The government says the temporary reduction in fuel duty is being extended to help motorists and businesses.
A reduction in the tax was first introduced by the UK in March and planned to last a year, but was extended a number of times.
The UK chancellor said this month the lower rate will now be in force until Thursday, December 31.
The Manx government says the decision's been made because of the war in the Middle East and its impact on global fuel markets.
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