The Alberta floods of 2013 were the next costliest, resulting in 1.8 billion in insured damage.
Previously, the costliest insured disaster in Canada was the Quebec ice storm of 1998, which forced insurers to pay out 1.9 billion in constant 2014 dollars, according to a 2015 annual report from the bureau.
There are also more than 12,000 auto insurance claims, averaging 15,000 per claim.
In addition, there are more than 5,000 commercial insurance claims that average over 250,000 per claim.
Catastrophe Indices and Quantification Inc., a company that compiles insured loss amounts based on surveys with insurers, said there are more than 27,000 personal property claims resulting from the wildfire. The average claim is 81,000.
The fires in May forced the evacuation of almost 90,000 residents from the Regional Municipality of Wood Buffalo and destroyed about 2,400 homes and other buildings.