The government believes the G-Cloud and Cloudstore will cost the taxpayer £4.93m to set up and run, but eventually save £340m.
The costs will come out of the budget of the Cabinet Office, which is led by minister Francis Maude, the MP leading the government's digital agenda.
Maude revealed the numbers in response to questioning from Labour MP Michael Dugher. Dugher had asked Maude what estimate he'd made for the cost of the full implementation of the G-Cloud and Government Application Store.
According to Maude, that data will be published alongside an ICT Strategy annual update report that is "due shortly" - it was due last month but has now slipped to the end of May. The ICT Strategy document that it will review was published in March 2011.
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