We have two options for you to renew an existing IKC membership:

• Snailmail option: Download our membership brochure, print and fill it out, and mail it to us with payment per the instructions in the document.
• Pay online: Please click on the buttons below to add to your shopping cart (the cart will open in a new browser tab). Click on one of the "checkout" buttons when done. The IKC accepts PayPal and major credit cards.

Joining for the first time? Please click here so we can collect your membership information.

Annual Membership Dues ($15)
(For multiple years, change the quantity number in your shopping cart)

Donate to the IKC ($10 increments)
(Change quantity number in the shopping cart for the amount you wish to give)

Donate to the General Operating Fund (stewardship, education, etc.)

Donate to the Land Acquisition Fund (restricted to buying caves and karst properties)

The IKC is a 501(c)(3) organization and donations may be deductible on your federal taxes.