Humana must install a new $2 million computer to track patient records in its multiple service areas. It plans to use the computer for only three years, at which time a brand new system will be acquired that will handle both billing and patient records. The company can obtain a 6 percent bank loan to buy the computer or it can lease the computer for three years. Assume that the following facts apply to the decision:

The computer falls into the three-year class for tax depreciation, so the MACRS allowances are 0.33, 0.45, 0.15, and 0.07 in Years 1 through 4.

The company's marginal tax rate is 27 percent.

Tentative lease terms call for payments of $550,000 at the end of each year.

The best estimate for the value of the computer after three years of wear and tear is $610,000.

What is the NAL of the lease? Format is $xx,xxx.xx or ($xx,xxx.xx)

What is the IRR of the lease? Format is x.xx% or (x.xx)%

Should the organization buy or lease the equipment? Format is Buy or Lease