A loan agreement should eliminate guesswork about who owes what, how repayment works, and what happens if payments stop. A signed document is useful evidence, but a generic template can't guarantee that every clause is enforceable.

This guide covers ordinary private and small-business loans in the United States. Loans involving real estate, vehicle titles, securities, payday lending, multiple states, or a commercial lender may require additional documents and rules. This is general information, not legal advice.

What a Loan Agreement Should Decide

Before drafting, make sure the contract answers these questions:

A promissory note is generally the borrower's written promise to repay. A loan agreement can be broader, covering funding conditions, collateral, notices, default procedures, and other duties. One document may serve both purposes, but a secured loan often needs a separate security agreement or lien document.

What Law Controls a U.S. Loan Contract?

There isn't one nationwide form that works for every loan. The contract, applicable state law, and any federal consumer-credit rules all matter.

State contract, lending, and collection laws

State law may affect:

• Whether a writing or particular signature is required
• Maximum interest rates and late fees
• Prepayment penalties
• Required notices before acceleration or collection
• Statutes of limitation
• Court procedures and judgment collection
• Rules for collateral, liens, and repossession

Don't assume that a loan above $500 automatically falls under a universal writing requirement. The $500 threshold often associated with the Uniform Commercial Code concerns certain sales of goods, not every personal loan. A written, signed agreement is still the safer choice for a loan of any meaningful amount.

Usury limits also vary by state and may depend on the loan type, lender, borrower, and whether the lender is a bank or other regulated institution. Check the law where the transaction is governed before choosing an interest rate.

Federal consumer-credit disclosures

Regulation Z, which implements the Truth in Lending Act, isn't a universal checklist for private loans. Coverage depends on facts such as the creditor's status, the loan's purpose, the finance charge, and applicable exemptions. A business that regularly extends consumer credit may have disclosure duties that don't apply to a friend making one occasional loan.

Review the current Regulation Z text in 12 CFR Part 226 if a business is lending to a consumer. Don't assume that a downloaded contract replaces disclosures required by federal or state law.

Secured transactions

For collateral consisting of personal property, state versions of UCC Article 9 may govern how a security interest is created and protected. The U.C.C. Article 9 provisions address subjects such as attachment, perfection, filing, priority, and notice before collateral is sold.

A loan agreement alone may not perfect a security interest. Depending on the collateral, the lender may need a properly drafted security agreement, a UCC filing, possession, control, or a title-lien process. Real estate generally requires a mortgage or deed of trust and recording, not just a paragraph in a basic loan contract.

How to Draft a Loan Agreement Step by Step

1. Identify each party by legal name

Use the person's full legal name rather than a nickname. Include a current address for notices.

For a business, identify the exact legal entity and state of formation. Confirm that the person signing has authority to bind it. If there's a co-borrower, guarantor, or co-signer, identify that person separately and explain the obligation.

Avoid relying on a phone number or email address as the only identification. Those details can change and may not establish who signed the agreement.

2. State the principal and funding details

Write the principal in both numbers and words, such as $10,000 (ten thousand dollars). State:

• The date the money will be advanced
• Whether funds will be sent by check, bank transfer, or another method
• Whether the borrower has already received the funds
• Whether any fee is withheld from the amount delivered
• The permitted use of the money, if that matters to the lender

If the lender advances $10,000 but deducts a $200 fee, the contract should distinguish the gross principal, the amount delivered, and how the fee is treated. Keep a bank record, receipt, or signed acknowledgment of funding.

3. Set a precise repayment schedule

Specify the first payment date, recurring due date, payment amount, number of installments, and final maturity date. State what happens if the due date falls on a weekend or holiday.

A schedule should also explain:

• Where and how payment must be made
• Whether a payment is considered made when sent or when received
• How payments are applied to permitted fees, interest, and principal
• Whether a final balloon payment is due
• Whether the borrower may pay early
• How the lender will provide a payoff amount

Don't write "repay when able" or "monthly payments until paid" without dates and amounts. Those phrases invite disagreement and may make enforcement harder.

4. Define interest and fees

State whether the rate is fixed or variable. For a variable rate, identify the index, margin, adjustment dates, caps, and floor. A fixed rate is usually easier to administer in a private loan.

The contract should say:

• The annual rate
• Whether interest is calculated on unpaid principal
• The calculation period, such as monthly or daily
• Whether unpaid interest may be added to principal
• The late-fee amount and when it applies
• Any origination, processing, or other fees
• Whether each charge is subject to applicable law

If the loan is interest-free, say so directly: "The interest rate is 0%, and no interest will accrue on the unpaid principal."

Don't describe a rate as an "APR" unless it's been calculated and disclosed in the way required for the transaction. An annual interest rate and an APR aren't always the same, particularly when fees are charged.

5. Add prepayment terms

Say whether the borrower may pay some or all of the balance early. If there's no prepayment penalty, state that clearly.

If a penalty is intended, verify that the applicable law allows it and describe the calculation in plain language. Avoid a vague clause such as "a reasonable prepayment fee."

6. Define default, notice, and cure

List specific events that can trigger default. A common example is a payment remaining unpaid for a stated number of days after its due date. Other events may include unauthorized transfer of collateral or a false material statement, but each should be drafted carefully.

The clause should identify:

• What event constitutes default
• Whether written notice is required
• How many days the borrower has to cure
• When the lender may accelerate the remaining balance
• Which remedies are available
• Whether collection costs or attorney fees may be recovered, subject to law

Acceleration means declaring the remaining balance immediately due. It shouldn't be presented as automatic unless the agreement and applicable law support that result.

7. Describe collateral in a separate, careful section

For a secured loan, identify the property precisely. A vehicle description might include the year, make, model, vehicle identification number, and title information. Equipment may need a serial number, location, and detailed description.

The agreement should address:

• Who owns the collateral
• Existing liens
• Where the property will be kept
• Insurance and maintenance
• Whether the borrower may sell or transfer it
• The lender's right to take lawful steps to protect its interest

A sentence saying "all of the borrower's property is collateral" may be too broad or ineffective in a particular transaction. The lender may also need to file or record a document to establish priority against other creditors. Don't promise repossession merely because the contract uses the word "secured." Collection must follow the applicable law and any required notices.

8. Add general contract terms

Useful administrative clauses cover:

• Notice addresses and permitted delivery methods
• Governing law and venue
• Written amendments only
• Severability if one clause is invalid
• No waiver from overlooking one late payment
• Assignment rights
• Counterparts and electronic signatures, if permitted
• Which document controls if a promissory note and loan agreement conflict

A governing-law clause doesn't necessarily override mandatory consumer protections or the law of another state connected to collateral or collection.

9. Review, sign, and store the documents

Check every number, date, name, and cross-reference. Each party should receive the same final version.

Have the parties sign and date the agreement. Witnesses or notarization may be required for certain documents or transactions, but don't assume a notary is universally necessary or sufficient. A notary generally confirms identity and the act of signing; the notary doesn't verify that the terms are fair or enforceable.

Store:

• The signed agreement and any promissory note
• Proof of the advance
• The payment schedule
• Receipts and account statements
• Written changes or payment arrangements
• Lien, filing, insurance, and release documents

Copyable Basic Loan Agreement Template

Use this outline as a starting point, then check it against the law and facts of the transaction. Remove options that don't apply and complete every bracketed field.

Date and parties

This Loan Agreement is dated [date] and is between [Lender's full legal name and address] and [Borrower's full legal name and address]. [Name of co-borrower, guarantor, or co-signer, if any] signs in the capacity stated below.

Loan and promise to repay

The Lender will advance $[amount] ([amount in words]) to the Borrower by [method] on or about [date]. The Borrower promises to repay the principal, interest, and permitted charges according to this Agreement.

Interest

Unpaid principal will bear interest at a fixed annual rate of [rate]%, calculated [daily/monthly] on the unpaid principal. [If applicable: The interest rate is 0%, and no interest will accrue.]

Payments

The Borrower will make [number] payments of $[amount] each, beginning on [date] and due on the [day] of each [month]. The remaining balance, including any permitted accrued amount, is due on [maturity date]. Payments must be made by [method] to [address or account instructions].

Payment application

To the extent permitted by law, each payment will be applied first to [permitted costs or late charges], then to accrued interest, and then to principal.

Prepayment

The Borrower may prepay all or part of the outstanding balance at any time [without a prepayment penalty / under the following lawful terms: ____]. The Lender will provide a payoff amount upon reasonable request.

Default and cure

A default occurs if [specific event]. After any notice and cure period required by this Agreement or applicable law, the Lender may exercise the remedies available under this Agreement and applicable law, including acceleration if permitted.

Collateral

The Borrower grants the Lender a security interest in the following collateral: [specific description]. Any separate security agreement, title-lien document, or filing required for the transaction will be completed as applicable.

Notices and other terms

Notices must be sent to the addresses stated above by [permitted method]. This Agreement may be amended only in a written document signed by the affected parties. The governing law is the law of [state], subject to any mandatory law that applies to the transaction.

Signatures

Lender: ____ Date: __
Borrower: __ Date: __
Co-borrower or guarantor: Date: __
Witness or notary, if required: ____

The template shouldn't be used unchanged for a mortgage, a real-estate-secured loan, a high-value business loan, or a transaction involving complicated collateral.

Secured and Unsecured Loan Agreements Compared

A secured loan isn't risk-free. A lender may have a lower-priority lien, find that the property is worth less than expected, or fail to complete the required perfection steps.

An unsecured lender can't simply take a borrower's car, wages, or other property after a missed payment. The lender must follow the agreement and applicable collection law.

How to Calculate Interest and Create a Payment Schedule

For a fixed-rate amortizing loan, a common payment formula is:

M = P × r × (1 + r)^n ÷ ((1 + r)^n − 1)

Here, P is the principal, r is the periodic interest rate, and n is the number of payments.

For example, a $10,000 loan at a 5% nominal annual rate over 24 monthly payments has:

• Monthly rate: 5% divided by 12
• Approximate monthly payment: $438.71
• First month's interest: about $41.67
• First month's principal reduction: about $397.04
• Approximate total interest: $529, before final rounding adjustments

The contract should match the method used to create the schedule. If the parties intend simple daily interest, a formula based on outstanding principal and elapsed days may be appropriate instead. Don't use a flat-interest calculation while describing the loan as an amortizing loan.

A spreadsheet can help, but both parties should review the first payment, final payment, total interest, and any fee. Monthly rounding may require a small adjustment to the last installment.

What to Do If the Borrower Stops Paying

Follow the contract rather than improvising:

1. Check the payment history and confirm the missed amount.
2. Review the notice, grace-period, and cure provisions.
3. Send a written notice identifying the missed payment, amount due, and deadline to cure.
4. Keep copies of messages, receipts, bank records, and the payment ledger.
5. Put any revised payment plan in a signed written amendment.
6. If the default continues, consider mediation, a lawyer, or the appropriate court.
7. For collateral, follow the applicable lien, notice, repossession, and sale procedures.

Small-claims dollar limits and eligible claims differ by state. A court judgment may be required before wage garnishment or certain asset-collection measures, and exemptions can limit what a creditor collects.

A secured lender shouldn't assume that a missed payment permits an immediate seizure. Self-help remedies may be restricted, and a collateral sale may require advance notice and commercially reasonable procedures under applicable law. An unsecured lender generally needs a legal claim and judgment before using judgment-collection tools.

Special Situations to Handle Carefully

Family and friends

Write the agreement even when the parties trust each other. State whether repayment is expected, what happens after a missed payment, and whether the lender may accept a modified amount. An interest-free or below-market family loan can also raise tax questions, so keep clear records and consult a tax professional before choosing the rate.

Co-signers and guarantors

Say whether the additional signer is a co-borrower, jointly responsible borrower, or guarantor. State when the lender may seek payment from that person and where notices must be sent. Don't assume that the label "co-signer" explains the legal obligation.

Business borrowers

Use the business's exact legal name and document the signer's authority. Identify whether the lender is relying on business assets, a personal guarantee, or both. A personal guarantee should be separately and clearly stated rather than hidden in a signature line.

Real estate or high-value collateral

A basic loan template isn't a substitute for a mortgage, deed of trust, commercial security agreement, title filing, or professional review. Recording errors and priority disputes can determine whether the lender can enforce the collateral.

Common Drafting Mistakes

• Using nicknames or an outdated address
• Writing the principal only in numbers
• Leaving the interest rate or payment dates vague
• Calling a loan "interest-free" while charging unexplained fees
• Adding a late fee without checking state limits
• Failing to describe a balloon payment
• Treating a template as proof that Regulation Z doesn't apply
• Assuming a notarized signature fixes an unlawful clause
• Calling a loan secured without completing filing or title steps
• Promising repossession without considering notice and breach-of-peace rules
• Changing payment terms through text messages without a signed amendment
• Failing to keep evidence that the money was actually advanced

Final Pre-Signing Checklist

Before money changes hands, confirm that:

• The parties' legal names and addresses are correct.
• The principal, funding date, and delivery method are documented.
• The interest and fee terms are complete and lawful.
• Every payment date and amount is listed.
• Prepayment and final-payment rules are clear.
• Default, notice, cure, and acceleration terms are consistent.
• Collateral documents and filings are ready, if applicable.
• The governing law and notice method are stated.
• Both parties have reviewed the same final version.
• Signed copies and funding records will be stored securely.

For a simple unsecured loan, this process can prevent many avoidable disputes. For a secured, high-value, business, real-estate, or cross-state transaction, have a qualified attorney review the documents before signing.