just been informed british counsulate chiang mai not doing prove of income letters after 1/02/2015.im due late feb to renew ext of stay income method,will immigration regonise a 3-4 week old income letter,what is the grace period any one no

I think the US one is 6 months if that helps any

It is 6 months for all income letters.

In Chaeng Khan only 1 month

The Head of Immigration Police Order says 6 months.

You can copy it in Thai and take it with you to Chaeng Khan.

It seems the income verification function is being taken away from the Honorary Consuls.