Merchant Account Fee Calculator
You can calculate your estimated monthly cost to process credit cards with this tool. This tool will account for downgrade charges and several other miscellaneous fees, and should give a decent indicator of the real monthly cost to accept credit cards.
Fill out all of the fields to the best of your ability. Do not put dollar signs $ or percentage signs % in the form fields...
Is this a bit too complicated?
try the Simple Merchant Account Fee Calculator