Dear Iyerjayadevaran,
MAT is applicable on all companies except -
The provisions of this section shall not apply to the income accrued or arising on or after the 1st day of April, 2005 from any business carried on, or services rendered, by an entrepreneur or a Developer, in a Unit or Special Economic Zone, as the case may be.
Tax under MAT is to be paid even if profits are allowed as deduction u/s 80IC...........
Yes provisions of advance tax will apply as usual......& on any shortfall interest u/s 234 B& 234 C shall be payable.......