He then claimed his second title alongside Bencic a year ago also against Germany.
Although the 6-4, 6-2 win over Zverev in the Hopman final reversed a loss to the German in London in November, Federer said he was just one of many challengers in Melbourne.
In an entertaining mixed doubles clash, it was the Australians who came out on top with Ebden and Barty winning 4-0 4-3 - but they will not be adding to their two Hopman Cup titles this year.
Switzerland then came up trumps 4-0 1-4 4-3 (5-4) in a deciding mixed doubles clash that came down to the final point.
Federer gave the defending champions a 1-0 lead early in the night beating Zverev 6-4 6-2. Switzerland won the since 1989, held Hopman Cup for the fourth Time - not least thanks to a superior Federer.
Federer has beaten Frances Tiafoe, Stefanos Tsitsipas, Cameron Norrie, and Zverev in straight sets at the Hopman Cup, giving him an excellent preparation for his Australian Open title defence.
The young female star Sakkari, before one of Federer's serves, jokingly yells out the question "left or right?" refering to where on either side of her would Federer serve the ball.
Under the short sets format, the match is decided by a winner-takes-all point if scores are locked at 4-4 in the third-set tiebreak.
It was Kerber who maintained her 100 per cent record in the competition, triumphing 6-4 6-4 before Zverev earned a 6-4 6-3 win over Ebden.
"I have had such a great time in Australia the last couple of years and always enjoyed playing here", he said.
Zverev broke his opponent's serve three times - the first coming in the third game of the first set after some aggressive tennis.
"I will be excited to watch it tomorrow and see who we play in the final", Federer said.
Saturday's final took on extra significance given there's a strong chance it will be the last ever Hopman Cup.
Critical to the result was Kerber's ability to convert all four of her break points during the match, while Bencic was only successful on two of seven. But Kerber denied a couple more break points to keep her team in the match with a hold, and when it came to Federer serving it out, she pulled off the shot of the match, a round-the-post victor, and Germany broke.
Bencic couldn't secure the final for Switzerland, going down to Kerber 6-4 7-6 in a thrilling second set tie breaker.
It was not until Kerber's third match point that a backhand victor secured the 6-4, 7-6 (8/6) win.
"I'm happy I'm feeling this good and playing as well as I am", Federer said.