How Fractional Reserve Banking Works in Canada (And Why It Matters for Inflation, Debt, and Interest Rates)

Understanding Fractional Reserve Banking in Canada

When most people think about banks, they imagine a large vault somewhere holding piles of money. The assumption is that when you deposit your money into the bank, the bank keeps it safe, and when you want it back, they hand it to you.

The visualization is that if you give the bank a $100 bill, that $100 bill is put into a vault. When you come back for it later, you receive that same $100 bill back. However, that is not even remotely close to reality.

Banks are not primarily vaults for storing money. They are institutions designed to move money. More specifically, they are designed to lend money. The system that allows them to do this is called fractional reserve banking, and understanding how it works can dramatically change the way you think about money, debt, and interest.

The goal of this article is to explain, in simple terms, how fractional reserve banking works in Canada, the laws and institutions that govern it, and how it affects things like inflation and interest rates.

What Fractional Reserve Banking Actually Means

Here is a literal billion-dollar question, where does the money come from when banks issue a loan? Do banks lend out their own money? The answer is no, they do not. Banks exist to profit from the flow of money. Fractional reserve banking is the system that allows them to do it.

Fractional reserve banking simply means that banks only keep a fraction of the deposits they have available in reserve, while lending out the rest. Money in motion is what creates profits and banks are intimately aware of this fact.

When you deposit money into a bank account, that money does not just sit there waiting for you. Instead, the bank uses those deposits as the foundation for issuing loans. What you see is a number on a screen representing a liability for the bank. The bank owes you the exact sum of money that is shown in your account, but that money is not sitting in a vault with your name on it.

Here’s an example. Imagine you deposit $10,000 into your bank account. Instead of the bank keeping $10,000 of money on hand in the event you want to withdraw your money, the bank will only hold a small portion of that money in liquid reserves. The rest is used to fund loans. What that $10,000 represents to the bank is capital that can now be used to create a profit.

The bank will then lend out the majority of that $10,000 to other people requesting a loan. To mitigate the risk of a bad loan that can’t be repaid, they will spread out the loaned money to multiple parties. This significantly reduces the risk. Let’s say for example the bank lends out $9,000 of the $10,000 they have on hand. This means they are keeping $1,000 in reserve. The bank is hedging its bet that you will not want to withdraw all of your money at the same time, so there is no need to keep all of the money on hand. Distribute this method across tens of thousands of depositors and we again significantly reduce the risk to the bank.

Back to our example. The people who received the total of $9,000 in loans now spend that money. That spent money will inevitably end up in the account of the seller and the whole process repeats again.

This process continues throughout the banking system. Because of this, the original deposit ends up supporting a much larger amount of loans across the economy.

This is one of the main ways new money enters the financial system. The credit that is created by issuing the loans is quite literally creating additional money out of thin air.

Fractional Reserve Banking in Canada

It would make sense that there are laws governing what percentage of deposits must be kept on hand by banks to ensure the formation of new credit doesn’t get out of hand and to ensure banks are not over extended which could cause significant economic damage. Canada used to have formal reserve requirements; however, those requirements were eliminated in 1992.

Instead of requiring banks to hold a fixed percentage of deposits in reserve, Canada moved to a system based on capital requirements and liquidity rules. These rules are designed to ensure that banks remain financially stable even while lending out a large portion of deposits. You may think that a percentage-based system versus harder to understand capital requirements and liquidity rules would work better, but the big six Canadian banks (TD, RBC, BMO, CIBC, NB and Scotiabank) are among the most solid banking institutions in the world.

The governing body in Canada for banks is called the Office of the Superintendent of Financial Institutions (OSFI). Exactly how governing bodies regulate Canadian banks is outside the scope of this article. Its more important to note that there is a governing body and the lending rules are kept in check.

The Role of the Bank of Canada

While OSFI regulates the safety and stability of banks, the Bank of Canada plays a different role. The Bank of Canada is the country’s central bank, and its main responsibility is managing monetary policy. In simple terms, that means controlling inflation and maintaining stability in the financial system.

One of the main tools the Bank of Canada uses to do this is the overnight lending rate. The overnight rate is the interest rate that banks charge each other for very short-term loans. Banks regularly lend money to each other overnight to manage their daily cash balances.

At the end of each business day, some banks may have excess funds while others may be slightly short. The overnight lending market allows them to balance those positions. The Bank of Canada sets a target overnight rate and uses financial tools to keep the market rate close to that target. This rate may sound technical, but it has a massive impact on the entire economy. It is the overnight lending rate that impacts the interest rates that banks charge on borrowed money.

How the Overnight Rate Affects Interest Rates

When the Bank of Canada raises the overnight rate, it becomes more expensive for banks to borrow money. Banks then pass that cost along to consumers by raising their prime lending rate. The prime rate is the benchmark interest rate used for many common loans and is often advertised by the bank. You will likely see on a mortgage that your rate is Prime + x% or Prime - x%. This is what the bank is referring to. Typically, the prime rate sits about two to two and a half percent above the overnight rate, although the exact spread can vary.

So when the Bank of Canada increases the overnight rate, borrowing becomes more expensive throughout the economy. When the overnight rate is lowered, borrowing becomes cheaper. This is how the central bank influences economic activity. By raising or lowering the cost of borrowing, they are artificially influencing the spending behaviour of the public by making access to borrowed money either cheaper or more expensive.

How Fractional Reserve Banking Contributes to Inflation

Because banks lend out deposits, the total amount of money circulating in the economy grows as lending increases. When loans are issued, new deposits are effectively created. This increases the supply of money available for spending.

If the supply of money grows faster than the supply of goods and services in the economy, prices tend to rise. This is one of the primary ways inflation develops.

To manage this, the Bank of Canada adjusts interest rates. When inflation is rising too quickly, the Bank of Canada raises interest rates to slow borrowing and spending. When the economy is slowing down, the Bank of Canada lowers interest rates to encourage borrowing and stimulate economic activity. In other words, interest rates act like a dial that controls how quickly money is being created through lending.

Why Banks Are So Profitable

Once you understand how fractional reserve banking works, it becomes easier to see why banks are among the most profitable institutions in the country.

Banks collect deposits from individuals and businesses and pay relatively small amounts of interest to those deposits. They then lend that money out at higher interest rates. The difference between what banks pay depositors and what they charge borrowers is known as the interest spread. For example, they may pay an interest rate of 1.25% on a savings account, but then lend that money out at 8-9% to someone else. The difference in rates is their profit.

Across millions of loans — mortgages, credit cards, car loans, and lines of credit — that spread becomes extremely profitable. As consumer debt grows, so does the amount of interest flowing into the banking system. This is called interest volume. Banks historically make more money when interest rates are low because the total volume of loans increases.

This is one of the reasons Canadian banks regularly report record profits during periods when household borrowing increases.

Why Understanding This Matters

Most people interact with the banking system in two roles: the depositor and the borrower. The problem is that the average person when using a bank has no way to connect those two functions. What this means is that your savings are directly financing your loans. Literally. Then the bank lives very comfortably off the profit that is created.

Understanding fractional reserve banking helps explain why so much money flows toward financial institutions through interest payments. This is how the average person can spend upwards of 30-35% of their after tax income on interest alone. The bank is exploiting the rules of the economy to take your savings, and fund your loans. However, once you understand the problem, you will know what to do.

How we finance things in life matters just as much as how we invest.

Once you understand how money moves through the banking system, you can start asking better questions about how to position yourself within it.

And that’s where real financial education begins.