The Chancellor last announced a fuel duty freeze back in August, a move that Treasury figures suggest will have cost the Exchequer approximately £550 million.
But officials said that loss would be recovered by underspending in Government departments.
Figures in the Autumn Statement are expected to show how the fuel duty freeze has been paid for.
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A 21-gun salute was first sounded in the capital, Havana, as Castro's ashes were taken to the cemetery in eastern Cuba.
At least three children and 18 others - including members of the local police force - were among those who died.
The Foreign Secretary was unable to rule out the possibility of continuing to pay money into the EU when he spoke to Peston On Sunday.