And it was the exact same script this year, with Federer winning his singles match in the final before helping clinch the deciding rubber in the mixed doubles.
It was Switzerland's fourth title overall, behind only the United States with 6.
Germany hit back fast and hard in the second to break Bencic courtesy of some great net play by Zverev, and Kerber held for 3-1.
ATP Finals victor Zverev then overcame Matt Ebden 6-4 6-3 to complete the win, and Germany's place in Saturday's final.
Federer defeated Frances Tiafoe, Stefanos Tsitsipas, Cameron Norrie and Zverev in straight sets and will be full of confidence heading into Melbourne Park later this month.
Federer is in top form as he helped Switzerland win the Hopman Cup this week. "I'm very happy about these records, but I didn't come here for that", 20-times major champion Federer said.
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"It's always tough to play against Belinda", Kerber said.
"We really wanted to win as a team", Zverev said.
As if beating Federer is not flattering enough for Tsitsipas, he now sits 15th in the world tennis rankings, sitting 12 spots behind Federer, and wins like this against one of the best players of all time will do wonders for the 20-year-old's quest to being ranked the number one player in the world. The 23-year-old after shaking hands with Federer went on to "steal" the 37-year-old Tennis star's towel which was left on his seat.
Bencic was able to work her way back into the contest and broke back in the 10th game to raise hopes of a third set.
Germany will now be looking to exact revenge on the Swiss after losing in the final past year.
I played well and served good.
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Those numbers are a jump from the fewer than 90 cases confirmed the week of December 8. The dominant strain circulating previous year , H3N2, was especially hard to stop.
"It is good to finish on a singles performance like this", he said.
Earlier, Federer overcame a scare in the first set tiebreak to win 7-6 (7-5) 7-6 (7-4) in 93 minutes.
For a second time Kerber was unable to serve out the match, as Bencic forced it to a tie-break.
They changed ends at 3-3, with their partners both watching intently from the side-lines, and Bencic saved two match points to change ends still all square, 6-6.
It wasn't until Kerber's third chance that a backhand victor secured the 6-4, 7-6 (8/6) win.
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In the second set, both players broke each other once before the set went into a tie-breaker which was won by Bautista Agut. Open past year in a spectacular return to form after elbow surgery, missed the chance to reach his sixth straight final.