Ramparts Corporation expects to have free cash flow in one year of $6 million, and this free cash flow is expected to grow at a rate of 3% per year thereafter. Ramparts has an equity cost of capital of 15%, a debt cost of capital of 7%, and its corporate tax rate is 35%. It has no excess cash. 

If Ramparts currently maintains a 0.4 debt to equity ratio, what is the present value of its interest tax shield?