Taq DNA Polymerase is provided with an optimized buffer system containing dNTP, MgCl2, stabilizers and PCR enhancers at optimal concentrations which eliminates the need for optimization. The DNA polymerase has been developed to give more robust amplification than other polymerases allowing it to perform well with challenging templates in the presence of PCR inhibitors, making it ideal for fast PCR reactions across a range of templates, without compromising specificity or yield.