Plans by Suffolk's five district and borough councils to reorganise the county into three unitary authorities "will pay for themselves within five years", the authorities claim.
They estimate the proposed new structure, in response to government plans to scrap the current two-tier council system, will cost £39m to set up, with savings of £34m per year to follow.
Under these proposals, the working titles for the new councils would be Central and Eastern Suffolk, Western Suffolk, and Ipswich and Southern Suffolk
An opposing bid by Suffolk County Council for just one unitary authority was announced last week and those plans claim they could save £78.5m over the first five years.