How Interest Compounds on a Reverse Mortgage

"How much will I actually owe in ten years?" This is the question that keeps Ontario homeowners up at night when considering a reverse mortgage — and it deserves a clear, honest answer. Compound interest is the engine that drives a reverse mortgage balance upward, and understanding exactly how it works is the difference between making an informed decision and being blindsided by the numbers later.

Rick Sekhon believes every client should see the full projection before signing anything. This guide explains compound interest in plain language, shows you exactly how it accrues on a reverse mortgage month by month, provides detailed projections at three different interest rates over four time horizons, and demonstrates how home appreciation and voluntary payments can offset the growth. No sugar-coating — just the math.

Simple Interest vs Compound Interest

Before examining reverse mortgages specifically, let us clarify the difference between simple and compound interest — because this is where confusion begins.

Simple interest is calculated only on the original principal. If you borrow $200,000 at 6% simple interest, you owe $12,000 in interest every year, regardless of how long the loan runs. After 10 years, total interest is $120,000. The balance is $320,000.

Compound interest is calculated on the principal plus all previously accrued interest. Each month, the interest charge is added to the balance, and next month's interest is calculated on the new, larger balance. This is sometimes called "interest on interest."

Year	Simple Interest Balance (6%)	Compound Interest Balance (6%)	Difference
0	$200,000	$200,000	$0
5	$260,000	$270,678	$10,678
10	$320,000	$366,132	$46,132
15	$380,000	$496,560	$116,560
20	$440,000	$673,427	$233,427

The gap between simple and compound interest grows dramatically over time. After 20 years, compound interest adds $233,427 more than simple interest on the same loan. This is why the compounding period — how long you hold the reverse mortgage — is the most critical variable in the total cost equation.

Every reverse mortgage in Canada uses compound interest. There are no simple-interest reverse mortgage products available.

How Reverse Mortgage Interest Accrues Monthly

On a reverse mortgage from HomeEquity Bank, Equitable Bank, Bloom Financial, or Home Trust, interest compounds monthly. Here is exactly what happens:

1. Your annual interest rate is divided by 12 to get the monthly rate
2. Each month, the monthly rate is applied to your current outstanding balance
3. The resulting interest charge is added to your balance
4. Next month, the process repeats on the new, higher balance

For a $200,000 balance at 6.49% annual interest:

• Monthly rate: 6.49% ÷ 12 = 0.5408%
• Month 1 interest: $200,000 × 0.5408% = $1,082
• New balance: $201,082
• Month 2 interest: $201,082 × 0.5408% = $1,087
• New balance: $202,169

Each month, the interest charge is slightly larger than the month before. In month 1 it is $1,082. By month 120 (year 10), the monthly interest charge has grown to approximately $1,958 — nearly double — because the balance it is calculated on has nearly doubled.

According to HomeEquity Bank, the average CHIP reverse mortgage is held for approximately 9–10 years before repayment, making the 10-year projection the most relevant benchmark for most borrowers.

Projections at Three Interest Rates

The following projections show how a $200,000 lump-sum reverse mortgage grows at three different rates — 5.50%, 6.50%, and 7.50% — over 5, 10, 15, and 20 years. These rates span the range currently available from Canadian reverse mortgage lenders in 2026.

Projection at 5.50%

Year	Balance	Interest Accrued	% Growth
0	$200,000	$0	0%
5	$262,680	$62,680	31%
10	$345,080	$145,080	73%
15	$453,340	$253,340	127%
20	$595,560	$395,560	198%

Projection at 6.50%

Year	Balance	Interest Accrued	% Growth
0	$200,000	$0	0%
5	$275,230	$75,230	38%
10	$378,760	$178,760	89%
15	$521,280	$321,280	161%
20	$717,400	$517,400	259%

Projection at 7.50%

Year	Balance	Interest Accrued	% Growth
0	$200,000	$0	0%
5	$288,340	$88,340	44%
10	$415,820	$215,820	108%
15	$599,660	$399,660	200%
20	$864,660	$664,660	332%

The rate difference is significant. Over 10 years, the gap between 5.50% and 7.50% is $70,740 — on the same $200,000 loan. Over 20 years, the gap widens to $269,100. This is why Rick Sekhon shops multiple lenders for every client. A seemingly small rate difference of 1–2% translates into enormous dollar differences over time.

For a detailed rate comparison across all four Canadian reverse mortgage lenders, see our total cost comparison guide.

The Rule of 72: A Quick Mental Shortcut

The Rule of 72 is a simple formula that tells you approximately how many years it takes for a balance to double at a given interest rate:

Years to double = 72 ÷ interest rate

Interest Rate	Years to Double
5.50%	13.1 years
6.00%	12.0 years
6.50%	11.1 years
7.00%	10.3 years
7.50%	9.6 years

At 6.50%, a $200,000 reverse mortgage balance doubles to approximately $400,000 in about 11 years. At 7.50%, it doubles in under 10 years. This rule is imprecise for exact calculations, but it gives you an instant mental picture of the compounding trajectory.

Rick Sekhon uses the Rule of 72 in initial consultations to give clients a quick sense of scale before running detailed projections.

How Voluntary Payments Reduce Compounding

Here is the good news: you are not powerless against compound interest. Most reverse mortgage lenders allow voluntary payments — either interest-only or principal-plus-interest — without penalty, up to a certain annual limit (typically 10–20% of the original balance).

You are never required to make payments. But when you do, the impact is substantial because you are removing the base on which future interest compounds.

Impact of Paying $500/Month Voluntarily

Consider a $200,000 reverse mortgage at 6.50%. Here is the balance with and without voluntary monthly payments of $500:

Year	No Payments	$500/Month Voluntary	Savings
5	$275,230	$233,860	$41,370
10	$378,760	$257,420	$121,340
15	$521,280	$267,100	$254,180
20	$717,400	$258,300	$459,100

By paying just $500/month — less than the cost of a modest car payment — you reduce the 20-year balance from $717,400 to $258,300. The total savings in interest is $459,100. Even paying for just the first five years (then stopping) dramatically reduces the compounding base for all subsequent years.

This is not the same as a mortgage payment. It is entirely optional. You pay when you can, skip when you cannot. But the math strongly favours making voluntary payments during years when your cash flow allows it. For more on this, see our guide on partial repayment options.

Comparison to Regular Mortgage Interest

Some people argue that reverse mortgage interest rates (5.50%–7.50%) are "too high." It is worth comparing how interest works on a regular mortgage versus a reverse mortgage.

On a conventional mortgage at 4.89%, a borrower with a $200,000 balance and 25-year amortization pays approximately $148,700 in total interest over the life of the mortgage. They also make $348,700 in total payments ($200,000 principal + $148,700 interest) — roughly $1,162/month for 25 years.

On a reverse mortgage at 6.49% for 10 years, the total interest on $200,000 is approximately $178,760. No monthly payments are made. The interest cost is higher, but the monthly cash-flow saving is $1,162/month — or $139,440 over 10 years.

Factor	Conventional Mortgage	Reverse Mortgage
Rate	4.89%	6.49%
Monthly payment	$1,162	$0
Total interest (10 years)	~$82,400	~$178,760
Cash out of pocket (10 years)	$139,440	$0
Net cost after cash-flow offset	$82,400	$39,320

When you account for the cash that stays in your pocket, the reverse mortgage's net cost — total interest minus payments you would have made — can actually be lower than a conventional mortgage. This reframing is critical for retirees evaluating the true cost of a reverse mortgage.

According to the Financial Consumer Agency of Canada (FCAC), borrowers should consider not just the interest rate but the total cost of borrowing in the context of their full financial picture — including the opportunity cost of making monthly mortgage payments on a fixed retirement income.

Estate Impact: What Your Heirs Inherit

The most common concern about compound interest is its impact on inheritance. Let us quantify this directly.

Assume a $600,000 home, a $200,000 reverse mortgage at 6.50%, and home appreciation of 3% per year:

Year	Home Value	RM Balance	Remaining Equity	Equity as % of Home
0	$600,000	$200,000	$400,000	67%
5	$695,560	$275,230	$420,330	60%
10	$806,350	$378,760	$427,590	53%
15	$934,810	$521,280	$413,530	44%
20	$1,083,670	$717,400	$366,270	34%

At every point in this projection, significant equity remains. Even after 20 years of compounding, the homeowner's heirs would inherit $366,270 in equity — assuming just 3% annual appreciation. According to the Canadian Real Estate Association (CREA), Ontario home values have historically appreciated at roughly 4.1% annually, which would leave even more equity.

The no-negative-equity guarantee offered by all four Canadian reverse mortgage lenders (CHIP, Equitable Bank, Bloom Financial, Home Trust) means the estate will never owe more than the home sells for. If — in an extreme scenario — the home value drops below the loan balance, the lender absorbs the loss.

For more on how reverse mortgages affect inheritance, see our detailed guide on reverse mortgage and inheritance in Ontario.

Home Appreciation as a Natural Offset

Home appreciation is the most powerful counterforce to compound interest. If your home appreciates at a rate equal to or greater than your reverse mortgage interest rate, your equity stays flat or even grows.

In practice, reverse mortgage rates (5.50%–7.50%) typically exceed short-term home appreciation rates. But over longer periods, Canadian real estate has delivered strong returns. The key insight is that appreciation reduces the net cost of the reverse mortgage — the interest you pay is partially or fully offset by the increase in your home's value.

Annual Appreciation Rate	Net Equity Change After 10 Years ($600K home, $200K RM at 6.50%)
0% (flat market)	−$178,760
2%	−$48,410
3%	+$27,590
4%	+$109,720
5%	+$198,520

At 3% annual appreciation, your net equity increases by $27,590 over 10 years despite the reverse mortgage. At 4%, it increases by nearly $110,000. The reverse mortgage balance grows, but the home grows faster.

This does not mean compound interest is free. It means the cost should be evaluated against the asset it is secured by — an asset that has historically appreciated in Ontario.

Strategies to Manage Compound Interest

Rick Sekhon recommends several strategies to manage the impact of compounding:

1. Take only what you need. If you need $100,000, do not take $200,000. Every dollar you do not borrow saves you compound interest. Consider a line of credit structure to draw only as needed.

2. Use monthly draws instead of a lump sum. Drawing $1,667/month instead of $200,000 upfront can save over $100,000 in interest over 10 years. See our guide on lump sum vs monthly payments.

3. Make voluntary payments when possible. Even sporadic interest payments reduce the compounding base. You do not need to commit to a schedule.

4. Lock in the lowest rate available. Shop across HomeEquity Bank, Equitable Bank, Bloom Financial, and Home Trust. A 1% rate difference saves $70,000+ over 10 years on a $200,000 loan.

5. Consider the timing. Taking a reverse mortgage at 75 instead of 65 means roughly 10 fewer years of compounding before the loan is repaid — and a higher LTV ratio due to your age.

The Compounding Period Is What Matters Most

Here is the insight most guides miss: the interest rate gets all the attention, but the compounding period has an even larger impact on total cost.

A $200,000 reverse mortgage at 7.50% held for 5 years costs $88,340 in interest. The same loan at 5.50% held for 15 years costs $253,340. The lower-rate loan costs $165,000 more because it compounds for three times as long.

This is why a reverse mortgage taken later in life (age 75+) often costs far less in total interest than one taken at 60 — even if the rate is higher. The shorter holding period is the dominant factor.

FSRAO requires that all Ontario reverse mortgage lenders provide borrowers with clear projections showing the balance at multiple future dates. Make sure you review these projections carefully before signing — and ask Rick Sekhon to run multiple scenarios so you can see how different holding periods affect the total cost.

Frequently Asked Questions

Is compound interest on a reverse mortgage the same as compound interest on a savings account?

The math is identical — but it works against you instead of for you. In a savings account, compound interest grows your money. On a reverse mortgage, it grows your debt. The compounding frequency (monthly in both cases) and the rate determine the speed of growth.

Can I switch from compound to simple interest?

No. All reverse mortgages in Canada use compound interest. There are no simple-interest reverse mortgage products available from any Canadian lender. However, you can effectively convert to simple interest by making voluntary interest-only payments each month, preventing interest from being added to the balance.

How does the interest rate get set?

Reverse mortgage rates are based on Government of Canada bond yields plus a lender-specific spread. HomeEquity Bank, Equitable Bank, Bloom Financial, and Home Trust each set their own rates, which is why shopping through a broker like Rick Sekhon — who can access all four lenders — is important. See our interest rate guide for current rates.

Will my heirs be stuck with the compounded balance?

Your heirs have several options: sell the home and keep the remaining equity, refinance the reverse mortgage into a conventional mortgage to keep the home, or pay off the balance from other assets. They will never owe more than the home's sale price thanks to the no-negative-equity guarantee. For full details, see our guide on what happens to a reverse mortgage after death.

How do I see projections for my specific situation?

Contact Rick Sekhon for a personalized projection based on your home value, age, desired amount, and the current rates from all four lenders. He provides detailed year-by-year breakdowns showing the balance, remaining equity, and home appreciation offset — at no cost and with no obligation.

Does inflation reduce the real cost of compound interest?

Yes. Inflation erodes the real value of future debt. A $400,000 balance in 2036 has less purchasing power than $400,000 today. At 2% annual inflation, that $400,000 balance is equivalent to roughly $328,000 in today's dollars. This does not eliminate the cost, but it meaningfully reduces the real burden on your estate — another factor to weigh when evaluating the true cost of a reverse mortgage over 10 years.

Understanding the Numbers Puts You in Control

Compound interest on a reverse mortgage is not a hidden trap — it is straightforward math that every borrower should understand before signing. The balance grows. That is the cost of eliminating monthly payments and aging in place in the home you love. The question is whether the growth is manageable in the context of your home's value, your estate goals, and the retirement cash flow you gain by not making monthly mortgage payments.

When you understand the numbers, you control them. Take only what you need, draw it gradually, make voluntary payments when you can, and lock in the lowest rate available. The math is not your enemy — it is a tool you can manage.

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