The Economy of the Reach is shown by the Economy card (26) tucked under the card play area on the map.
While the Magnate is a Regent, the Empire has a Closed Economy: Regents cannot tax Empire-controlled cities (even Loyal ones) unless they have the matching Monopoly.
While the Magnate is an Outlaw, the Reach has an Open Economy: Players may tax Loyal cities more than once per turn. The Magnate may also tax Rival and Free cities more than once per turn.
Act: 3