A loan agreement is the two-party contract behind a serious private loan: the lender's promise to fund, the borrower's promise to repay, and everything that protects each side in between, including interest, schedule, representations, optional collateral, and remedies on default.
Use it when a bare IOU is not enough: business loans, secured loans, and any loan large enough that you would sue over it. For simple family loans, a promissory note is often sufficient.
Secured or unsecured: the single biggest decision
An unsecured lender who wins a lawsuit still has to collect like any other creditor. A secured lender has a claim on a specific asset: if the borrower defaults, the collateral can be repossessed and sold under Article 9 of the Uniform Commercial Code. Securing a loan requires two steps this template supports: granting the security interest in the agreement, with the collateral described precisely, and perfecting it, usually by filing a UCC-1 financing statement with the secretary of state so the lender's claim beats later creditors.
Describe collateral like a title office would
"Business equipment" is a weak description; "Diedrich IR-12 roaster, serial DR-12-88451" is a strong one. Serial numbers, VINs, and locations make repossession and priority disputes clean.
The clauses that earn their place
- Amortized installments: a fixed monthly payment with a final maturity date leaves no room for "I thought I could pay later".
- Acceleration on default: after a missed payment and notice, the whole balance comes due, so the lender sues once instead of monthly.
- Representations: the borrower certifies their financial information was accurate, which becomes powerful evidence if it was not.
- Costs of collection: attorney fees and collection costs shift to the defaulting borrower where state law allows.
- Amendment in writing only: kills the later claim that someone verbally agreed to forgive payments.
Usury, licensing, and tax: the edges to respect
Three legal edges surround private lending. Usury laws cap interest rates, with limits varying by state and by whether the borrower is a business. Lender licensing laws in some states regulate people who make loans repeatedly or charge high rates, though one-off private loans are generally exempt. And the IRS Applicable Federal Rate sets a floor for related-party loans: charging less than the AFR on a sizable loan to family or to your own company can trigger imputed interest. None of this bites a typical arms-length private loan at a modest rate, but a licensed professional is the right call for unusual structures.
Real estate is different
A loan secured by real property involves a mortgage or deed of trust, recording requirements, and often foreclosure rules. Use a deed of trust with the note for real estate security rather than a general collateral clause.
For small, simple loans between individuals, a shorter promissory note often does the job. If repayment terms need to change later, record it with a loan modification agreement, and if the borrower defaults, start collection with a demand letter for payment.
When a loan agreement is the right document
Reach for the full agreement instead of a bare note whenever the loan carries structure worth protecting. The signature cases: a loan secured by equipment, inventory, or a vehicle, where the collateral clause and UCC filing are the whole point; a business loan where the lender wants representations about the borrower's finances; funding disbursed in stages tied to milestones; a loan to or from your own LLC or corporation, where the formality preserves the liability shield; and any personal loan large enough that you would genuinely sue over it, because the agreement's remedies clauses are what make that suit fast and cheap.
The document also earns its keep in calm times, not just disputes. A written schedule with defined late charges removes the awkwardness of chasing a friend for money: the paper does the chasing. And when a business borrower seeks bank financing later, a properly documented private loan reads as debt that can be subordinated, rather than a murky related-party arrangement that stalls underwriting.
Anatomy of the agreement
Parties, principal, and funding
Identify both parties exactly as they exist legally: full legal names for individuals, registered names and entity types for companies, with signers stating their authority (member, manager, president). Fund the loan by a traceable method (wire, check, ACH), never cash, and keep the transfer record with the agreement: the paper proves the promise, the transfer proves the money moved.
Repayment mechanics
The schedule states the payment amount, frequency, first payment date, and maturity date, plus how payments apply (typically to accrued interest first, then principal). Precision here is what prevents the two classic disputes: 'I thought interest only' and 'I thought I had more time'. If payments will be irregular by design, say so and define the minimum: courts enforce defined flexibility, not vagueness.
Representations and covenants
Representations are snapshots the borrower certifies at signing: the financial information provided is accurate, no litigation is pending, the signer has authority. Covenants are promises about behavior during the loan: maintain insurance on collateral, do not sell it, notify the lender of address changes. Neither adds burden to an honest borrower, and both give the lender an early exit if the picture was false or deteriorates.
Default, remedies, and the guaranty
The default section defines the triggers (missed payment beyond grace, false representation, insolvency, collateral loss) and the remedies ladder: notice, acceleration of the full balance, collection costs and attorney fees where allowed, and repossession of collateral for secured loans. If a guarantor backs the loan, the guaranty should be signed at closing, cover the full obligation including modifications, and survive renewals, because a guaranty that lapses at the first extension protects no one.
The closing checklist
- Verify identity (government ID) and, for entities, authority and good standing with the state registry
- Agree on final terms and generate the agreement; both parties read the whole document
- Sign and date, ideally before a notary for larger loans; each party keeps a complete signed copy
- Fund by a traceable transfer that matches the principal stated in the agreement
- For secured loans, file the UCC-1 financing statement (or note the lien on a vehicle title) promptly: priority runs from filing
- Calendar the payment dates and the maturity date, and record every payment received against the schedule
Notarization is optional but cheap insurance
No state requires a loan agreement to be notarized to be enforceable. For significant amounts, notarizing the signatures eliminates the only defense that ever really threatens a clean document: 'that is not my signature'.
Common loan agreement mistakes
- Funding in cash with no transfer record, leaving the loan's existence provable only by the paper
- Describing collateral generically, then losing a priority dispute to a creditor with a precise filing
- Granting a security interest but never perfecting it: an unfiled security interest loses to later filed creditors and to a bankruptcy trustee
- Letting the borrower's early missed payments slide silently, then trying to enforce strictly later (send a written reminder every time)
- Signing for an entity without stating the title, which can create personal liability arguments on both sides
- Forgetting state usury caps when pricing risk: an aggressive rate can cost the lender the interest, or more
- Modifying the schedule by text message: use a written, signed modification
- No plan for the end: at payoff, sign a release, return any title or file the UCC-3 termination, and mark the agreement satisfied
Living with the loan: servicing, records, and payoff
A loan agreement is not a file-and-forget document. The lender should keep a simple ledger from day one: date and amount of each payment, how it split between interest and principal, and the running balance. Spreadsheet software is enough for a private loan, and sharing the ledger with the borrower once or twice a year prevents the classic end-of-loan dispute where the two sides' balances differ by hundreds of dollars. Every payment should move through a traceable channel, and any cash payment should generate a signed receipt on the spot.
When something changes, paper it. A skipped payment the lender agrees to forgive, a temporary rate reduction, or an extended maturity all belong in a short written modification signed by both parties, because oral changes to a written loan are difficult to prove and some agreements expressly exclude them. At payoff, the lender should hand over a signed release or mark the original agreement paid in full, terminate any UCC financing statement, and return collateral titles. The borrower should keep that release permanently: it is the only clean proof the debt no longer exists if a records mix-up or an estate administration raises the question years later.
Family loans deserve one extra layer of paperwork: intent. If a parent lends to one child, the loan should be visible in the parent's estate planning, because an undocumented balance invites siblings to argue over whether it was a loan or a gift. A signed agreement with a ledger settles the question, and the parent's will or trust can then say what happens to the balance at death: collected by the estate, deducted from that child's inheritance, or forgiven outright. Forgiveness during life works too, one installment at a time, but each forgiven amount is a gift for tax purposes, so larger loans justify a conversation with a tax professional before the eraser comes out.
Frequently asked questions
What is the difference between a loan agreement and a promissory note?
A note is a one-sided signed promise to pay; an agreement is a two-sided contract with representations, covenants, optional collateral, and remedies. Use the agreement when the loan is secured, business-related, or large enough that enforcement matters.
How do I secure the loan with collateral?
Select the secured option and describe the collateral precisely: make, model, serial number, location. To protect priority against other creditors, the lender should also file a UCC-1 financing statement with the state, which is a short standard form.
Can two businesses use this loan agreement?
Yes. Enter the company names as lender and borrower, and have authorized officers sign. Business-to-business loans often qualify for higher usury limits than consumer loans, but the cap still depends on the governing state.
What interest rate should I use?
A market-appropriate rate below your state's usury cap. For loans to related parties, at least the IRS Applicable Federal Rate avoids imputed-interest problems. Zero interest is allowed and the document adapts its wording.
What happens if the borrower defaults?
After a payment is 15 days late and written notice is given, the lender can accelerate the full balance, sue for it, recover collection costs where allowed, and, if the loan is secured, repossess and sell the collateral under UCC Article 9.
Does a loan agreement need to be notarized or witnessed?
No. The parties' signatures make it binding in every state. Notarization is recommended for larger loans because it forecloses signature disputes, and it is required for related documents like a deed of trust if real estate secures the loan.
What is the difference between a co-borrower and a guarantor?
A co-borrower signs the loan itself and owes the debt from day one, jointly and severally. A guarantor signs a separate promise to pay only if the borrower defaults. Lenders prefer co-borrowers for strength and guarantors for convenience; either should be documented at closing, not afterward.
Can I lend money to my own LLC with this agreement?
Yes, and you should document it exactly this formally. A written member loan with a market rate, a schedule, and actual payments preserves the line between you and the company, which matters for liability protection, taxes, and any future investors or lenders reviewing the books.
Which state's law governs the agreement?
The one you choose in the governing law clause, which is normally the state where the lender or borrower lives or where the loan is made. Pick a state with a real connection to the transaction: courts respect a reasonable choice and distrust forum shopping, and usury rules of the chosen state come with it.
What records should the lender keep during the loan?
The signed original agreement, the funding transfer record, a running payment ledger with dates and amounts, and every written communication about the loan, including reminders for late payments. If enforcement is ever needed, that file is the entire case.