The agency publishes tables that do this for you. Many factors are included in this calculation including the tax filing status, the number of dependents, and the state and federal tax rates. For each year since 1982 the agency has published a table which translates a given average weekly wage into an amount equal to 80 percent of the after-tax value of that wage earned. The law provides that the determinations made by this table are conclusive and binding upon the parties.