The median home price in Alaska is $402,190. At 80% LTV, the typical loan is $321,752 at the current 6.76% average rate, producing a monthly P+I payment of $2,089. Total interest over 30 years at this rate: $430,294.
Property taxes in Alaska average 0.94% of assessed value, or $3,781 per year on the median home. This adds $315/month to your all-in housing cost. When evaluating a refinance, factor in property tax and insurance for a complete picture.
Alaska has no state income tax, so there is no state-level mortgage interest deduction. The federal deduction still applies on loans up to $750,000 for itemizers.