Last year, I used the 65k/monthly Income Method for my Retirement Extension. A lot of papers. The IO suggested I use the 800k Method as it was simpler, and only the bank balance proof and time limits was necessary. This was Nov 2019. I opened an account with KBank, and started depositing money monthly in order to have the 800K 3 months before my due date. I met the time limit with a month to spare.

Today I went to Samut Prakran Immigration with what I thought was all the correct documents. The desk clerk accepted my paperwork, but the approving officer said that I still needed proof of income source as before. I 'think' he explained that this was because I'm switching to the 800K Method for the first time ? I I believe I'm being told that to qualify I should have deposited 800K right after my last renewal was approved (Nov 2019) and ensure it was still 800k 3 months previous to my renewal now.

Apparently, next renewal won't need this proof.

I'm getting this through an interpreter so it's possible I'm not understanding 100%.

Can anyone clarify the procedure ? I was sure I understood what I needed to do, but now I'm confused.

Thanks