My arrangement was 75-25. My STBX made 25% of the household income so we figured out the bills as of when I was about to leave then I paid her 75% each week (my driving force was keeping things "normal" for the kids). I also have been paying on an equity loan since it was being drawn from my check anyways. I took on a third job t pay my bills. It has been hard but sometimes being really busy has helped me. Yes there is some quilt involved also.