Duckett had admitted the speeding offence in September after being written to by Staffordshire Police.
He then pleaded guilty through the Single Justice Procedure when the force decided to bring a criminal prosecution rather than impose an out-of-court fine, due to the high speed at which he had been driving.
It comes after Duckett recently withdrew from the Indian Premier League in an attempt to hold on to his place in the England side. He will instead play in the early rounds of the County Championship for Nottinghamshire.
The left-handed batter struggled for form towards the end of last summer and hit just one half-century in 16 innings across all formats this winter.
In the Ashes, he made 202 runs in 10 Test innings, with a top score of 42.
The cricketer entered his guilty plea online and will now be written to with instructions for settling the £1,100 court bill.
