Officers were dispatched to a property in Gosford Way, Felixstowe, Suffolk, at 10.30pm on Wednesday after receiving the 999 call.
On arrival – just over five minutes – later they found a woman in her 60s who had suffered serious injuries.
Paramedics were called to the scene but the woman – who has not been named – was pronounced dead.
Shaun Ryan, 61, also of Gosford Way, has been charged with murder and will appear at Ipswich Magistrates' Court on Monday.
A Home Office post-mortem found the woman had died of a single stab wound.
Formal identification is yet to take place.
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