My ex has a base wage but then gets additional for overtime, standbys etc. so sometimes doubles his wage. So we use the calculator every month and put his wage in for that month so I’m definitely getting the right amount. I would say the calculator is a fair way to do it x
We used the online calculator and ex gives me that amount weekly by bank transfer not through CMS. I think easier to agree between yourself, when we had nursery fees as well he covered half of that
All depends what their wage is , I didn’t find the calculator much help , but it’s a simple process , I’d say worth doing regardless x