From a previous poster, this is the current Command rate @ JC.
From 20 Aug 18 to 14 Apr 19: Y1 $175,520 Y2 $185,524 Y3 $189,744
Assuming the Captain earning $241k is on Year 3, that's approximately $50k of above their base. $70k in another posters suggestion of $260k.
Do those figures include non-taxable allowances such as meals and overnights? Do they include any training/management margins? Lets assume they don't and those figures are gross taxable based on flight hours.
I'm not familiar with how JC calculate their overtime/incentive pay rates, but using the Air NZ CEA as a comparison, on that base salary those take home figures would require 80-90 hour rosters. Admittedly, when all you do is Tasman returns it might not be too bad a lifestyle. Unfortunately, I gather that's not the case with plenty of single sector and PAX duties, especially ZQN.
So yes, JC Captains are earning fairly decent money at the moment compared to their base. But they're having to work for it....