What is Accrued Interest? (With Examples & Mortgage Impact)

Whether you’re a borrower managing a mortgage, an investor holding bonds, or simply trying to make sense of your bank statement, accrued interest is one of those financial concepts that quietly affects nearly every financial product you own. Understanding it clearly can save you money, prevent surprises, and make you a sharper financial decision-maker.

This guide breaks down exactly what accrued interest is, how it works with real examples, and what it means specifically for Canadian mortgage holders in 2026.

Table of Contents

1. What Is Accrued Interest?
2. How Is Accrued Interest Calculated?
3. What Is Accrued Interest With Example — Real-World Scenarios
4. Accrued Interest vs Simple Interest vs Compound Interest
5. Accrued Interest in Mortgages — What Canadian Homeowners Must Know
6. Accrued Interest on Bonds and Investments
7. Accrued Interest in Accounting — How Businesses Record It
8. Accrued Interest and Taxes in Canada
9. How to Reduce Accrued Interest on Your Mortgage
10. Frequently Asked Questions
11. Key Takeaways

1. What Is Accrued Interest?

Accrued interest is the amount of interest that has accumulated on a loan, bond, or deposit over a specific period of time — but has not yet been paid or received.

Think of it this way: interest doesn’t wait for your payment due date to start building. From the moment money is borrowed or invested, interest begins accumulating every single day. The portion of that interest that has built up since the last payment was made — but hasn’t been settled yet — is what we call accrued interest.

The word “accrue” itself means to accumulate gradually over time. So accrued interest is simply interest that is growing in the background, whether or not anyone has written a cheque yet.

Accrued Interest Can Work in Two Directions

As a borrower: Accrued interest is the interest building up on your loan that you owe to the lender. It represents a liability — money you will need to pay.

As an investor or lender: Accrued interest is the interest you’ve earned on an investment or loan you’ve extended but haven’t yet received. It represents an asset — money owed to you.

This dual nature is fundamental to understanding why accrued interest matters in both personal finance and business accounting.

Where You Encounter Accrued Interest

Accrued interest appears across virtually every financial product:

Financial Product	Accrued Interest Role
Mortgage	Interest building between monthly payments
Personal loan	Daily interest accumulating on outstanding balance
Credit card	Interest accruing on unpaid balances
Government bonds	Interest earned between coupon payment dates
Corporate bonds	Interest accumulated between payment periods
GICs and term deposits	Interest earned but not yet paid out
Student loans	Interest accruing during repayment period
Lines of credit	Daily interest on drawn balance

2. How Is Accrued Interest Calculated?

The formula for calculating accrued interest is straightforward, though the inputs vary depending on the type of financial product.

The Standard Accrued Interest Formula

Accrued Interest = Principal × Annual Interest Rate × (Days Elapsed ÷ Days in Year)

Breaking down each component:

• Principal — the outstanding balance on which interest is being calculated
• Annual Interest Rate — the stated yearly interest rate (expressed as a decimal)
• Days Elapsed — the number of days since the last interest payment or since the loan began
• Days in Year — typically 365 (or 360 for some financial instruments, particularly in the United States)

Day Count Conventions

Different financial instruments use different day count methods, which affects the accrued interest calculation:

Convention	Used In	How It Works
Actual/365	Canadian mortgages, most loans	Actual days elapsed ÷ 365
Actual/360	Some bonds, US money markets	Actual days elapsed ÷ 360
30/360	Corporate bonds	Assumes 30-day months, 360-day year
Actual/Actual	Government bonds	Actual days ÷ actual days in the year

For most Canadian mortgage and personal loan calculations, the Actual/365 convention applies — meaning you divide the actual number of days that have passed by 365.

3. What Is Accrued Interest With Example — Real-World Scenarios

Understanding what is accrued interest with example is the fastest way to make this concept concrete. Here are several practical scenarios across different financial products.

Example 1: Accrued Interest on a Personal Loan

Scenario: You have a personal loan with an outstanding balance of $10,000 at an annual interest rate of 6%. Your last payment was made 30 days ago.

Calculation:

• Principal: $10,000
• Annual rate: 6% = 0.06
• Days elapsed: 30
• Days in year: 365

Accrued Interest = $10,000 × 0.06 × (30 ÷ 365)
Accrued Interest = $10,000 × 0.06 × 0.0822
Accrued Interest = $49.32

After 30 days, $49.32 in interest has accrued on your loan. This is what you owe in interest for that period, in addition to any principal repayment.

Example 2: Accrued Interest on a Canadian Mortgage

Scenario: You have a mortgage with an outstanding balance of $450,000 at an annual interest rate of 4.89%. Your payments are monthly, and 15 days have passed since your last payment.

Calculation:

• Principal: $450,000
• Annual rate: 4.89% = 0.0489
• Days elapsed: 15
• Days in year: 365

Daily interest rate = 0.0489 ÷ 365 = 0.000134

Accrued Interest = $450,000 × 0.000134 × 15
Accrued Interest = $903.29

After just 15 days — halfway through your payment cycle — your mortgage has already accrued over $900 in interest. This illustrates why the vast majority of early mortgage payments go toward interest rather than principal.

Example 3: Accrued Interest on a Bond

Scenario: You purchase a $50,000 Government of Canada bond with a 5% annual coupon rate. The bond pays interest semi-annually (every 6 months). You buy the bond 60 days after the last coupon payment date.

When you buy a bond between coupon payment dates, you must pay the seller the accrued interest they’ve earned since the last payment — because the next full coupon payment will go entirely to you, the new owner.

Calculation:

• Face value: $50,000
• Annual coupon rate: 5% = 0.05
• Annual coupon amount: $50,000 × 0.05 = $2,500
• Days elapsed since last coupon: 60
• Days in coupon period: 182 (half of 365)

Accrued Interest = $2,500 × (60 ÷ 365)
Accrued Interest = $2,500 × 0.1644
Accrued Interest = $411.00

You would pay the seller $411.00 in accrued interest on top of the bond’s market price. When the next coupon of $1,250 (semi-annual) arrives in 4 months, you’ll receive the full amount — effectively being reimbursed the $411 and earning the remaining $839 for the 4 months you actually held the bond.

Example 4: Accrued Interest on a GIC (Guaranteed Investment Certificate)

Scenario: You invest $25,000 in a 1-year GIC at 4.5% interest. The GIC pays interest at maturity. After 8 months, you want to know how much interest has accrued.

Calculation:

• Principal: $25,000
• Annual rate: 4.5% = 0.045
• Days elapsed: 243 (approximately 8 months)
• Days in year: 365

Accrued Interest = $25,000 × 0.045 × (243 ÷ 365)
Accrued Interest = $25,000 × 0.045 × 0.6658
Accrued Interest = $748.98

After 8 months, $748.98 of interest has accrued in your GIC — but you won’t receive it until the 12-month term ends at maturity. This is a perfect illustration of interest that has accrued but not yet been paid out.

Example 5: Accrued Interest on a Line of Credit

Scenario: You have a home equity line of credit (HELOC) with a $30,000 outstanding balance at a variable rate of prime + 0.50%. Assume current prime is 5.20%, making your rate 5.70%. Interest on your HELOC is calculated daily and charged monthly.

Daily accrued interest = $30,000 × (0.057 ÷ 365)
Daily accrued interest = $30,000 × 0.0001562
Daily accrued interest = $4.68 per day

Monthly accrued interest (30 days) = $4.68 × 30 = $140.41

This $140.41 accrues silently each month. Many HELOC holders are surprised when their minimum payment barely covers the accrued interest — leaving their principal balance virtually unchanged.

4. Accrued Interest vs Simple Interest vs Compound Interest

These three terms are related but distinctly different — and confusing them is one of the most common mistakes in personal finance.

Simple Interest

Simple interest is calculated only on the original principal amount. It does not factor in previously accumulated interest. The formula is:

Simple Interest = Principal × Rate × Time

Simple interest is commonly used for short-term loans, treasury bills, and some personal loans. It is straightforward and borrower-friendly because unpaid interest does not itself earn interest.

Compound Interest

Compound interest is calculated on the principal plus any previously accrued and unpaid interest. This means interest earns interest — which is powerful for investors but expensive for borrowers.

Example of compounding impact:

• $10,000 at 6% simple interest for 5 years = $3,000 in interest
• $10,000 at 6% compound interest (annually) for 5 years = $3,382 in interest

The difference grows dramatically over longer periods and higher balances — which is why compound interest is the central force behind both wealth building and debt spirals.

Where Accrued Interest Fits In

Accrued interest is not a type of interest calculation — it is a snapshot in time. It simply refers to the amount of interest (whether simple or compound) that has accumulated during a period but has not yet been paid or received.

Concept	What It Describes
Simple interest	Method of calculating interest on principal only
Compound interest	Method where unpaid interest earns additional interest
Accrued interest	The accumulated unpaid interest at a specific point in time

In Canadian mortgages specifically, interest is compounded semi-annually but calculated daily — a unique structure that directly affects your accrued interest at any given moment.

5. Accrued Interest in Mortgages — What Canadian Homeowners Must Know

For most Canadians, the mortgage is where accrued interest has the greatest real-world financial impact. Understanding how it works in this context is essential for every homeowner.

How Canadian Mortgages Accrue Interest

By law in Canada, federally regulated lenders must compound mortgage interest semi-annually — not monthly as is common in the United States. This is actually beneficial to Canadian borrowers compared to monthly compounding, as it results in slightly less interest accumulating over time.

However, while interest is compounded semi-annually, it accrues daily. This means:

• Every single day, interest is building on your outstanding principal balance
• At the end of each payment period, the accrued interest is collected through your regular payment
• Any portion of your payment above the accrued interest goes toward reducing your principal

The Interest-Heavy Early Years

In the early years of a Canadian mortgage, the overwhelming majority of each payment covers accrued interest — with very little going toward principal. This is why:

Example: On a $500,000 mortgage at 5% over 25 years with monthly payments of approximately $2,908:

Payment Period	Interest Portion	Principal Portion
Month 1	~$2,083	~$825
Year 5	~$1,900	~$1,008
Year 10	~$1,660	~$1,248
Year 15	~$1,370	~$1,538
Year 20	~$1,010	~$1,898
Year 25	~$12	~$2,896

In Month 1, roughly 72% of your mortgage payment goes to accrued interest. Only in the latter half of your amortization does the balance tip toward principal repayment.

Accrued Interest When You Break Your Mortgage

When you break a mortgage early — whether to refinance, sell your home, or switch lenders — the outstanding accrued interest becomes part of your mortgage payout amount, along with the principal balance and any applicable penalty.

Payout Amount = Outstanding Principal + Accrued Interest to Payout Date + Prepayment Penalty

This is why the exact day you close a sale or refinance matters financially — every additional day you carry the mortgage adds to the accrued interest component of your payout.

Accrued Interest on Renewal

When your mortgage term expires and you renew, your lender calculates the accrued interest up to the renewal date as part of resetting the mortgage. If your renewal date falls on a weekend or holiday and the actual transfer happens a few days later, accrued interest for those extra days is also added to your outstanding balance.

Accrued Interest and Missed Payments

If you miss a mortgage payment in Canada, the unpaid amount — including the accrued interest that your payment was supposed to cover — continues to accrue additional interest. Depending on your mortgage agreement, this missed interest may be added to your principal (a process called negative amortization), causing your mortgage balance to grow rather than shrink.

This is one of the most financially damaging consequences of missed mortgage payments and should be avoided at all costs.

6. Accrued Interest on Bonds and Investments

For Canadian investors, accrued interest is a critical concept when buying or selling bonds between coupon payment dates — and it has direct tax implications.

How Bond Accrued Interest Works

When a bond is purchased between coupon dates, the buyer pays the seller the accrued interest that has built up since the last coupon payment. This compensates the seller for the time they held the bond and earned interest — even though the next coupon cheque will go entirely to the new buyer.

Why this matters: The accrued interest paid on bond purchases is treated differently from capital gains for Canadian tax purposes — it is deductible as interest expense in some circumstances. This distinction matters significantly for investors managing taxable portfolios.

Accrued Interest on GICs and Savings Products

For GICs and savings accounts that pay interest at maturity or annually, accrued interest represents money you’ve earned but not yet received. The Canada Revenue Agency (CRA) requires you to report accrued interest on anniversary-based investments annually — even if you haven’t physically received the cash.

This means you may owe tax on accrued interest before you’ve actually collected it — a cash flow consideration worth planning for.

7. Accrued Interest in Accounting — How Businesses Record It

For business owners, accountants, and anyone studying finance, accrued interest has a specific and important role in bookkeeping. It is a core concept under the accrual basis of accounting — the standard required by GAAP (Generally Accepted Accounting Principles) and IFRS (International Financial Reporting Standards).

The Accrual Principle

Under accrual accounting, revenues and expenses are recorded when they are earned or incurred — not when cash changes hands. This means:

• A business that has borrowed money must record interest expense as it accrues, even if no payment has been made yet
• A business that has lent money or holds interest-bearing investments must record interest income as it accrues, even if payment hasn’t been received

Journal Entries for Accrued Interest

As a borrower (accrued interest expense):

When interest accrues on a business loan:

• Debit: Interest Expense (income statement — increases expense)
• Credit: Accrued Interest Payable (balance sheet — increases liability)

When the interest is actually paid:

• Debit: Accrued Interest Payable (reduces liability)
• Credit: Cash (reduces asset)

As a lender or investor (accrued interest income):

When interest accrues on a loan extended or investment held:

• Debit: Accrued Interest Receivable (balance sheet — increases asset)
• Credit: Interest Income (income statement — increases revenue)

When interest is received:

• Debit: Cash (increases asset)
• Credit: Accrued Interest Receivable (reduces asset)

Why It Matters for Financial Statements

Accrued interest payable appears as a current liability on a company’s balance sheet — representing interest owed but not yet paid. Accrued interest receivable appears as a current asset — representing interest earned but not yet collected.

Failing to record accrued interest correctly distorts both the income statement (by understating expenses or income) and the balance sheet (by misrepresenting liabilities or assets). Auditors pay close attention to whether companies are accurately recording accrued interest at period-end.

8. Accrued Interest and Taxes in Canada

The Canada Revenue Agency has specific rules about when and how accrued interest must be reported — and these rules are often misunderstood by individual investors and small business owners.

The Anniversary Rule for Investments

For interest-bearing investments with terms longer than one year (such as multi-year GICs or compound interest savings bonds), the CRA requires you to report accrued interest income annually — specifically on each anniversary of the investment’s acquisition date.

This means even if your 3-year GIC only pays out at maturity, you must report and pay tax on the interest that accrued in Year 1 during your Year 1 tax return — even though you haven’t touched that money.

Planning implication: Hold long-term GICs inside a TFSA or RRSP wherever possible to shield accrued interest from annual taxation.

Deductibility of Accrued Interest Expense

For businesses and investors who borrow money for income-producing purposes, accrued interest expense is generally tax-deductible in the year it accrues — not just when it’s paid. This is an important distinction for year-end tax planning.

Example: If you draw on a line of credit in December to purchase income-producing investments, the accrued interest for December is deductible in that tax year — even if the payment isn’t made until January.

Accrued Interest on Bond Purchases

When you buy a bond and pay accrued interest to the seller, the CRA allows you to deduct that accrued interest paid as an offsetting amount against the interest income you’ll receive in the next coupon payment. This prevents you from being taxed on interest income that was effectively earned by someone else (the previous bond holder).

9. How to Reduce Accrued Interest on Your Mortgage

For Canadian mortgage holders, reducing the amount of interest that accrues over the life of your mortgage is one of the highest-return financial strategies available. Here’s how to do it effectively.

Make Accelerated Bi-Weekly Payments

Instead of making 12 monthly payments per year, accelerated bi-weekly payments mean you make 26 half-payments — equivalent to 13 full monthly payments. The extra payment goes directly to principal, reducing the balance on which interest accrues every subsequent day.

Impact on a $500,000 mortgage at 5% over 25 years:

• Monthly payments: Pay off in 25 years, total interest approximately $372,000
• Accelerated bi-weekly: Pay off in approximately 22 years, total interest approximately $320,000
• Interest saved: approximately $52,000

Make Annual Lump-Sum Prepayments

Most Canadian closed mortgages allow annual prepayments of 10%–20% of the original principal without penalty. Every dollar paid against your principal directly reduces the balance on which interest accrues for the remaining amortization.

Example: A $10,000 lump-sum prepayment in Year 1 of a $500,000 mortgage at 5% reduces your balance to $490,000. The daily accrued interest on $490,000 is meaningfully lower than on $500,000 — and that difference compounds over 25 years.

Increase Your Regular Payment Amount

Many lenders allow you to increase your regular payment amount by 10%–20% per year without penalty. Increasing your payment above the required minimum means more money hits your principal faster — shrinking the base on which interest accrues.

Choose the Right Payment Frequency

Payment frequency affects how quickly you reduce the principal balance that generates accrued interest:

Payment Frequency	Annual Payments	Interest Saved vs Monthly
Monthly	12	Baseline
Semi-monthly	24	Minimal
Bi-weekly	26	Significant
Accelerated bi-weekly	26 (higher amount)	Maximum
Weekly	52	Similar to bi-weekly
Accelerated weekly	52 (higher amount)	Maximum

Negotiate a Lower Rate at Renewal

Reducing your interest rate directly reduces the amount that accrues each day. Even a 0.25% reduction on a $400,000 balance saves approximately $1,000 in accrued interest per year — every year until your mortgage is paid off. This is why renewal negotiation is so financially important.

10. Frequently Asked Questions

What is accrued interest in simple terms?

Accrued interest is interest that has built up on a loan or investment over time but hasn’t been paid or received yet. If you borrow money, accrued interest is what you owe but haven’t paid. If you’ve lent money or hold an interest-bearing investment, accrued interest is what you’ve earned but haven’t received. It grows every day until a payment is made.

Is accrued interest an asset or a liability?

It depends on your position. For a borrower, accrued interest is a liability — you owe it to the lender. For a lender or investor, accrued interest is an asset — the borrower or issuer owes it to you. On a balance sheet, accrued interest payable appears under current liabilities, while accrued interest receivable appears under current assets.

Does accrued interest get added to the principal?

Not automatically — but it can. In normal loan structures, accrued interest is collected through regular payments before it is ever added to principal. However, if a payment is missed or a loan goes into a negative amortization structure, unpaid accrued interest can be capitalized (added) to the principal balance. This is particularly important to avoid on mortgages, as it causes the outstanding balance to grow rather than shrink.

How does accrued interest affect my mortgage payout when I sell my home?

When you sell your home and discharge your mortgage, the payout amount includes your outstanding principal plus all accrued interest up to the exact date of discharge. Since interest accrues daily, the later in a payment cycle your sale closes, the more accrued interest you’ll owe. This is why lawyers calculate mortgage payouts to the exact closing date rather than the next scheduled payment date.

What is the difference between accrued interest and interest payable?

These terms are often used interchangeably, but there is a technical distinction in accounting. Accrued interest is the broader concept — interest that has accumulated but not yet been paid or received. Interest payable is a specific balance sheet liability account used to record accrued interest that is owed by a borrower. In practice, most people use both terms to mean the same thing: interest that has built up but hasn’t been settled yet.

Can I be taxed on accrued interest I haven’t received yet?

Yes — in Canada, the CRA requires investors to report accrued interest annually on multi-year interest-bearing investments such as compound GICs. Even if you haven’t received the money, you are required to report the interest that accrued during the year on your T1 return. This is why holding these types of investments inside a TFSA or RRSP is generally advisable — to defer or eliminate the annual tax obligation on accrued interest.

How is accrued interest different from interest expense?

Interest expense is the total cost of borrowing recorded on an income statement for a given period. Accrued interest is the unpaid portion of that interest at a specific point in time. All accrued interest eventually becomes interest expense once the period closes — but not all interest expense is accrued (some may already have been paid during the period). In accounting terms, accrued interest is the balance sheet representation of unpaid interest expense.

11. Key Takeaways

What is accrued interest? It is interest that has accumulated on a loan or investment over a period of time but has not yet been paid or received. It grows every day and is settled through regular payments or at maturity.

The formula: Accrued Interest = Principal × Annual Rate × (Days Elapsed ÷ 365). This applies to mortgages, personal loans, bonds, GICs, and lines of credit.

In mortgages: Accrued interest is the dominant component of early mortgage payments. In Canada, interest compounds semi-annually but accrues daily — meaning your balance generates interest charges every single day. Making accelerated payments and lump-sum prepayments are the most effective ways to reduce accrued interest over your amortization.

In investments: Accrued interest on bonds must be paid to the seller when purchasing between coupon dates. On GICs and savings products, accrued interest must be reported to the CRA annually even if not yet received.

In accounting: Accrued interest appears on the balance sheet as either a current liability (interest payable) or current asset (interest receivable), depending on whether you are the borrower or lender.

The tax angle: The CRA taxes accrued interest on multi-year investments annually under the anniversary rule. Interest expense accrued on income-producing borrowing is deductible in the year it accrues — not when it is paid.

The more clearly you understand accrued interest, the better equipped you are to manage your mortgage, optimize your investment strategy, and make informed financial decisions at every stage of your financial life.

Disclaimer: This article is for informational and educational purposes only and does not constitute financial, tax, or investment advice. Interest calculations, tax rules, and mortgage terms are subject to change. Always consult a licensed financial advisor, mortgage professional, or tax specialist before making any financial decisions.