What's the relationship between Return on Assets and Return on Average Owner's Investment? How do they affect each other? Is it true that an increase in one will also lead to an increase in another and vice versa?
Cheers for helping a very confused student
ROA is a profitability indicator that measure how effectively the firm can generate net profit using its assets. If there is a favourable trend in ROA, and that is due to an increase in net profit and not a decrease in assets, then it should also lead to an increase and favourable trend in ROI, if the increase in net profit is proportionately more than the increase in capital (If there is any). Thus, the owner is earning a greater return for the capital investment that has been made.
Sorry if my wording isn't great.
Came up with another answer (Not sure if you can say higher ROI = more external finance):
An increase in ROI means the owner is earning more net profit for every $1 of capital that has been invested. If this is because the firm has taken out drawings and is using more loans and external finance to purchase non-current assets, then the firm will be able to purchase assets it otherwise would not have been able to, and thus replace idle assets with more productive and efficient ones. Hence, the assets should be able to more effectively earn sales revenue, increasing ATO, which should have a flow on effect to increase ROA. This means that the firm is using its assets more effectively to generate net profit.