Insuring a Subaru Forester or a Subaru Outback is very likely going to cost around the same amount of money, though it appears that insuring the Forester may be a little bit less expensive, depending on where in the United States you live, what trim style you get, and what year you are purchasing. There are many factors to consider when you are thinking about what your insurance rates will be on a vehicle. Different private auto insurance companies sometimes have rates that vary slightly. Insurance rates will also be impacted by what year you are looking to purchase. For instance: it is likely that an older Forester would still cost more to insure than a newer Outback, though if both vehicles were the same year, the Forester would once again be a bit cheaper. In this true cost to own breakdown, it shows that over the course of a year it will cost around $1,141 do insure a 2017 Subaru Forester. This is about $95 a month, or $6,118 after five years . This same breakdown of a 2017 Subaru Outback shows that insurance will cost $1,188 over the course or a year, coming to $99 monthly and a $6,371 five year total. Again, prices will depend on the specifics of the vehicle you would be purchasing.
Both of these vehicles received high safety ratings from NHTSA. The 2017 Subaru Forester boasts a five-star NHTSA safety rating. This high rating will likely make insurance rates significantly less expensive for the Forester over time. The 2017 Subaru Outback also received a five-star rating, so that won't really impact your decision if you are choosing a 2017 model.
You will also want to consider other aspects of the true cost of ownership for either vehicle. This link takes a look at the true cost of ownership for the Subaru Forester, and this one takes a look at the same costs for a Subaru Outback. Once again, your cost of ownership rates are going to really depend on which trim-style and year you choose to buy.
Both vehicles are great SUV's, and they share a lot of similarities. It;s all going to come down to the specific vehicle you choose. You can always call your insurance company and give them the VIN numbers of the Forester and Ourback you are considering, to find out what the exact costs of insurance will be.