The ISAPS membership year runs from 1 January to 31 December.

After 1 October every year, paying ISAPS members are invited to renew their membership. ISAPS members can renew their membership from any time from 1 October to 30 September the following year.

We encourage all members to renew their membership as early as possible. Your membership will always expire on 31 December, so there is no cost advantage in delaying your membership renewal: if you renew your membership on 1 June, it will still expire on 31 December, so you could lose out on months of valuable membership if you pay late.

Why don't we offer "pro-rata" or "rolling" memberships?

One of the main benefits of ISAPS membership is the significant discount that we offer to members for our annual international conference/Congress registration. We can only afford to offer this discount to members who have paid their full fee. If we were to offer lower membership fee to members renewing for only part of the year, they would get the same reward (lower fees for Congress registration) as members who have paid the full fee. This wouldn't be fair to the members who fully commit to our Society and pay their full membership fee.

This rule was most recently upheld by a decision of our Board of Directors in Spring 2022.