Tate's strike, his 20th league goal of the season, was one to savor as he curled a left footed effort across the stranded 'keeper and into the top corner of the far post.
The result continues United's good form against the sides in at the top end of the Division One table and also sealed a sixth home clean sheet in succession, with the last time United conceded coming 555 minutes ago against Ringmer on 27th January
United showed two changes to the side that drew 0-0 on Easter Monday against Eastbourne Town with Mike Gardner and Max Taylor replacing Aaron Capon and Peter Cooper who were both absent from the matchday squad.
There was also a first appearance in the matchday squad for Reserve team regular Luca Forte
United could have been ahead with just three minutes on the clock as Jason Taylor's perseverance to win the ball from Luke Pidgeon was nearly rewarded as he played in Max Taylor from the byline, but the youngsters effort was comfortably gathered by Wanderers 'keeper Kieran Campbell.
With less than half an hour played, Wanderers were reduced to ten men as Daryl Coleman was shown a straight red card for the visitors for a high challenge on Matt Geard.
Soon after, Tate punished the league leaders as he was played in by a cheeky back-heel from the enigmatic Geard to strike home his sublime curling effort to the delight of players, management and supporters alike.
Despite their numerical disadvantage, Dorking pressed forward looking to the leagues top scorer Tom Tolfrey for inspiration, but Dan Pollard and Peter Featherstone stood strong at the heart of the United defence as Russ Tanner wasn't forced into action until a weak effort from Kevin Terry was easily gathered at the start of the second half.
Jason Taylor's quick feet on the left wing saw him find space to produce an inviting cross into the area, but it just evaded the outstretched Tate in the centre and Max Taylor at the far post.
Jason Taylor was replaced by Mike Ginno on the hour, with the Under 18 man looking confident in his step up to senior football after a superb season in youth football where he has hit 8 goals in 13 appearances so far.
Wanderers main outlet during the second period came through Taser Hassan, but the former Hastings United man was superbly marshaled by Brad Lewis, who produced one of his best defensive performances during his time at The Oval
Terry saw an effort deflected wide by the stubborn United defence as Wanderers threw everything bar the proverbial kitchen sink at United, but the resolute homesters held firm to repel the visitors and claim another high profile victory in their penultimate home game of the season