Discovery Potential for the Standard Model Higgs at ATLAS

The potential of the ATLAS experiment to discover or exclude the Standard Model Higgs boson is reviewed. Several important decay channels are considered, and more will be included in the future. The statistical treatment used here to combine the channels relies on a large sample approximation that is expected to be valid for an integrated luminosity of at least 2 fb$^{-1}$. Results are presented for the expected statistical significance of discovery and expected exclusion limits