Hello.

Received my 1 year retirement extension in February so was therefore told to do a 90 day report in May. The Immigration office even clipped a small ticket to my passport avising the exact date.

In April however, I made a trip into Cambodia for a few days ( using a re-entry permit ).

Question is do I still do the 90 day report in May ( as if I had never left Thailand ) or do I do it 90 days after returning from Cambodia.

Naka.

90 days after leaving Cambodia. You didn't stay 90 days in Thailand the last time.