Don't forget, if you have a 4th graders (either entering 4th grade or leaving 4th grade) you can get a free federal parks, lands and waters pass. This pass lets you in national parks for free, and the BWCA for free. The last time I had a 4th grader I just gave them our pass and they refunded our entire BWCA fee. It includes all the kids in the family and up to 3 adults.

Here is the link

Thanks for the tip, my son just finished 4th grade and we will bring this with us when we pickup our permit from the ranger station!

We tried to use the pass at Sawbill Outfitters and they weren't familiar with it. Then, out of curiosity, I called the Tofte Ranger Station and they said it didn't apply to the Boundary Waters. Apparently there are inconsistencies with who honors the pass.