He scored 116 not out as New South Wales reached 290 for 3 at close of play against the Shield champions, Queensland, at Brisbane's Gabba Ground.
In Adelaide, visitors Tasmania laboured to 264 for 8 against South Australia, Michael Di Venuto celebrating his selection for Australia's one-day side by scoring 68.
At the Gabba, Taylor shared an unbroken 186-run partnership for the fourth wicket with fellow Test batsman Michael Bevan, who scored 104 not out.
But all-rounder Steve Waugh, whose appointment as Australia's one-day captain on Tuesday almost certainly means an end to Taylor's international limited-overs career, missed out.
Waugh was run out for 11 when he slipped in trying to recover his ground.Reuse content