Gillespie Gold Products, Inc. is considering the purchase of new smelting equipment. The new equipment is expected to increase production and decrease costs with a resulting increase in profits. The smelting equipment will be disposed of at the end of six years. From the following summary of benefits and costs, determine the rate of return for the after-tax cash flow. Use a combined marginal tax rate of 42% and MACRS (5-year property) depreciation.

Initial cost $50,000

Net savings per year $15,000 first year, decreasing by $1000 per year thereafter