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Learn to create cumulative sums in Microsoft Excel with these step-by-step instructions and screenshots.
Creating a running total (or a cumulative sum, as it is known in Excel) is easy once you get the hang of it. Many business owners use cumulative sums to track expenses, revenue, employee hours and inventory.
The idea behind a running total is to take a column of numbers and, next to it, show the running total of those numbers. You can use both positive and negative numbers in a running total, so you can put your sales and withdrawals together if you like.
A running total is a sequence of partial sums of any given data set. A running total displays a summary of data as it grows over time. Students and professionals who use this widespread technique daily use Excel to compute and calculate an array of complex data and equations. Additionally, having a running total can save you from taking the time to record the sequence
Follow these steps to create a running total in Excel:
However, don’t highlight cells within the parentheses (by dragging the cursor over the cells you want to include in the equation), as you would if you were adding a column of numbers. Instead, you must create an “absolute reference,” followed by a “relative reference.” Don’t worry, it’s not as complicated as it sounds. The next step covers how to do it.
You must use the dollar sign in this formula, even if the numbers you’re tallying are not dollar amounts. Let’s say you want a cumulative total posted in column C:
What are these references? Relative reference points can change when you copy and paste a formula from one place to another. For instance, if you copy a formula two rows to the right, the relative reference point will shift two rows to the right. Absolute reference points don’t change when copied.
Now that you know the basic steps, let’s consider a more business-oriented example:
Let’s say you have a March sales value of $500, an April sales value of $650 and a May sales value of $700; you’ll enter these values under a “sales” column. To gain the running total:
This calculation may sound a tad complex. However, it’s actually a rather common concept that many of us come into contact with regularly — regardless of whether we are the ones using it. Here are some of the uses for a running total:
One of the most common examples of running totals involves cash registers (many of which are part of POS systems). In particular, cash registers display a running total of various products as they are scanned into the system. Additionally, they typically keep a running total of all transactions made throughout the day.
A cash register can house a reporting function that shows running totals of everyday store functions. Such functions include the number of customers at specific times of the day and the most popular items either of the day or all time, depending on the category. A running total allows retail stores to identify customer trends and improve their operations.
Sporting event scoreboards are another common application of running totals. You see every point as it hits the board to understand how the end score is calculated. In the end, though, the final score is the only number that matters.
The game of cricket, in particular, is a great example of a running total. Each time a player scores a run, it is added to the total. Therefore, the total score is simply a running total or summation of the runs.
If you work in the direct sales sector, you are likely exposed to various running totals. For example, if you have a quota, you may use a running total to track your progress until your quota has been reached. This is also true in other industries, such as telecommunications or banking; here, the number of sales, new clients and products sold can relate to job performance.
Managers can use these running totals to evaluate performance monthly, quarterly or yearly. They can also determine actual performance against targets over time. This data can then be used to troubleshoot what must change when targets are not met.
Year-to-date (YTD) calculations are another top use of running totals. A YTD calculation records a function or activity (usually financial) from a specific date to the end of the year.
For example, you may see an array of YTD calculations on your pay stubs. This is an example of a running total because it keeps track of the various payments made and taxes collected to give you a final total at the end of each year. These final totals are then transferred to appropriate payroll forms, such as W-2 forms, and used for tax purposes. YTD calculations are also used to calculate rental income, a business’s financial standing or a stock return.
Running totals also come into play for inventory management. Companies must record the number of items sold and compare that number to the number of items they have in stock; this is an example of a running total. For instance, if you have 1,000 cookies in stock at the beginning of the week, every sale would be subtracted from the overall stock, resulting in a new total after each transaction.
If you have a job that uses balance sheets, you likely work with running totals. Balance sheets can also show you a clear picture of any assets and business liabilities at a specific point in time; they can also help you track business expenses. After new items are added, you get a new total.
Your bank statement gives you an itemized list of monthly deposits and payments. After each transaction, you get a new total. When you go online to view your account, you will see your running total.
Ride-sharing companies and delivery services also employ running totals. Since drivers are often paid by the mile, a running total tracks how much someone should be paid. This is also true when creating expense spreadsheets if you must travel multiple days for work.
Running totals can also be used to count calories throughout the day or week. People who use a caloric count to lose weight can use an app or create a spreadsheet that allows them to input the calorie count of each meal to calculate days’ or weeks’ worth of calories. The app or spreadsheet will start with zero calories and create the running total based on what they eat.
Learning to use Excel or another similar spreadsheet software is essential for running a small business. Luckily, spreadsheet software has numerous features with various tips and tricks to make your life easier and more efficient. If you’re starting from square one or looking to refresh your fundamentals, countless online resources can help you learn more about Excel and its robust functionality. Microsoft Excel training videos are a great place to start.
Matt D’Angelo contributed to this article.