The Federal Government will want to see evidence that you are a real organization with regular meetings, ongoing classes, bulletins or newsletters and an active membership. In order to be approved as a non-profit organization, you must first exist but cannot accept donations until you are approved. Other countries have tax laws which may differ. Please become knowledgeable by researching your own individual situation. In order to perform weddings in the US, you must check with the county clerk's office, at which the couple received their marriage license, to find out if there is anything you must do to perform a marriage ceremony in that county.
Rules vary from county to county.
So long as you are duly ordained in an organized church, you may perform the ceremony and witness the signing of the license. In some counties, you may need a letter on church stationary verifying your ordination and sometimes you may need a copy of the incorporation papers to proof our existence. Only those living near New York City, Washington, DC, certain counties in Virginia and the State of Hawaii have needed such documentation. We will be happy to provide it for you only if you really need it.