Now capital cost for the first 50 million is 15% per year and then increase 1% for every 50 million, what is this company's MARR when using an opportunity cost viewpoint? Draw annual rate of profit vs cumulative investment amount line/curve or diagram, find the point of intersection with cost of capital rate and that is the MARR. Now capital cost for the first 50 million is 15% per year and then increase 1% for every 50 million, what is this company's MARR when using an opportunity cost viewpoint? Draw annual rate of profit vs cumulative investment amount line/curve or diagram, find the point of intersection with cost of capital rate and that is the MARR