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How to Calculate ROI (Return on Investment)

ROI (Return on Investment) is probably the most important calculation one needs to make to ensure the long-term viability of their business. It is not enough to build in a profit margin on the product or service being offered. One must track with proficiency the amount of dollars being invested into attracting sales and how much ROI those dollars put back into the business. If the investment meets too little return, a product line is doomed to fail in the long-term.

ROI is also an important tool for making decisions regarding how to allocate resources. You want to invest in the resources that provide the greatest return. In order to do this you must first calculate your ROI.


Many experts seem to agree, "calculating an accurate return on investment (ROI) is not an easy thing to do."

I do not intend to give you a thorough analysis of the ROI calculation process. Calculating an accurate ROI is hard to do, but explaining the full scope of ROI calculations in less than 1000 words is far more difficult.

As such, this article is only intended to introduce you to the basic concepts behind ROI calculations. Here is a very basic equation for calculating the ROI:

ROI = [(Payback - Investment)/Investment)]*100

Your payback is actually the total amount of money earned from your investment in your company. Investment relates to the amount of resources put into generating the given payback.

You should run ROI calculations on both monthly and yearly timelines.


The business owner often misunderstands the actual amount of investment into a business. As a result, true ROI calculations for most small businesses are skewed.

Most small business owners make their mistake in this most necessary calculation, because they do not properly value their own time. Please note that when I previously defined "investment", I stated that it relates to the "amount of resources put into generating the payback."

Indeed, "resources" includes cash money. But, it also includes "human resources" or "time".

If most small business owners would value their hours at the minimum wage, and calculate their time into the investment equation, they would soon realize that their small business is running in the red!

Some small business owners will finally run ROI calculations including the human resources, and suddenly realize that they could make more money working a job. If the small business owner has been running their business for a really long time, struggling to make ends meet, they might see this calculation and close their doors once and for all.


I do not share this revelation with you so that you will close your business down. Quite to the contrary. I share this with you so that you can see the big picture and start running your business in a way that will actually generate a real profit for you and your business.

If you are within the first two years or five years of the start of your business, then running in the red should not be thought of as a bad thing. However, if you are ten years into your business and earning less than minimum wage from your business, there is a serious problem afoot that needs to be addressed immediately.


When you are just beginning your own business, you have plenty of time on your hands. This is the reason why most small business owners do not properly count their time in the ROI equation. They just look at cash expenditures and incoming monies, and they are satisfied with that calculation.

It is often said that people generate the kind of results that they believe they can achieve or the kind that they want to achieve. Seeing the goal is the first step to achieving the goal. Expectations will always bring results equal to the expectation.

Having been down the business startup path before myself, I too understand the desire to calculate ROI without consideration to the time invested in the enterprise.

However, I also understand the importance of placing a value on my time and working that into my final numbers.

In the beginning, I ran two types of ROI calculations: all resources exempting my time, AND all resources including my time.

Of course, I actually set a higher expectation for my own income level. First, I had decided on ten dollars an hour for my time. Later, I adjusted that amount upward.

Starting out, even though I ran two versions of my ROI calculations, I relied first on my resource excluding my own time. Once I had achieved this goal, then I refocused my attention to reaching the ROI which took into account my own time.

Now, that time has passed, I can go back and look at my yearly ROI and see that I have earned enough cash to pay for those early days of famine.


Every step in your business startup is a calculated guess as to what you believe you can achieve.

Measuring your results is essential to making your business profitable. ROI measurements are imperative to measuring and understanding the results you are achieving with your new or existing business.

Take into account all factors relating to the profitability of your business and don't smudge on the facts to make it seem more profitable than it really is. It is important to approach your business and your business results with absolute honesty. Be honest with yourself and face the facts of your task.

An honest examination of your business at regular intervals will help you get on and stay on track to keep the doors of your business open. You will thank yourself later.

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