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I'm sorry to hear about your situation. Generally speaking, yes, that's what's going to happen. Now generally it's not about who makes more, but rather who has custody and who does not.
n Hawaii, both parents have a duty to support their child (or children). Generally, however, the parent who spends less than half time with the child – the non-custodial parent – actually pays support. The custodial parent – the parent who has the most time with the child – remains responsible for child support too, but the law assumes that this parent spends the required amount directly on the child.
You can find a fair calculation about what you can expect in terms of child support here: http://www.childsupporthq.com/hawaii-child-support-calculator.html. You can play around with the numbers, but the calculation is going to be what the courts use once it's determined who gets custody.
Hope that clears things up a bit. If you have any other questions, please let me know. If not, and you have not yet, please rate my answer AND press the "submit" button, if applicable.
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