Adapting to Climate Change: Canada's Reinsurance Market

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First published on December 20, 2024

3 minute read

✎ Updated By Vitalii Starov on September 24, 2026

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Canada continues to see expensive weather-related losses. Will this affect reinsurance capacity across the country?

In this market guide, our editorial team explores OSFI’s current reinsurance guideline and OSFI’s 2026 natural catastrophe bond notice. We also provide an overview of the Insurance Bureau of Canada’s 2025 loss review and an update on extreme weather from Statistics Canada’s updated extreme-weather analysis.

Does Canada Have a Reinsurance Capacity Shortage?

High reinsurance prices, higher attachment points and a true capacity shortage would affect insurers and policyholders differently.

Although the publicly available information reviewed indicates higher costs for insurance coverage, significant catastrophe losses, and tighter standards around reinsurance risk management, we do not have treaty-level detail on placements, price, and retentions. As a result, we do not believe there is sufficient information to conclude that there is a shortage of catastrophe or other forms of protection in Canada’s property/casualty insurance and reinsurance market.

What Reinsurance Capacity Actually Measures

MeasureWhat it tells youWhat it does not
prove by itself
Treaty limitThe maximum potential
amount that can be
recovered under a
reinsurance layer or
under a reinsurance
program
Reinsurance capacity
does not tell you that
this limit of coverage
is affordable, or that
every peril is
covered.
Attachment pointThe loss point at
which the reinsurer
begins paying.
It does not show that
the primary insurer
has little retained
loss.
Cedant retentionThe amount of risk
that the insurer
actually has between
or before reinsurance
layers.
A higher retention may
be voluntary or
involuntary.
Placement percentageThe percentage of a
requested reinsurance
program that could be
subscribed by
reinsurance
underwriters.
It does not tell us
whether the wording or
counterparties
achieved the goals of
the buyer.

What the Current Public Evidence Shows

EvidenceSupported conclusionLimit on the conclusion
IBC severe-weather lossesIBC has reported $9.4
billion (in 2025
dollars) for 2024 and
more than $2.4 billion
for 2025.
Annual insured damages
do not measure
reinsurance supply or
treaty recoveries.
Statistics Canada
consumer analysis
Home and mortgage
insurance premium
rates increased 45%
from December 2019 to
December 2025.
It would be wrong to
suggest that
reinsurance has been
the only cause of the
change. Insurance
claims are a major
factor, as are
rebuilding and repair
costs.
OSFI Guideline B-3Insurers that are
federally regulated
must manage their
counterparty,
contract,
concentration, and
recoverability risks.
The guideline does not
show that foreign
reinsurers have been
leaving.
OSFI catastrophe-
bond notice
Natural catastrophe
bonds may be eligible
for capital
recognition, but this
is only if they are
approved and satisfy
certain conditions.
We cannot say, based
on current public
evidence, how much
capacity insurers are
going to utilize
through this permitted
tool.

It is entirely justified to be concerned about catastrophe exposures given losses seen in 2024. However, to say capacity cannot cope requires evidence.

How Catastrophe Pressure Can Reach a Home Policy

Reinsurance or loss changePossible insurer responsePossible policyholder effect
Higher retained losses
below the treaty
attachment
Catastrophe pressure
may lead to higher
primary-insurance
premiums, tighter
underwriting
standards, and
mitigation
requirements being
added to policies.
Higher prices, new
policy terms such as
inspection
requirements, and more
rigorous underwriting
in exposed locations.
Higher reinsurance priceCatastrophe pressure
can influence an
insurer’s perception
of what constitutes
adequate rates and its
appetite for
particular businesses.
Catastrophe losses can
lead to upward
pressure that may
contribute to premium
growth on home
insurance policies,
although this is not
necessarily on a
dollar-for-dollar
basis.
Lower limit or
incomplete placement
Insurers may decrease
risk concentration
across home policies
or use alternate
policy structures in
response to
catastrophe pressure.
For selected risks,
coverage limits or
insurance availability
may change.
Different wording
or exclusions
Insurers consider
which losses stemming
from catastrophes will
be passed along via
reinsurance.
Catastrophe pressures
do not automatically
change your policy
wording and the
insurer is still
obligated to live up
to the promises made
in your policy.
More capital-market
protection
Catastrophe bonds and
other collateralized
risk-transfer
instruments can
complement standard
reinsurance contracts
in markets around the
world.
New coverage does not
automatically apply to
a home unless a change
is made to the primary
insurance policy.

Keep in mind, though, that this is not a way to know for certain whether catastrophe-related rate hikes in the reinsurance market caused your hike. If your rate went up, ask your insurer to explain why it increased your rates and changed your policy.

Read More: Read About Public Backstops for Catastrophe Risk

Guideline B-3 Is Now in Force

OSFI’s Guideline B-3 on the assumption or the ceding of reinsurance took effect on January 1, 2025. The guideline requires federally regulated insurers to have a documented reinsurance risk-management framework, conduct counterparty due diligence, negotiate legally enforceable reinsurance contracts, perform stress testing, and report regularly on reinsurance risks to senior management.

B-3 is currently in force and is not a potential obstacle to licensure. In this context, “unregistered” has a specific supervisory and capital-related meaning and does not have the ordinary connotation of being unlicensed or illegal.

What This Means for Homeowners

  • Premium changes don’t necessarily result from the nationwide reinsurance situation. When your rate goes up or down, ask for details on what changed: Your location, home characteristics, coverage limits, or deductibles may have changed, or your policy may have different endorsements. A lower rate may be tempered by lower coverage or a higher deductible. Compare declarations pages from your old and new policies before you shop.
  • Some, but not all, mitigation efforts qualify for a premium reduction. Before making improvements, ask your insurer whether they qualify for a credit. Save all receipts and documentation on home improvements. Make sure your home’s rebuild specifications are accurate and keep an inventory of your personal property current. Track home maintenance, including the roof, plumbing, electrical system, and water mitigation efforts.

Read More: Learn Why Home Insurance Can Increase at Renewal

With over 7 years in the insurance industry, Matt focuses on home and life insurance, offering sharp analysis and insights on underwriting trends, coverage structures, and how market changes impact consumers.

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