if we have joint custody do i have to pay child support?

MY WIFE AND I HAVE JOINT CUSTODY AND I HAVE THE CHILDREN ABOUT 80% OF THE TIME. THE X DOESN'T PAY A THING. HOW MUCH TIME DO YOU SPEND WITH THE KIDS AND IF U HAVE THEM LESS THAN 70% OF THE TIME THEN YOU SHOULD THINK OF PAYING CHILD SUPPORT. IF IT WAS THE OTHER WAY AROUND I WOULD PAY CHILD SUPPORT FOR THE FACT THAT  I KNOW THE CHILDREN ARE GETTING WHAT THEY NEED. JUST REMEMBER ALWAYS PUT THE CHILDREN FIRST. JOINT CUSTODY IS ONE OF THE HARDEST THINGS WHEN BOTH PARENTS LOVE THEIR KIDS. KIDS GO THROUGH EMOTIONALPAIN WHEN THERES A DIVORCE.

My husband and I have joint custody of our kids and we split the time with them about 40/60 (me getting the kids a few more nights a month).  My husband makes more money than I do and he owes me child support (even though our time with the kids is almost split in half.  Child support for PA is calculated with the time you have the children and by salary too (among other things).  You should seek an attorney, but their are state calculators for child support out there to help you figure out a basic amount, who owes who, etc.    My question to you is.....why does he want you to pay support?  I assume you make more money than him?  He if that is the case and you are pretty much splitting custody than yes you might owe him money.  Many factors come into play though so seeking a lawyer would be beneficial.