Toronto Real Estate and Neighbourhoods Blog | Move Smartly: Would You Save More with a Fixed or Variable-rate Mortgage? (Rate Simulator)

  • Even though most of the economic news coming from around the globe has been decidedly negative recently, I’ll assume that variable rates will do nothing but rise (if using this approach errs on the side of caution, then so be it).
  • I’ll spread the timing of increases out fairly evenly – but that’s really just to keep the projections simple (if my clients have specific scenarios in mind, I am happy to work with those as well).
  • My three base simulations are designed to show you when variable rates will save you money, when you’ll just about break even, and when choosing a fixed-rate mortgage will leave you better off. They will help you establish a range of comparison.
  • You will notice that I focus on rate increases over the next three years, even though we are working with five-year mortgage terms. I do this because even the best experts who forecast interest rates for a living find it almost impossible to guess what will happen four years hence.

The three simulations below will take a mortgage of $250,000, amortized over 25 years, and compare the cost of a five-year fixed rate at 3.69% to a five-year variable rate that starts at 2.10% and goes up from there. (For you fine-print readers, we have assumed that both are compounded semi-annually). Let’s also include one more wrinkle: a variable-rate borrower who decides to set her payment at the fixed rate. (This is my favourite variable-rate strategy – if you want more detail on how it works, check out my post called The Power of Prepayment.)

Now on to the numbers.

Variable Rate Simulation #1
We’ll start with an opening rate of 2.1% today and assume that a total of six 25 basis point (1/4 of 1%) increases will occur in March and September of 2012, 2013, and 2014. The Ending Rate in five years is 3.6%.

Scenario 1 Results
Not surprisingly, if this scenario unfolds, choosing a variable-rate mortgage today will result in a substantial saving – especially for variable-rate borrowers who set their payment using the fixed rate of 3.69%.

Now let’s see what happens if variable rates increase more quickly.

Variable Rate Simulation #2
In Simulation #2, the first 25 basis point variable-rate hike occurs early in September of 2011, followed by a steady string of increases for a total of nine over the next three years. This Ending Rate tops out at 4.6%.

Scenario 2 Results

In this scenario the relative interest cost of fixed-rate vs variable-rate mortgages is about the same. Notice though that the variable-rate borrower who set her initial payment at a 3.69% still ends up with a lower balance at renewal as a result of paying more than the minimum required. This creates a small saving now that will grow much larger over time. 

Finally, let’s look at a scenario where in hindsight you would have saved money by opting for a fixed rate.

Variable Rate Simulation #3
In Simulation #3, the first 25 basis point variable-rate hike occurs in September of 2011, and we see a total of 12 quarterly increases for three straight years until the variable rate tops out at the Ending Rate of 5.35%.

Scenario 3 Results
Under this scenario, a fixed rate would end up saving you about $4,000 over five years. Our variable-rate borrower who set her payment at 3.69% still benefits from having used her approach, even though the variable rate only stayed below the fixed rate for two years. She has saved $500 in interest cost for banking her variable-rate savings while she could, and her total interest saved over 25 years will grow to $2,500. Using this strategy for as long as it is available will soften the potential blow if and when rates rise.

Of course, there are any number of rate scenarios to imagine, along with other comparisons that can be made between different mortgage options, such as short-term fixed vs. long-term fixed rates. Today’s post does not try to predict the future direction of mortgage rates (if you want my best guess at that, check out my Spring Mortgage Market Update). Instead, it offers different scenarios where one option proves less expensive than the other, and shows the magnitude of the difference. You may find some of the results surprising.

David Larock is an independent mortgage planner and industry insider specializing in helping clients purchase, refinance or renew their mortgages. David’s posts appear weekly on this blog (movesmartly.com) and on his own blog (integratedmortgageplanners.com/blog). Email Dave

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About Tariq Sultan
Dear Readers, I am a dedicated Toronto, Ontario based real estate professional who has been successfully meeting and exceeding the needs of his clients for past several years. I am actively involved in the insurance, financing, and mortgage industry. Real estate is not only my career – it is my passion. I strive to continuously provide my clients with exceptional service to ensure they are fully satisfied when it comes to their real estate needs. For any real estate related inquires contact me today, I will be happy to assist you. Best wishes, Tariq Sultan

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