Not many economists got Tuesday's rate cut right, with just 6 out of 27 in the latest Bloomberg survey predicting the central bank would move.

But one sage who was on the money, cementing his position as Australia's pre-eminent central bank watcher, was Westpac's Bill Evans.

"We retain our call for a cut in February while being mindful of the high hurdle represented by current market pricing.": Westpac chief economist Bill Evans. Credit:Lisa Maree Williams/Fairfax Media via Getty Images

Mr Evans revised his rates call in early December, at the time swimming very much against the tide of forecasts, with Deutsche Bank and Goldman Sachs the only other heavyweights predicting a cut.

"While we still expect rates to be on the rise in 2016 as the world economy gathers considerable momentum, we now expect the RBA to cut rates further in the early months of 2015 in an effort to bolster domestic demand and lower the Australian dollar before evidence on the world economy becomes clearer around the middle of the year," Mr Evans said a the time.