Technical Debt in Projects: What It Costs and How to Fix It

A common scenario encountered by project managers is a situation where a deadline is three days away, the feature isn’t done, and someone suggests a shortcut. It gets taken, and the feature ships.

Until six weeks later, when that shortcut causes a bug that takes twice as long to fix as doing it right would have. This is technical debt in action, and it’s silently draining velocity from projects everywhere.

In this guide, you’ll learn how to identify technical debt, calculate its real cost, and manage it before it derails your timeline. We’ve also built a Technical Debt Calculator to help you quantify the impact for stakeholder conversations.

What Is Technical Debt and Why Does It Matter?

Technical debt is work you defer now that you’ll have to complete later, usually with added effort. The term comes from software developer Ward Cunningham, who compared it to financial debt: you can borrow time today, but you’ll pay interest on that loan until you repay the principal.

For project managers, technical debt isn’t just about code. It shows up in skipped documentation, incomplete test coverage, manual workarounds that should be automated, and quick fixes that become permanent.

The debt itself isn’t always bad. Sometimes taking on debt to hit a critical deadline is the right call. The problem starts when you stop tracking it.

Like financial debt, technical debt compounds. A small shortcut in sprint one creates friction in sprint two. By sprint five, your team spends more time working around old decisions than building new features.

Velocity drops, frustration rises, and stakeholders wonder why everything takes so long. That’s the interest you’re paying on unmanaged debt.


Common Types of Technical Debt in Projects

Technical debt takes many forms beyond messy code. Understanding the categories helps you spot debt accumulating in your own projects before it becomes unmanageable.

Code debt is the most familiar type. It includes quick fixes that bypass proper architecture, copy-paste solutions, and refactoring that gets perpetually deferred. Developers often know exactly where this debt lives but lack the mandate to address it.

Documentation debt accumulates when specifications stay outdated, architecture diagrams don’t reflect reality, and critical knowledge lives only in people’s heads. This debt becomes expensive when team members leave or new developers can’t understand the system.

Testing debt shows up as gaps in test coverage, reliance on manual testing for critical paths, and flaky tests that get ignored. This debt increases the risk that bugs reach production.

Process debt happens when temporary workarounds become permanent or code reviews get skipped under deadline pressure. These shortcuts slow everything down over time.

Architecture debt is often the most expensive. It includes design decisions that solved short-term problems but limit future options.


How Debt Accumulates Under Deadline Pressure

Here’s how debt typically builds. Your team is two days from a sprint deadline, and a feature needs three more days of work.

Someone proposes a shortcut: hardcode a value that should be configurable, skip the edge case handling, write the data conversion inline instead of creating a reusable function.

The shortcut works. The feature ships. The team hits the sprint goal.

Next sprint, another feature needs that configurable value. Now someone has to find the hardcoded version, refactor it, and test the change. What would have taken an hour originally now takes half a day.

Multiply this pattern across dozens of shortcuts, and you understand why teams feel like they’re wading through mud. Their velocity isn’t dropping because they’re slower. It’s dropping because they’re paying interest on accumulated debt.


How to Calculate the Real Cost of Technical Debt

Stakeholders respond to numbers. To make the case for addressing technical debt, you need to translate it into hours, dollars, and risk. When planning your project estimates, factor in the hidden cost of existing debt.

Start by tracking workaround time. Ask your team: how many hours per sprint do you spend working around known problems instead of building new features? Even rough estimates help. If the answer is “about 15 hours per sprint across the team,” you have a baseline.

Next, calculate the cumulative cost. Use this formula:

(Workaround hours per sprint) × (Sprints remaining) = Total workaround cost

If your team spends 15 hours per sprint on workarounds and you have 10 sprints remaining, that’s 150 hours of capacity lost to debt. At $100 per hour, that’s $15,000 in hidden costs.

You can also estimate the fix cost. How long would it take to properly address the debt? If fixing the problem takes 40 hours but saves 150 hours of workarounds, the math speaks for itself. This is the kind of analysis that gets stakeholder attention.


Try the Technical Debt Calculator

Quantifying technical debt can be tricky without a structured approach. Our Technical Debt Calculator helps you estimate the real cost of debt in your project and produces a summary you can share with stakeholders.

The calculator takes four inputs: the hours your team spends on workarounds each sprint, the sprints remaining, the average hourly cost, and the hours to fix properly.

It calculates your total workaround cost and compares it to the fix cost, producing a PDF summary for stakeholder conversations.

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Calculate Your Technical Debt Cost

Quantify the real cost of technical debt and build the business case for addressing it. Input your numbers, get instant ROI analysis.

Try the Calculator →
Instant ROI calculation Break-even analysis Download PDF report

5 Strategies to Pay Down Technical Debt

Debt doesn’t disappear on its own. You need deliberate strategies to reduce it while still delivering features.

Here are five approaches that work, especially when combined with good sprint planning practices.

1. Allocate Sprint Capacity for Debt Reduction

Reserve 10-20% of each sprint specifically for paying down debt. This isn’t optional work that gets cut when things get busy. Treat it like any other commitment. Some teams call this “tech debt Tuesday” or simply build it into their velocity expectations.

2. Make Debt Visible in the Backlog

Create tickets for known debt items and estimate them like any other work. When debt lives in the backlog alongside features, it becomes part of prioritization conversations rather than an invisible drag on the team. Track it in your risk register if it poses delivery risk.

3. Tie Debt Reduction to Feature Work

When you’re building a feature that touches debt-heavy code, include cleanup as part of the feature scope. This approach is sometimes called “the boy scout rule”: leave the code better than you found it. It’s easier to justify debt work when it’s bundled with visible deliverables.

4. Prioritize by Impact

Not all debt is equally expensive. Focus first on debt that blocks future features, causes recurring bugs, or sits in code that changes frequently. Low-impact debt in stable, rarely-touched code can wait.

5. Set Debt Limits and Trigger Reviews

Define what “too much debt” looks like for your project. When workaround hours exceed 20% of sprint capacity, or when the same bug recurs three times, trigger a mandatory debt review. This prevents the slow accumulation that makes debt feel unmanageable.

When to Prioritize Debt Over Features

The hardest part of debt management is knowing when to prioritize it over new features. This comparison can help guide the conversation:

Prioritize Debt WhenPrioritize Features When
Velocity dropping sprint over sprintDebt is isolated, not spreading
Team frustration increasingCritical deadline approaching
Same bugs recurringDebt doesn’t affect current work
New features blocked by old codeStakeholder pressure is high

Neither column is automatically right. Use this as a starting point for trade-off discussions with your team and product owner.


How to Communicate Technical Debt to Stakeholders

Stakeholders rarely care about code quality for its own sake. Your job is to translate technical concepts into business terms that they understand.

The financial metaphor works well because stakeholders already understand debt and interest. Explain that the team borrowed time to hit a previous deadline, and now they’re paying interest on that loan every sprint.

Show the numbers: “We spend 15 hours per sprint on workarounds. Over the next 10 sprints, that’s 150 hours we could use for features instead.”

Frame debt reduction as risk management, not perfectionism. Point to the PMI guidance on technical risk and explain that unaddressed debt increases the probability of missed deadlines and production issues. Connect it to their concerns: “If we don’t address this, the Q3 release is at risk.”

Here’s a script that works: “Right now, our team spends about 20% of each sprint working around known problems instead of building new features.

That’s essentially a tax on every sprint. If we invest two sprints in fixing the root causes, we eliminate that tax for the remaining eight sprints. The math works in our favor.”


Conclusion

Technical debt is inevitable. Every project accumulates some debt, and sometimes taking on debt deliberately is the right call. The problem isn’t debt itself. It’s unmanaged debt that accumulates invisibly until your team is spending more time on workarounds than features.

The first step is visibility. Track workaround hours, estimate debt items in your backlog, and calculate the real cost.

Use our Technical Debt Calculator to build the business case. Once stakeholders see the numbers, the conversation shifts from “why should we fix old code” to “how quickly can we pay this down.”


FAQs

What is technical debt in simple terms?

Technical debt is work you skip now that you’ll have to do later, with interest. Like financial debt, small shortcuts compound over time into larger problems that slow down your team and increase project risk. The term applies to code, documentation, testing, and processes.

How much technical debt is acceptable?

Most healthy projects carry some debt. The key is visibility and control. If debt consumes more than 20% of sprint capacity or blocks new features, it needs immediate attention. Track it like any other risk and review it regularly with your team.

Who is responsible for managing technical debt?

Technical debt is a shared responsibility. Developers identify and estimate it, product owners prioritize it against features, and project managers track its impact on timelines. The PM’s role is making debt visible and ensuring it’s part of planning conversations rather than an afterthought.

Can you eliminate technical debt completely?

No, and you shouldn’t try. Some debt is strategic, taken deliberately to meet a deadline with a plan to repay. The goal is managing debt intentionally rather than letting it accumulate unnoticed until it causes problems. Zero debt often means you’re over-engineering.

How do I convince stakeholders to prioritize technical debt?

Frame debt in business terms: velocity trends, bug rates, and delivery risk. Show the cost of delay versus the cost of fixing using concrete numbers from your tracking. Stakeholders respond to data and risk, not technical details. The financial metaphor of debt and interest resonates.


Tuyota Manuwa [SAFe, CSM, PSM, Agile PM, PRINCE2]
Tuyota Manuwa [SAFe, CSM, PSM, Agile PM, PRINCE2]

Tuyota is a certified Project Manager and Scrum Master with extensive experience in Project Management, PMO leadership, and Agile transformation across Consulting, Energy, and Banking sectors.

He specializes in managing complex programmes, project governance, risk management, and coaching teams through merger initiatives and organizational change.

He enjoys using his Project Management expertise and Agile skills to coach and mentor experienced and aspiring professionals in project delivery excellence while building high-performing, self-organizing teams.

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