Stubbington Green post office is closing for refurbishment next month.
The changes are part of a modernisation programme designed to make it easier for customers to do business through longer opening hours and modern open plan environments.
Car tax renewal and a selection of on-demand currencies will be added to the service.
The post office will shut on Tuesday, March 8 at 5.30pm.
Alternative branches are Hill Head Post Office, Crofton Lane, Stubbington, or Lee-on-the-Solent Post Office, Co-Op Store.
The new modernised branch at McColl Retail Group, Stubbington Green, will re-open on Monday, March 21 at 1pm.
Chief operating officer for McColl’s Retail Group, Dave Thomas, said: ‘We are delighted to soon be welcoming customers to our newly-refurbished Stubbington Post Office, which offers a wide range of services alongside our extensive retail offer.’