Shoppers will have to pay 5p for each single-use carrier bag used under a new Scottish Government rule, starting on October 20.
The Government hopes all the money raised will go to good causes, but this will rely on retailers' goodwill.
Zero-Waste Scotland has launched the Carrier Bag Commitment to recognise retailers who donate the money.
The Government-funded body has the support of the Scottish Seabird Centre, McDonald's, Marks and Spencer, the Co-operative Group, Holland and Barrett, Scotmid and RS Components.
Zero Waste Scotland director Iain Gulland said: "I urge all retailers in Scotland to consider signing up to the commitment - it's quick, easy, transparent, and provides great publicity for your business and good causes you choose to support."
Over the next few months support will be available to retailers to help them deal with the new rules.
Tom Brock, CEO of the Scottish Seabird Centre, said: "The charge for bags is very welcome: single-use carrier bags and the litter they cause harm our wonderful wildlife and Scotland's outstanding natural environment."
John Lee of the Scottish Grocers' Federation, said: "The Scottish Government has taken a very collaborative approach to developing the carrier-bag commitment and the Scottish Grocers' Federation is happy to support the commitment."