IMA is a non-profit making organisation. Funding is decided annually by the Council. Any funds generated are adjusted solely to cover the costs in running the organisation, to carry out testing and to publish and distribute promotional material, as deemed necessary by the appropriate committees.

Membership is either Full or Associate. An Associate has the right to attend General Meetings but not to vote, and qualifies for membership of the Council. Membership fees for producer members are based on the tonnage of chemicals used to produce rigid PU insulation sold in the UK, for suppliers and systems houses it is based on tonnes of chemicals supplied for production of PU insulation in the UK, and there is a flat basic membership fee for associate members..

Current fees for new members are available by contacting the IMA office