“Kaufman and his co-authors propose an alternative design framework for a carbon tax: a near-term to net zero (NT2NZ) approach.
In a nutshell, rather than asking what the optimal carbon price is in some econo-metaphysical sense, the approach begins by asking: Given other policies in place and a reasonable set of assumptions, what price on carbon is required to drive emissions to net zero on schedule?”
https://www.vox.com/energy-and-environment/2020/8/17/21370732/carbon-tax-simple-useful-nt2nz