Taylor Swift's dad dodges assault charge in Australia
A spokesperson for Swift at the time said two people had been behaving aggressively towards the megastar.
After a month-long investigation, New South Wales police on Tuesday said no further action would be taken.
The confrontation happened after Mr Swift and his daughter disembarked from a yacht, in the hours after her final Eras Tour show in Sydney.
A video published by Australian media shows the singer, who is concealed beneath an umbrella, walking with her father and security guards along Neutral Bay Wharf at about 02:30 local time (15:30 GMT).
Cameras flash before two voices – reported to be a photographer and a guard – accuse each other of touching umbrellas. It is unclear whether the footage captures the alleged incident.
Mr McDonald told the BBC Swift was already inside a car when Mr Swift “charged in” and attacked him without provocation.
“I’ve been doing this for 23 years and I haven’t been in a situation where someone’s hit me in the chops,” he said.