Biggest mistake in Sprint Planning


The Biggest Mistake in Sprint Planning: How to Avoid It


In my experience as a professional Scrum Trainer, I’ve seen many teams struggle with Sprint Planning. It’s a critical part of the Scrum process, yet it’s fraught with challenges. One of the most recurring and detrimental mistakes teams make is planning beyond their capacity to deliver. This mistake can derail a Sprint, erode team confidence, and undermine the entire Scrum process.

What Is Sprint Planning?

Sprint Planning is the initial event in a Sprint where the Scrum Team discusses what can be delivered in the upcoming Sprint and how that work will be achieved. The meeting is collaborative and involves the entire team, including the Scrum Master and Product Owner.

The Common Pitfall: Overcommitting

Overcommitting Explained

One of the most common mistakes I’ve seen in Sprint Planning is teams overcommitting to work. This occurs when teams:

  • Plan beyond their capacity: They take on more work than they have historically completed in previous Sprints.
  • Ignore emergent work: They fail to leave space for unplanned tasks or issues that arise during the Sprint.
  • Overlook vacations and absences: They don’t account for team members’ planned time off or other commitments.

Real-Life Example

I’ve witnessed teams who typically complete around six Product Backlog Items (PBIs) in a Sprint suddenly decide they can handle 18. This decision often comes without any substantial changes in team size, skills, or resources. The rationale behind this sudden increase is usually unknown, even to the team itself.

The Consequences of Overcommitting

Erosion of Confidence

When teams overcommit and subsequently fail to deliver, it leads to a breakdown in confidence. This self-sabotage can have several negative effects:

  • Loss of trust in the process: The team starts doubting the effectiveness of the Scrum framework.
  • Decreased morale: Team members feel disheartened and frustrated when they consistently miss their targets.
  • Pressure and stress: Overcommitting increases stress levels, leading to burnout and decreased productivity.

Breaking the Cycle

It’s crucial to break this cycle of overcommitting and underdelivering. Here’s how:

  • Underpromise and overdeliver: Set realistic goals that the team can confidently achieve, and if possible, exceed those expectations.
  • Reflect on past performance: Use historical data to inform future Sprint commitments. If the team has consistently completed six PBIs, plan for a similar amount.
  • Factor in uncertainties: Always leave some buffer for emergent work, unplanned tasks, and absences.

Practical Steps to Avoid Overcommitting

1. Use Historical Data

Leverage past Sprint data to make informed decisions about the team’s capacity. This data provides a realistic view of what the team can achieve based on their past performance.

  • Review previous Sprints: Analyze the number of PBIs completed in past Sprints.
  • Adjust for variables: Consider any changes in team composition, skills, or external factors.

2. Include Buffer Time

Always include some buffer time in your Sprint Planning to accommodate unexpected work. This could be emergent tasks, technical issues, or other unforeseen challenges.

  • Allocate 10-20% buffer: This can vary depending on the nature of your work and past experiences.
  • Communicate openly: Ensure the team understands the importance of this buffer and supports it.

3. Consider Team Availability

Account for any planned absences, vacations, or other commitments team members might have during the Sprint. This ensures that the team’s actual capacity is accurately reflected.

  • Update the calendar: Keep a shared calendar with all team members’ availability.
  • Discuss in planning: Bring up any planned absences during Sprint Planning to adjust workload accordingly.

4. Foster Open Communication

Encourage open communication within the team about their capacity and any concerns they might have regarding the Sprint goals.

  • Daily Stand-ups: Use these meetings to discuss progress and any potential blockers.
  • Retrospectives: Reflect on what went well and what didn’t at the end of each Sprint to continuously improve.

Personal Experience: Lessons Learned

In my journey as a Scrum Trainer, I’ve worked with numerous teams and observed firsthand the impact of overcommitting. One particular team stands out in my memory. They were enthusiastic and driven but consistently overcommitted. Despite repeated advice and reminders, they set overly ambitious goals, leading to a series of failed Sprints.

Turning the Tide

After several frustrating cycles, we decided to take a step back and thoroughly review their approach. We focused on:

  • Setting realistic goals: We used historical data to set achievable Sprint goals.
  • Improving communication: We fostered a culture of open and honest communication.
  • Introducing buffer time: We ensured every Sprint plan included buffer time for unexpected work.

Over time, this team transformed. They started achieving their Sprint goals, which boosted their confidence and morale. They embraced the principle of underpromising and overdelivering, leading to more successful Sprints and a stronger, more cohesive team.

Recommendations for Successful Sprint Planning

1. Set Realistic Goals

Ensure the goals set during Sprint Planning are realistic and based on the team’s capacity and past performance.

  • Be conservative: It’s better to set conservative goals and exceed them than to overcommit and fall short.
  • Involve the whole team: Ensure everyone has a say in the planning process and agrees with the goals.

2. Continuously Improve

Use retrospectives and feedback to continuously improve your Sprint Planning process.

  • Reflect and adapt: Learn from each Sprint and adjust your planning process accordingly.
  • Celebrate successes: Recognize and celebrate when the team meets or exceeds their goals.

3. Emphasize Team Collaboration

Foster a collaborative environment where team members feel comfortable sharing their thoughts and concerns.

  • Encourage participation: Make sure everyone is involved in the planning process.
  • Support each other: Build a supportive team culture where members help each other succeed.


Avoiding the pitfall of overcommitting during Sprint Planning is crucial for any Scrum team’s success. By setting realistic goals, considering uncertainties, and fostering open communication, teams can enhance their productivity and morale. Remember, underpromise and overdeliver – it’s a strategy that not only boosts confidence but also leads to more successful and satisfying Sprints.

🚀 Let’s make our Sprint Planning sessions more effective and ensure we achieve our goals consistently. Happy Sprinting!

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