Benjamin Hays that would make sense, however I was told that the reason the government did not accept a joint account was to hold funds if the foreigner died and had outstanding bills. If it is a joint account, the other person could withdraw all funds if the foreigner died and then there would be no money held to pay off any outstanding debts. And that also made sense to me.
I have always been told that the account cannot be a joint account, however I have heard that a few people do have joint accounts. I don't have any details about the joint accounts, but I have been told "NO it cannot be joint" by the immigration office in Loei and Pattaya. This was about 3 years ago, so I don't know if things have changed. I am quite sure that I also read on the government website that the account cannot be joint.
Am i reading it incorrectly? i think it clearly states in point #4 (where you highlighted), until the end of validity... doesn't that mean until the end of the ONE YEAR... at the point that you must renew your O-A, you will be required to have health insurance.