With less than a week to go before the deadline to finish this year’s third special session of the Legislature, not only are the governor and most legislators unable to agree on the amount of the Permanent Fund dividend, they also don’t agree on two key numbers central to the fiscal debates.

Legislative leadership and the nonpartisan Legislative Finance Division see a billion-dollar average annual budget deficit if the governor wins his push for a Permanent Fund dividend of $2,400 or so. The governor wants to cement the annual PFD into the constitution.

Gov. Mike Dunleavy’s team, howe...