Reading the verdict on Monday, Chief Justice Martha Koome said Ruto garnered 50 percent plus one vote cast.
Ruto had garnered 7.1m while Raila Odinga garnered 6.9m as declared by the IEBC.
The confirmation followed an intense 14-day process in which lawyers representing Azimio's Raila Odinga, the Independent Electoral and Boundaries Commission, and President-elect William Ruto did battle.
Outdoing Deputy President Ruto was declared President-elect on August 15 by Independent Electoral and Boundaries Commission chairman Wafula Chebukati.
Ruto garnered 7,176,141 votes (50.49 percent), defeating Azimio flagbearer Raila Odinga who had 6,942,930 votes, representing (48.85 percent).
He will be sworn in next week.
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