Estimate To Complete (ETC) is a function of time. ETC can be defined as the answer to the question: What is the cost of the remaining work?. The estimated cost to complete the project, named Estimate To Complete (ETC), is the diference between EAC and AC. Mathematically, the range of ETC is economic value ($) and the domain of ETC is time. The minimun value of ETC is zero. There is no maximun for ETC. EAC can be obtained by adding the ETC to the AC (Actual Cost).