Personal loans between family members and friends are one of the most common forms of private lending in Ontario — and one of the most frequently underdocumented. Whether you are lending your adult child money for a down payment, helping a sibling start a business, or formalizing a loan between business partners, a written loan agreement is essential for tax planning, dispute prevention, and estate administration. This guide walks through the legal requirements and practical considerations for personal loan agreements in Ontario.

The Criminal Code Interest Cap: 60% Annual Rate

Section 347 of Canada's Criminal Code makes it a criminal offence to enter into an agreement to receive interest at a criminal rate — defined as an effective annual rate exceeding 60% per year. This ceiling applies to all private lending, regardless of the lender's relationship to the borrower or the purpose of the loan.

The calculation of "interest" under s. 347 is broader than just the stated interest rate — it includes fees, commissions, fines, penalties, and any other charges or expenses paid or payable in connection with the advance of credit. A loan that charges a low interest rate but high fees can still exceed the criminal rate when all charges are included in the annual rate calculation.

Important: The 60% criminal rate is a hard ceiling, not a recommended rate. For private family loans, rates far below this level are appropriate — the CRA prescribed rate (for income-splitting loans) or the prime-plus-a-modest-margin is more typical. The criminal rate provision is primarily designed to address predatory lending, not family loans.

Family Loans and CRA Prescribed Interest Rates

When lending money to a family member — particularly a lower-income family member — at a below-market interest rate, the Canada Revenue Agency's income-splitting rules may attribute the investment income earned by the lower-income borrower back to the higher-income lender. To avoid attribution, the loan must bear interest at least at the CRA's prescribed rate in effect at the time the loan is made.

The CRA prescribed interest rate is set quarterly. Historically low (as low as 1% during low interest rate periods), the rate has increased in recent years as interest rates rose. Key points:

Tax Planning Tip: Locking in a loan at the prescribed rate when rates are low creates a planning opportunity — the prescribed rate is fixed for the life of the loan, even as market rates rise. Families who established prescribed rate loans during low-rate periods can maintain those favourable rates indefinitely, preserving the income-splitting benefit.

Loan Structure: Demand vs. Term

Ontario personal loans are structured as either demand or term (installment) loans. The choice has significant practical implications:

A demand loan is repayable immediately upon the lender's written demand, with no fixed repayment schedule. Demand loans offer maximum flexibility for the lender but can create uncertainty for the borrower's financial planning. They are common for shareholder loans, intra-family loans that are expected to be repaid over flexible timeframes, and bridge loans.

A term loan specifies fixed repayment amounts and dates — monthly, quarterly, or annual installments over a defined period (e.g., 5 years). Term loans provide both parties with a clear payment schedule and are better suited for larger loans where the borrower needs time to repay from investment returns or income.

Important: The Limitations Act, 2002 (Ontario) applies differently to demand and term loans. For a demand loan, the limitation period generally starts when demand is made. For a term loan, it starts when each missed payment becomes overdue. Always consider how the structure interacts with Ontario's 2-year limitation period when deciding on loan structure.

Essential Terms of a Personal Loan Agreement

A properly documented Ontario personal loan agreement should include:

Personal Guarantees

When lending to a corporation or a borrower whose creditworthiness you are uncertain about, a personal guarantee from a creditworthy individual (often a spouse, parent, or business partner) provides additional security. A guarantor promises to pay the debt if the primary borrower defaults.

In Ontario, guarantees must be in writing and signed by the guarantor to be enforceable. Key guarantee terms include:

Enforcement in Ontario Courts

When a personal loan goes into default in Ontario, the lender has several enforcement options:

Post-judgment enforcement options include garnishment of bank accounts and wages, writs of seizure and sale against real property, and examination of the debtor in aid of execution.