@Beau4 Holy Cow! 40%? Sounds like it wouldn't be worthwhile or is Alaska doing this to discourage short term rentals?
Sadly, if Airbnb is not collecting Occupancy taxes for you, you will only have two options:
Describe in your listing that you have to collect x% for Occupancy taxes and collect when the guest checks in.
Or, incorporate this into your nightly rate and pay out of your payouts. That's what I do since I don't want to mess with asking for payment from the guest or doing Special Offers. Less hassle for me and guests. Here's Airbnb's official statement on this:
https://www.airbnb.com/help/article/654/what-is-occupancy-tax--do-i-need-to-collect-or-pay-it
Hopefully Airbnb will figure out a way to do this automatically for hosts like you and me soon!