How soon can I renew my retirement visa in Thailand?

This is why I use an agent

In KK, I always try and get it done 45 days prior. Never had a problem.

45 days

Try Google it tells you everything

Days

In Samui:

1st time I went to immigration with 30 days left on my visa. But they told me I had to wait and come back when there was 2 weeks before expiration.

2nd time I went with 2 weeks left on it and they told me I need to apply 30 days prior, but said I was lucky because they had time available still. But they explained that next year I need to apply 30 days before expiration.

3rd time I went with 30 days left on it and they told me I needed to apply 45 days prior to expiration. When I explained that they told me last year to apply 30 days prior, they said you can't go by last year 🤣🤣🤣

I just done it was due 28 July..going to work nxt week for possibly 3 months

45 days prior to your visa expiration date.

Depends on office,, just ask them, I was given 45 days prior

In most provinces, you can apply when you have 30 days or less left. In some provinces, you can apply when you have 45 days or less left.