A handshake loan between friends or family members is one of the fastest ways to destroy a relationship. It’s not cynicism — it’s statistics. A 2023 Bankrate survey found that 46% of Americans who lent money to someone they know experienced a negative consequence, from lost funds to severed ties. The antidote isn’t refusing to lend. It’s treating the transaction with the same rigor a bank would, minus the bureaucracy. A well-drafted loan agreement protects both sides, and writing one is far less complicated than most people assume.
Why a Written Agreement Isn’t Optional
Verbal contracts are technically enforceable in most states — but try proving one in court. Without a written document, you’re left arguing “he said, she said” in front of a judge who has heard it a thousand times. A written loan agreement does three things simultaneously: it forces both parties to confront the real terms before money changes hands, it creates admissible evidence if things go wrong, and it gives both borrower and lender psychological permission to treat this as a business arrangement rather than an emotional favor.
There’s a tax reason too. The IRS considers any loan of $10,000 or more at below-market interest rates a potential gift. Under IRC Section 7872, if you don’t charge at least the Applicable Federal Rate (AFR), the IRS may impute interest — meaning you’ll owe income tax on interest you never actually collected. As of mid-2025, AFR rates are published monthly by the IRS and vary by loan term. Ignoring this doesn’t save anyone money; it just creates a tax headache for the lender.
The Essential Provisions — and Why Each One Matters
Identification of the Parties
Use full legal names, current addresses, and — if you’re willing — Social Security Numbers or at least driver’s license numbers. Vague identification makes enforcement difficult, especially if the borrower later moves out of state. If the borrower is an LLC or business entity, name the entity and the personal guarantor.
Loan Amount and Disbursement Method
State the exact principal amount. Specify how funds will be delivered — wire transfer, check, or direct deposit — and include the date of disbursement. Never hand over cash without a receipt. A traceable payment method is your first line of defense.
Interest Rate and APR Compliance
Every state has usury laws capping the maximum interest rate you can charge on a private loan. In Texas, the general limit is 10% for written agreements; in California, it’s 10% for personal loans unless the lender is a licensed broker. Charge more than the statutory maximum and a court can void the interest entirely — or in some states, the entire loan. Research your state’s usury ceiling before filling in this line.
At minimum, charge the AFR to avoid the IRS gift-tax imputation mentioned above. This protects the lender from phantom income and keeps the arrangement clean.
Repayment Schedule
Ambiguity here is where most private loans fail. Specify the payment amount, due date, frequency (monthly is standard), accepted payment methods, and the final maturity date. An amortization table attached as an exhibit removes all guesswork. If you’re offering a balloon payment structure — smaller payments with a large lump sum at the end — both parties need to understand the risk: the borrower may not have that lump sum when it comes due.
Prepayment Rights
Can the borrower pay off the loan early without penalty? Most private lenders should say yes. A prepayment penalty in a personal loan between acquaintances breeds resentment and rarely serves anyone’s interest.
Late Payment Penalties and Grace Periods
A five-day grace period is reasonable. After that, a flat late fee (e.g., $25) or a percentage of the missed payment (commonly 5%) creates accountability without being punitive. Be aware that excessive late fees can be challenged under state consumer protection statutes.
Default and Remedies
Define default clearly: missed payment after grace period, bankruptcy filing, material misrepresentation. Then spell out what happens next. Can the lender accelerate the full balance? Will you pursue mediation before litigation? Including a mandatory mediation clause before either party can file suit is smart — it’s cheaper, faster, and less relationship-destroying than court.
Security or Collateral
For larger loans, consider securing the debt with collateral — a vehicle title, a UCC financing statement on business assets, or even a deed of trust against real property. A secured loan gives the lender recourse beyond simply suing for breach of contract. If you take a security interest in a vehicle, file the lien with your state’s DMV. If real property is involved, record the deed of trust with the county recorder’s office. An unrecorded lien is nearly worthless.
Choice of Law and Jurisdiction
If the lender lives in Ohio and the borrower is in Florida, which state’s laws govern the agreement? Pick one and state it. Also specify the county where any lawsuit must be filed. Without this clause, you may end up litigating in an inconvenient — and expensive — forum.
Severability and Entire Agreement Clauses
Severability ensures that if one provision is struck down, the rest of the contract survives. The entire agreement clause prevents either party from later claiming, “But we also agreed to X over text message.” These are boilerplate, but they matter.
Promissory Note vs. Loan Agreement: Know the Difference
A promissory note is a one-sided promise by the borrower to repay. A loan agreement is a bilateral contract with obligations on both sides (lender promises to disburse; borrower promises to repay under stated terms). For most private loans, a promissory note is sufficient and simpler. But if the arrangement involves conditions on disbursement, multiple tranches of funding, or collateral, a full loan agreement is the better tool. When in doubt, use the more comprehensive document.
Tax Implications Neither Party Should Ignore
The lender must report interest income on their federal tax return, even from a family loan. If total interest received exceeds $600 in a year, you should issue a 1099-INT to the borrower — though the reporting obligation to the IRS exists regardless of amount. Borrowers cannot deduct interest paid on personal loans. The exception: if loan proceeds are used to purchase investment assets, the interest may be deductible as investment interest expense on Schedule A, subject to limitations.
If the borrower defaults and the lender writes off the debt, the lender can claim a non-business bad debt deduction — but only as a short-term capital loss on Schedule D. You’ll need to demonstrate that the debt was genuine (not a gift in disguise) and that you made reasonable efforts to collect. This is precisely where your written agreement becomes indispensable.
Mistakes That Gut an Otherwise Good Agreement
- No witnesses or notarization. While most states don’t require notarization for a loan agreement to be valid, a notarized document is significantly harder to challenge. At minimum, have one independent witness sign.
- Vague default language. “If the borrower doesn’t pay” isn’t specific enough. Define the number of missed or late payments that trigger default.
- Ignoring state usury limits. An unenforceable interest rate can void your entire claim to interest — or worse.
- Failing to document payments. Keep a running ledger. Have the borrower pay via check or electronic transfer so there’s a paper trail. Cash payments with no receipt are invisible to a court.
- Skipping the awkward conversation. The agreement is only as good as the honesty of the discussion that precedes it. Talk about what happens if the borrower loses their job, gets divorced, or simply can’t pay. Address it now, in writing, or address it later in court.
Make It Real: Your Next Steps
Draft the agreement using a reputable template from a source like LegalZoom, Rocket Lawyer, or your state bar association’s self-help resources — then customize every provision to fit your situation. For loans above $5,000, spend the $200–$500 to have a local attorney review the document. That’s cheap insurance against a five-figure loss. Both parties should keep signed originals. And here’s the hardest advice: if you can’t afford to lose the money entirely, don’t lend it. A loan agreement reduces risk — it doesn’t eliminate it. Lend what you can survive losing, document it like a professional, and you’ll protect both your finances and your relationship.
Disclaimer: The information provided in this article is for informational purposes only and should not be considered financial or legal advice. Laws and lending criteria vary significantly between states. We always recommend consulting with a qualified real estate attorney and financial advisor before entering into a property purchase or financial arrangement with another party.
