Customer churn is inevitable, but it's what you do with the opportunity that matters. Miguel Tovar/University of Houston

Think of customer churn as a robust balloon, ready to touch the sky as soon as you let go. Every day you hold on to that balloon, air molecules will diffuse through the knot. Your balloon will become flabby. This exodus of air is known in business as a churn. Customer churn is the amount of customers that your company loses during a specific time frame. Canceled subscribers, dissatisfied clientele, or customers that just found a better alternative. Keeping track of churn is a vital part of your company's continued growth. Doing so will give you the brutal truth regarding customer retention.

It's difficult to measure the success of your startup without keeping track and analyzing your shortcomings as well. Sure, you want 100 percent customer retention. But even a company that has figured out how to stop the aging process will not have such an unrealistic rate. Losing customers is part of the game. However, you don't have to let it kill your company. You can learn from it.

Measuring customer churn rate

You can measure your churn rate by subtracting lost patronage from the number of customers you had to start a period. So, if you started off the month or quarter with 1,000 customers, and end up with 500 at the end of that period, your churn rate is 50 percent. You lost 50 percent of your customers. Ouch. Unless your company decides to go into selling raincoats in the Sahara, it is doubtful your churn rate will be that high. But you understand how it's calculated now.

So, why is customer churn so important? Well, for starters, the cost of acquiring new customers is 25 times higher than the cost of retaining the ones you already have. Further, research has determined that a mere five percent rise in retention rates can boost profits upwards of 25 percent.

Curb your churn

There are a few ways to curb customer churn.

One way is to concentrate on your most loyal customers. One of the biggest gripes against Comcast is that they offer so many special rates to new customers, and almost nothing for their long-time customers. The same was said about Uber until they recently launched Uber Gold. How many "special deals for first time customers" do you see with phone service companies? Tons. It would be more advantageous to focus your resources on your loyal customers. Give them another reason to stay. After all, as we just covered, it's cheaper for your company to retain them than to get new customers.

Another way to reduce churn rates is to track and analyze it every fiscal quarter. This analysis can help you understand why exactly customers are leaving. You can even detect patterns to show at what point in their patronage they are leaving. All this data can be used to make better decisions about improving your company's services or products.

Listen to fleeing customers

Speaking of making better decisions for your company, the best way to do that is to talk to the customer. When you were in high school, you probably had "intel" on your crushes to see if they liked you back. You probably spent months agonizing over what they meant by this text or that comment. In retrospect, you probably now know it would have been so much easier to just ask. Letting the customer be your compass will steer your company in the right direction. Lapsed customers will almost always be honest with you. What have they got to lose? They will tell you straight up what they didn't like and why they didn't like it. With a large enough sample size, you'll soon have a good idea about what you could be doing better to keep your current customers from fleeing your company like it's Blockbuster. No offense to Blockbuster.

In summary, keeping the customers you have is just as important as winning over new ones. It's harder to put air into an already knotted balloon than it is to just keep the air it already has inside. If you focus on keeping your customers, much like that air-filled balloon, sky's the limit.

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This article originally appeared on the University of Houston's The Big Idea.

Rene Cantu is the writer and editor at UH Division of Research.

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3 Houston innovators who made headlines in May 2025

Innovators to Know

Editor's note: Houston innovators are making waves this month with revolutionary VC funding, big steps towards humanoid robotics, and software that is impacting the agriculture sector. Here are three Houston innovators to know right now.

Zach Ellis, founder and partner of South Loop Ventures

Zach Ellis. Photo via LinkedIn

Zach Ellis Jr., founder and general partner of South Loop Ventures, says the firm wants to address the "billion-dollar blind spot" of inequitable distribution of venture capital to underrepresented founders of color. The Houston-based firm recently closed its debut fund for more than $21 million. Learn more.

Ty Audronis, CEO and founder of Tempest Droneworx

Ty Audronis, CEO and founder of Tempest Droneworx

Ty Audronis, center. Photo via LinkedIn.

Ty Audronis and his company, Tempest Droneworx, made a splash at SXSW Interactive 2025, winning the Best Speed Pitch award at the annual festival. The company is known for it flagship product, Harbinger, a software solution that agnostically gathers data at virtually any scale and presents that data in easy-to-understand visualizations using a video game engine. Audronis says his company won based on its merits and the impact it’s making and will make on the world, beginning with agriculture. Learn more.

Nicolaus Radford, CEO of Persona AI

Nicolaus Radford, founder and CEO of Nauticus RoboticsNicolaus Radford. Image via LinkedIn

Houston-based Persona AI and CEO Nicolaus Radford continue to make steps toward deploying a rugged humanoid robot, and with that comes the expansion of its operations at Houston's Ion. Radford and company will establish a state-of-the-art development center in the prominent corner suite on the first floor of the building, with the expansion slated to begin in June. “We chose the Ion because it’s more than just a building — it’s a thriving innovation ecosystem,” Radford says. Learn more.

Houston university to launch artificial intelligence major, one of first in nation

BS in AI

Rice University announced this month that it plans to introduce a Bachelor of Science in AI in the fall 2025 semester.

The new degree program will be part of the university's department of computer science in the George R. Brown School of Engineering and Computing and is one of only a few like it in the country. It aims to focus on "responsible and interdisciplinary approaches to AI," according to a news release from the university.

“We are in a moment of rapid transformation driven by AI, and Rice is committed to preparing students not just to participate in that future but to shape it responsibly,” Amy Dittmar, the Howard R. Hughes Provost and executive vice president for academic affairs, said in the release. “This new major builds on our strengths in computing and education and is a vital part of our broader vision to lead in ethical AI and deliver real-world solutions across health, sustainability and resilient communities.”

John Greiner, an assistant teaching professor of computer science in Rice's online Master of Computer Science program, will serve as the new program's director. Vicente Ordóñez-Román, an associate professor of computer science, was also instrumental in developing and approving the new major.

Until now, Rice students could study AI through elective courses and an advanced degree. The new bachelor's degree program opens up deeper learning opportunities to undergrads by blending traditional engineering and math requirements with other courses on ethics and philosophy as they relate to AI.

“With the major, we’re really setting out a curriculum that makes sense as a whole,” Greiner said in the release. “We are not simply taking a collection of courses that have been created already and putting a new wrapper around them. We’re actually creating a brand new curriculum. Most of the required courses are brand new courses designed for this major.”

Students in the program will also benefit from resources through Rice’s growing AI ecosystem, like the Ken Kennedy Institute, which focuses on AI solutions and ethical AI. The university also opened its new AI-focused "innovation factory," Rice Nexus, earlier this year.

“We have been building expertise in artificial intelligence,” Ordóñez-Román added in the release. “There are people working here on natural language processing, information retrieval systems for machine learning, more theoretical machine learning, quantum machine learning. We have a lot of expertise in these areas, and I think we’re trying to leverage that strength we’re building.”