The United Arab Emirates, Tunisia, Mongolia, Macau, Grenada and Barbados were also lifted from the list by finance ministers, in a move that comes just weeks after the bloc unveiled its original list of 17 non-EU nations.
The decision drew criticism from campaigners including Oxfam who say the EU's commitment to tackle tax avoidance after the "Panama Papers" leak last year has now been watered down.
"Eight jurisdictions have been removed from the EU's list of non-cooperative jurisdictions for tax purposes, following commitments made at a high political level to remedy EU concerns," an EU statement said.
The eight countries will now be on a "grey list" of countries that have made unspecified commitments to the EU on reforming their tax laws.
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The blacklist now covers just nine jurisdictions: American Samoa, Bahrain, Guam, Marshall Islands, Namibia, Palau, Saint Lucia, Samoa and Trinidad and Tobago.
Ministers agreed that "delisting was justified in the light of an expert assessment of the commitments made by these jurisdictions to address deficiencies identified by the EU," the statement said.
"In each case, the commitments were backed by letters signed at a high political level."
The EU originally screened a total of 92 countries to draw up the list, which is expected to be continuously updated.
Oxfam said Tuesday's decision undercut EU efforts to get tough on tax.
"The EU is rushing to take countries off the blacklist without it being clear what they have actually committed to improve; this is further undermining the process," said Aurore Chardonnet, Oxfam's EU Policy Advisor on tax and inequality.
"EU governments should tackle tax havens within the EU with the same urgency they are pressuring other countries to adopt tax reforms that were decided by an exclusive club of rich countries," she added.
EU Economic Affairs Commissioner Pierre Moscovici last week accused several European countries including Ireland, the Netherlands, Luxembourg, Malta and Cyprus of being tax policy "black holes" and promised to pressure them to change their ways.
Moscovici has also urged ministers to make public any commitments made by countries to get off the list.
"Today's decision further weakens the credibility of this list," she said.