I suspect (hope) everyone here knows this but just in case...
How do you compare the break-even point between a variable rate vs fixed rate mortgage?
- Make a couple of assumptions about likely interest rate future.
- Use current rates available to calculate break-evens between V vs F.
- If you assumed future movements of interest rates are better/worse than break-evens - you know what to do.
It is most important to WRITE down, rather than vaguely think about, the future path of mortgage rates. Otherwise human bias will ruin your results (same with fund managers from other sectors being 'experts' in your sector - unless they write down their predictions and date them (and pay $5 for the bet).
If it is not written down, and kept in a notebook for future reference then you do not have a starting point for realising how good/bad your financial skills are (or what work on them you need).
So using simple numbers, not current rates, for an example....
Variable = 4.75%
2 Yr fixed = 5.40%
3 Yr fixed = 5.75%
So {1+.0475)^2 = 1.097256250
2 yr Fixed, {1+.0540)^2 = 1.110916000
So {1+.0475)^3 = 1.149375922
3 yr Fixed, {1+.0575)^3 = 1.182608859
Do I choose fixed vs floating?
What is the effective interest rate for the 2 Yr fixed v variable rate (aka break-even rate)?
If no move for 1 yr?
= (1.110916000 / 1.0475) - 1 = .06054 aka 6.054%
Qn: Do I expect variable rates to move up by more than 1.30% in 1 year from now?
Yes: So fix
No: Stay Variable
If I am wrong, fix and mortgage rates don't move then I have paid (effectively) a 1.30% insurance premium to protect me from the risk of rising rates. Am I happy to pay that premium for not worrying about rates rising for the next 2 (3) years?
Qn: How long should I fix for?
How to choose between 2yr fixed vs 3 yr fixed
What is the effective interest rate for the 3rd yr on the 3 Yr F vs the 2 Yr Fixed (aka break-even rate)?
= (1.182608859 / 1.110916000 ) - 1 = .0645 aka 6.45%.
So do you think interest rates will be higher than 6.45% on variable rate mortgages in two years from today?
Yes ==> Fix for 3 years
No ==> Fix for 2 years
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