[Kevin]

My chapter uses Omega Financial to collect dues/fees. They do take a fee off the top but it's well worth it.

They do send delinquent members (at your chapter's request) off to a collection agency. They do provide you with an excellent collections solution. The amount that they charge was explained to me as a percentage rate that aims to charge your organization $35 per semester for each member on your roster (although it's done by some mathematical formula that they'll provide to you and readjust at your request).

You should also never rule out small claims court to collect what's owed to you (depending on your state). You'll need to make new members sign some kind of contract acknowledging that they owe these dues/fees and keep lots of records.