Hi, my business visa is valid until 27th February, but I have to go out before 28 January... Will they give me 1 more month on this visa if I go out on 28?

Tx

I don't really understand your question.

 

If you have a ME Non 'B' visa that expires on February 27th you can re-enter on or before that date and will receive a new 90 day permit to stay.

 

If you have permission to stay until February 27th you can buy a re-entry permit when you exit on January 28th, and if you re-enter before February 27th you'll be granted permission to stay until February 27th.

If you do a an entry on or before the enter before date (aka expiration date) on your multiple entry visa you will get a new 90 day entry.

Do you actually have a visa issued by an embassy or consulate or an extension of stay from immigration?