgage Closing Forms Mention a Security Interest
An unsecured note relies on your promise and credit alone. If you default, the lender has to sue for a money judgment and then chase whatever assets you happen to own. That is slow and uncertain, so unsecured lenders charge more interest to cover the risk.
A secured note flips the arrangement. The lender already knows which asset it can go after, and its claim on that asset outranks most other creditors. That built-in recovery path is why secured notes carry lower rates. The trade-off for you is real: cheaper financing in exchange for a specific asset on the line.
It Is Actually Two Documents
A secured loan almost always involves two agreements, not one. The promissory note is your promise to pay, covering loan amount, interest, and schedule. The security agreement is a separate document granting the lender a security interest in the collateral. Under UCC Article 9, that security interest only becomes enforceable once you have signed a security agreement describing the collateral, the lender has given value, and you have rights in the property being pledged.2Legal Information Institute. Uniform Commercial Code 9-203 – Attachment and Enforceability of Security Interest
For real estate, the equivalent of the security agreement is a mortgage or deed of trust. You sign a promissory note promising to repay and a mortgage granting the lender a lien on the property. Both documents are necessary; neither does the other’s job. A promissory note without a security agreement is just an unsecured note, whatever the parties had in mind.
What the Note Itself Should Say
A promissory note that meets the formal requirements of UCC Article 3 qualifies as a negotiable instrument, meaning it can be transferred to another party who then has the right to collect on it.3Legal Information Institute. Uniform Commercial Code 3-104 – Negotiable Instrument Negotiable or not, the note needs to nail down:
- The full legal names and contact information of the borrower (the maker) and the lender (the payee).
- The principal amount.
- The interest rate, whether fixed or variable, along with how interest accrues and how any rate adjustments work. Variable rates often reference a benchmark like the Secured Overnight Financing Rate (SOFR).
- The repayment schedule: monthly installments, a single lump sum, or a balloon structure with a large final payment.
- The maturity date by which everything must be paid in full.
- A description of the collateral that matches the security agreement.
- The events that count as default, such as a missed payment past a stated grace period or letting required insurance lapse.
- An acceleration clause letting the lender demand the whole remaining balance on default rather than waiting for each installment.
- Late fees, usually a flat dollar amount or a percentage of the missed payment.
The acceleration clause is where most of the lender’s enforcement power lives. Without it, a lender facing a borrower who missed one payment can only sue for that single missed payment, not the full balance.
What Can Serve as Collateral
Almost any asset with measurable value can back a secured note. The category matters because it decides which body of law governs.
- Real property, meaning land and buildings, is governed by state mortgage and deed-of-trust law, not the UCC.
- Tangible personal property like equipment, vehicles, and inventory falls under UCC Article 9.4Legal Information Institute. Uniform Commercial Code 9-109 – Scope
- Intangible personal property, including accounts receivable, intellectual property, and investment accounts, also falls under Article 9.
Lenders size up collateral through the loan-to-value (LTV) ratio, which compares the loan amount to the appraised value of the pledged asset.5Consumer Financial Protection Bureau. What Is a Loan-to-Value Ratio and How Does It Relate to My Costs A $200,000 loan against property appraised at $250,000 has an LTV of 80%. Lenders want the ratio well below 100% so they have a cushion if values drop or the sale process eats into proceeds. Lower LTV usually earns you a better rate.
Perfection and Who Gets Paid First
Signing a security agreement creates a security interest between you and your lender, but that alone does not protect the lender against everyone else. If you take out multiple loans against the same asset, or you file for bankruptcy, the lender needs to prove it was first in line. That is what perfection does.
Personal Property
For collateral under UCC Article 9, perfection usually means filing a financing statement, commonly called a UCC-1, with a designated state office, typically the secretary of state. The statement lists the borrower’s name, the lender’s name, and a description of the collateral.6Legal Information Institute. Uniform Commercial Code 9-502 – Contents of Financing Statement The filing is public notice of the lender’s claim.
Filing location matters. Most financing statements go to a central state office, but collateral tied to real estate, such as fixtures or timber, is filed with the local office that handles mortgage recordings.7Legal Information Institute. Uniform Commercial Code 9-501 – Filing Office
Real Property
Security interests in real estate are perfected by recording the mortgage or deed of trust in the county land records office where the property sits. The recorded document tells anyone searching title that the property is encumbered.
Priority
When more than one creditor claims the same collateral, the one who perfected first generally wins. Under UCC 9-322, priority among competing security interests goes to whichever was filed or perfected earliest.8Legal Information Institute. Uniform Commercial Code 9-322 – Priorities Among Conflicting Security Interests That is why lenders file as soon as possible after closing. A few days of delay can cost a lender its first-lien position.
Insurance and Maintenance
Secured notes almost always require you to keep the collateral insured. If the asset is destroyed, the security interest becomes worthless, so the agreement will spell out minimum coverage and treat an insurance lapse as a default.
On mortgaged real estate, federal rules let the loan servicer buy hazard insurance on your behalf and bill you if you let coverage lapse. The servicer has to send two written notices first, with the initial notice at least 45 days before any charge is assessed.9Consumer Financial Protection Bureau. Force-Placed Insurance – 1024.37 Force-placed insurance is almost always more expensive than a policy you would buy yourself, so a lapse gets costly fast.
You are also generally required to keep the collateral in good condition. For equipment, that means operational and reasonably maintained. For real estate, it means not letting the property fall apart. Neglect can trigger default even when every payment has been on time.
What Happens if You Default
Default happens when you break the terms of the note. A missed payment is the usual trigger, but an insurance lapse, an unauthorized sale of the collateral, or a breach of any other covenant can also do it. Once default is on the table, the lender typically accelerates the debt, making the entire balance due right away.
Repossession of Personal Property
For collateral under UCC Article 9, the lender can take possession of the asset after default, either through a court proceeding or without court involvement, as long as it happens without any breach of the peace.10Legal Information Institute. Uniform Commercial Code 9-609 – Secured Party’s Right to Take Possession After Default “Without breach of the peace” means the repo agent cannot break into a locked garage, physically confront you, or use threats. If you object at the scene, the lender has to back off and go through the courts.
Foreclosure on Real Estate
Real estate cannot be repossessed the way a car can. The lender has to foreclose under state law, either judicially through the court system or non-judicially through a statutory procedure that ends in a trustee’s sale. Either route takes longer and costs more than a personal-property repo.
Sale, Surplus, and Deficiency
After taking possession, the lender sells the collateral to recover what it is owed. Under the UCC, every part of the sale, including method, timing, and terms, has to be commercially reasonable, and the lender must send you reasonable notice of the planned disposition beforehand.11Legal Information Institute. Uniform Commercial Code 9-611 – Notification of Disposition A lender that dumps the asset in a fire sale can lose its right to collect any shortfall.
If the sale generates more than the debt and expenses, the lender has to return the surplus to you. If the sale falls short, you remain personally liable for the difference. That shortfall is called a deficiency, and the lender can get a court judgment for it and collect against your other assets or income.
Recourse vs. Non-Recourse
The deficiency rule above assumes a recourse note, which is the default. Recourse means the lender can pursue both the collateral and your other assets if the sale does not cover the debt. Most secured promissory notes are recourse.
A non-recourse note limits the lender to the collateral itself. If the sale falls short, the lender eats the loss. Non-recourse terms show up mostly in large commercial real estate deals and are rarely offered on smaller loans. Even then, lenders build in carve-outs (fraud, intentional damage) that flip the loan back to full recourse. The distinction matters: on a recourse note, a deficiency judgment can lead to wage garnishment and liens on your other property.
The Tax Trap on Private Loans
When a secured promissory note is used for a private loan, especially between family members or between a business and its owner, the IRS watches the interest rate. If the rate is below the Applicable Federal Rate (AFR) that the IRS publishes monthly, the loan is a “below-market loan” and the IRS imputes interest that neither side actually charged.12Office of the Law Revision Counsel. 26 USC 7872 – Treatment of Loans With Below-Market Interest Rates
The lender is treated as if it received interest at the AFR, even on a 0% note, and has to report that phantom interest as income. On a gift loan, the gap between AFR interest and actual interest is also treated as a gift from lender to borrower, with possible gift tax consequences. On employer-employee or corporation-shareholder loans, the imputed amount becomes compensation or a dividend.13Internal Revenue Service. IRS Publication 550 – Investment Income and Expenses
There is a $10,000 de minimis exception. If total loans between two individuals stay at or below $10,000, the imputed interest rules do not apply, unless the loan is used to buy income-producing assets.12Office of the Law Revision Counsel. 26 USC 7872 – Treatment of Loans With Below-Market Interest Rates Check the current month’s AFR before setting a rate on a private note.
Your Lender May Not Stay Your Lender
A promissory note that qualifies as a negotiable instrument can be sold or transferred, and the security interest travels with it. This is standard in the mortgage industry, where loans are bundled and sold to investors. The new holder steps into the original lender’s shoes with the same rights, including the right to enforce the security interest and foreclose on default.
The obligation on your side does not change. A transfer does not shift your payment terms or give the new holder rights the original lender did not have. What it does mean is that you may start receiving payment instructions from an entity you have never dealt with, which catches many borrowers off guard.
Getting the Lien Released After Payoff
Paying off the debt does not automatically clear the lender’s recorded claim. For personal property under Article 9, the lender has to file a termination statement once the obligation is gone and no further advances are committed. If you send a written demand, the lender has 20 days to file.14Legal Information Institute. Uniform Commercial Code 9-513 – Termination Statement The termination statement (often called a UCC-3) is filed in the same office as the original financing statement and removes the public notice.
For real estate, the lender files a satisfaction or release of mortgage with the county recorder. Until that is recorded, the mortgage still shows on the property’s title and can complicate a sale or refinance. Most states penalize lenders who drag their feet, or let the borrower petition to have the record cleared. Either way, confirm the release has actually been recorded after any secured payoff. A lingering lien on your property or a stale UCC filing against your business can create problems years later when you try to borrow again or sell the asset.