The business plans being published by all Cabinet Ministers will set out what their departments aims to achieve, along with detailed costings and a timescale for the implementation of policies.
Treasury Chief Secretary Danny Alexander said the initiative would make Government more transparent and more accountable to the public than ever before.
Mr Alexander said: "Departments are setting out their plans – the milestones, the timescales by which they will achieve their policies and reforms.
"We are also going to be opening up Government information much more transparently to the public – information about the amount it costs to deliver services, information about the impact those services are having so that the public themselves can hold departments much more directly to account."
Mr Alexander denied that the coalition Government was going back to Labour's regime of targets for public service delivery, insisting the new plans would be very different from "the old complex and bureaucratic regime".
Plans will include timescales for progress on policies, such as the dates for the introduction and completion of legislation and the date when changes will take effect.