It would be more than surprising if it didn't. It would be almost literally out of character. The "character", that is, of governor Glenn Stevens.
For it appears he just can't let the day pass merely as only for the race that stops a nation. He has to "stop", and occasionally "start", it as well.
Stevens has had five Cup days so far as governor - next Tuesday will be the sixth. And on all previous five he has led the RBA to change its rate.
Four of them have been increases - most famously when he hiked in 2007 in the middle of the election campaign and (helped) "stop", so to speak, John Howard's prime ministership.
The only Stevens Cup Day cut was in 2008, amid the fear and loathing of the global financial crisis. With the prospect of GFC Mark Two, or maybe just Mark 1b, that's an interesting but hopefully not an ominous portent.
In 2008 he sliced the rate by 75 points. Absent a European meltdown over the next few days, next Tuesday's cut will be only 25 points. And at this stage it will be intended as a one-off. To "normalise" interest rates.
In real analytical terms, it's actually 50-50 line ball between a rate cut and leaving rates unchanged.
Indeed, there's a stronger argument to leave them unchanged - that we still most likely face an income and investment tsunami next year requiring rate hikes.
But yesterday's CPI numbers just blew all that away. The optics suddenly became crystal clear.
There is no way the RBA could leave rates on the restrictive side of normal after underlying inflation printed at just 0.3 per cent for the quarter - that's an annual rate of 1.2 per cent.
There's some uncertainty about the quality of that number.
The ABS's CPI numbers have been all over the place in the last couple of months.
But in very simple terms, how could the RBA maintain a policy aimed at fighting too-high inflation, when if anything inflation is pointing towards being too low?
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