Westpac has rolled out a special two-year fixed rate of 4.99% but it has a number of qualifying criteria. The minimum amount of new lending has to be $50,000; there has to be at least 20% equity in the deal and Westpac's cashback offer does not apply.
To see how this rate compares click here to see the rates table sorted from lowest to highest two year rate. Remember too that TSB has a 15 month rate of 4.95%.