He is taking the piss.
The calculator is a percentage of his income. About 16% if it’s two children.
How much of your income is being used to support your children? I bet it’s more than 16%. That’s true whether you’re working part time or full time.
He is manipulating you. And letting his daughters down.
I spent months listening to my ex complaining about how he’s got no money because his life is so expensive and CM is so much. How he’s got no money and he’s always overdrawn at the end of the month.
He earns a six figure salary. Yes.
I stopped listening to him at all at the point when he went on a 5* all inclusive holiday in august with his older children. And then went on a boys weekend on mainland Europe with his friends. Plus several trips away to UK cities. And bought a new car. And so on… All while I looked after our child.
I sat and thought about how I was struggling but managing to make ends meet on a salary about 1/3 of his. How I was claiming UC to afford childcare so I could continue to work FT. How the CM he was complaining about was less than half the monthly childcare bill - never mind contributing anything to housing or feeding or clothing our child. How I would see a day trip out (on public transport, because I couldn’t afford a car) as a big treat and expense and could in no way imagine being able to afford to go on holiday.
It is not my fault that he’s shit with money. Or that he’s got big maintenance responsibilities because he fucked up two relationships and has 3 kids to pay for. Or that his lifestyle doesn’t meet his expectations. He doesn’t deserve my sympathy. At all.
You know that your ex can perfectly well afford to pay CM. He just doesn’t want to. And he expects you to feel sorry for him about it.
Does he feel any sympathy for you when you have to budget carefully and all your income goes to keeping your household afloat? When you make sacrifices because there isn’t money to do anything else? thought not.
Make a CMS claim and stop imagining you’re responsible for his finances.