How long do you need to be out of Thailand to get another 30 days? Friend coming from France, will be here for three and half months then back to France. Do they get 60 days on entry to Thailand? Says so on the Thai Gov Tourist website but I do not think it is updated.

Will go visit Lao for one week then come back overland at Nong Khai, do they get a 30 day visa?

regardless of where they enter from, if entering on a tourist visa they will get a 60 day entry stamp, is entering on a visa exempt entry they will get a 30 day entry stamp, both can be extended by 30 days at a local immigration ofice

As you’re asking about entry into Thailand, I’ll move your post to the appropriate forum.

4 hours ago, stupidfarang said:

Will go visit Lao for one week then come back overland at Nong Khai, do they get a 30 day visa?

 

There is no minimum period required outside Thailand before returning from Laos. Even returning the same day is permitted. Your friend, as a French national will not need a visa to return to Thailand. He is eligible for a 30-day visa exempt entry.

32 minutes ago, BritTim said:

 

There is no minimum period required outside Thailand before returning from Laos. Even returning the same day is permitted. Your friend, as a French national will not need a visa to return to Thailand. He is eligible for a 30-day visa exempt entry.

Thank you

OP, so your friend needs less than 4 months.

Can enter visa exempt and obtain 30 day extension then exit Thailand and reenter visa exempt+ extension.

Equals 4 months.

OR 

Enter with SETV plus extension only provides 90 days.

Yes can do border run however on balance the first option seems more simple.