Dawid Arent was arrested by officers from West Midlands Police on Saturday after a 73-year-old man was found with a serious head injury at an address in Hordern Road in the Whitmore Reans area of Wolverhampton.
The man died in hospital on Sunday afternoon.
Arent, 32 and of Hordern Road, was remanded to appear before Wolverhampton Magistrates Court on Monday morning.
A spokesman for West Midlands Police said: "A man has been charged with the murder of a pensioner who was found with a serious head injury in Wolverhampton.
"Dawid Arent was detained shortly after the 73-year-old was discovered in Hordern Road at just after 11.30pm on Saturday.
"The man was taken to hospital, but sadly died yesterday afternoon.
"He is still to be formally identified, but it's believed to be domestic-related.
"Arent, aged 32, of Hordern Road, has been remanded to appear before Wolverhampton Magistrates Court this morning [Monday, September 20]."