Hi Cove,
Do you mean that where your limit is not exceeded by your payment, you're able to take advantage of the interest free period on your CC to time your FX to Citi to cover your "purchase"? I only do this when the AUD is rising. Otherwise, I don't risk it when the AUD is falling in case it goes against me and those points cost me a lot more than I bargained for.
I'm thinking Citi CC FX rate spread to spot seems to depend on time of day. My last payment was on 25 April 3pm afternoon and pending rate was 0.7706 vs spot at 0.77 even. When it posted, it was 0.7695 which was pretty good.
This time, did it at 10:30pm and got 0.7211 vs spot at 0.7162.
Have you observed this sort of variance? I've not been able to get much guidance from Citi on how they set the rate so just assumed it was spot based on past experience.
Hope I'm not taking us too far OT.