The membership year runs January-December.
Those who wish to join the Society for the first time should select the New Member level which includes a 25% discount for the first year. (This includes those who have previously purchased Module A of the training course but not yet taken membership)
Rejoining ex-members without a professional qualification with the Society should select the standard level. Ex-Professional members should contact the SI office before re-joining.
Indexers who have incorporated their business, forming a company with only one employee, may join the Society.
There are no geographical restrictions on membership, but applicants from outside the UK and Ireland are advised to join their own national indexing society where one is available.