Island ownership

I want to buy an island to develop as our own sim with my inworld partner. could someone tell me the beat way to procced in buying the island. I want to share the ownership w my inworld partner. Can this be done and if so how does one share ownership? Thanks for any response.

As I understand it, there is only one owner of record per island.

They can't be split.

Sorry, it's just how they do it. Closest I could think of is getting two, one of you owns each, and join them up.

If you want to share the cost of the island, you'll have to work out a way to do that behind the scenes, as a private arrangement between you and your partner. As Desmond said, only one person can technically own an island, or any account in Second Life. There is no mechanism in their billing system to enable 2 or more parties to split the cost.

As for running the island together, you would simply deed the land to a group that you and your partner create, and use the various group roles and titles as you see fit.

Edit to add:
One idea as an easy way to split the cost, without personal financial information exchanging hands in RL, would be for the partner who doesn't have the duty of paying LL for the island to give the paying partner his/her share in Lindens, which can then be converted to cash and used toward the island fees.

You can add your partner as an estate manager also, giving them pretty much the same inworld powers as yourself over the island.