Extending A Tourist Visa Early

[soitgoes769]

I will need to extend my tourist visa 30 days which expires in a couple weeks. Can I go to the local immigration office and extend it early? If I make an extension before the date of expiry, will the 30 days be tacked onto the date I apply for the extension or will it be tacked onto the date my tourist visa expires?

Tourist visa expires May 5 + 30 days = June 3. If I go in tomorrow, April 25, will the extension then expire April 25 + 30 days = May 23 or will it be stamped June 3?

I'm American if that makes a difference. Thanks for your help, I'm new to all these rules

[lopburi3]

It will be added to your current stay so nothing lost is doing early.

[wayned]

Go tomorrow, the 30 days will be tacked on to the end of your current permission to stay not 30 days from the date that you apply!

[soitgoes769]

Wow, thanks for the quick reply! Good to know.

[hullupullo]

I went yesterday to do my extension. Had stamp "admitted until 24 APR", got extension stamp "up to 23 MAY" Small mistake but can happen, so check what you get.