A Practical Project Management Guide

How to Keep a Project on Budget

Projects can quickly become expensive when costs aren't tracked carefully.

A task takes longer than expected. A supplier charges more than planned. Extra work gets added to the project. Before you know it, the budget is under pressure.

So, how do you keep a project on budget?

Effective project budget management starts before the project begins. You need a realistic budget, clear responsibilities, accurate cost estimates and regular monitoring throughout the project.

In this guide, we'll look at how to keep a project on budget, how to track project costs and how project management software can help you manage spending and avoid unnecessary cost overruns.

What Does It Mean to Keep a Project on Budget?

A project is on budget when the cost of delivering the agreed project outcome stays within the approved budget.

That doesn't mean every individual task will cost exactly what you originally estimated.

Project costs can change as work progresses.

The important thing is knowing when costs are changing, understanding why and taking action before a small increase becomes a much bigger problem.

Keeping a project on budget means actively managing costs throughout the project rather than checking the final numbers when the work is already complete.

Why Do Projects Go Over Budget?

There are many reasons why a project might cost more than expected.

Some of the most common include:

• Unrealistic cost estimates
• Unexpected project risks
• Scope creep
• Resource costs increasing
• Tasks taking longer than expected
• Supplier or contractor costs changing
• Unexpected technical problems
• Changes to project requirements
• Poor project cost tracking
• Additional work being added without adjusting the budget

The earlier you identify these problems, the more options you have for dealing with them.

1. Create a Realistic Project Budget

The first step in project budget management is creating a realistic budget.

Your project budget should give you a clear idea of how much the project is expected to cost and where that money will be spent.

Depending on the project, your budget may include:

• Staff and resource costs
• Contractor costs
• Software and technology
• Equipment
• Materials
• Marketing or advertising
• Travel
• Supplier costs
• Contingency for unexpected costs

A realistic budget gives the project team something they can actually work towards.

If the original budget is unrealistic, keeping the project on budget becomes difficult from the beginning.

2. Break the Project Into Smaller Tasks

It's much easier to estimate and track costs when a project is broken into smaller pieces of work.

Instead of having one large project cost, you can estimate the cost of individual tasks, phases or deliverables.

This also makes it easier to understand where money is being spent.

For each task, consider:

• Who will complete the work?
• How long should it take?
• What resources are needed?
• Are there any additional costs?
• Does the task depend on another task?

Clear task planning can help create more accurate project cost estimates.

Plan and manage your project tasks with CombinedWork.

3. Estimate Project Costs Carefully

Accurate cost estimates are an important part of project budgeting.

Try to avoid simply guessing how much something will cost.

Use previous projects, supplier quotes, known resource costs and realistic estimates where possible.

It's also worth considering what could cause the original estimate to change.

For example, a task estimated to take two days could take four days if there is a technical problem or a dependency is delayed.

Understanding these possibilities can help you create a more realistic budget.

4. Track Actual Costs Against the Budget

Creating a budget is only the beginning.

You also need to know how much the project is actually costing as the work progresses.

Project cost tracking allows you to compare planned costs with actual spending.

This can help you identify differences before they become serious.

For example:

• Planned cost: £5,000
• Actual cost so far: £5,500
• Difference: £500

A £500 difference may not be a major problem on every project, but it is something that should be understood.

Ask why the cost has increased and whether it is likely to affect the rest of the project.

Track project progress and project performance with CombinedWork.

5. Monitor Resource Costs

People are often one of the biggest costs in a project.

If a project takes longer than expected, resource costs can increase quickly.

That's why project managers should keep an eye on how much time is being spent on different areas of the project.

Ask:

• Are tasks taking longer than expected?
• Are resources being used efficiently?
• Has additional resource been required?
• Are the right people working on the right tasks?
• Could delays increase resource costs?

Monitoring resource usage can help identify potential budget problems early.

6. Watch for Scope Creep

Scope creep is one of the most common reasons projects can become more expensive.

It happens when additional work is added to a project without properly considering the effect on time, resources and cost.

A request might seem small on its own.

But several small requests can quickly become a significant amount of extra work.

Before accepting a change, consider:

• How much extra work will it create?
• Will it require additional resources?
• Will it affect the deadline?
• Will it increase the project cost?
• Does the project budget need to change?

Good change management helps protect the original project budget.

7. Track Project Progress as Well as Costs

Budget tracking shouldn't happen separately from project tracking.

If the project is behind schedule, costs may increase.

For example, if a team needs to spend another two weeks completing work that was originally expected to take one week, additional resource costs could follow.

That's why project progress tracking and cost management should work together.

Keeping track of tasks, deadlines, milestones and project progress can help you understand what is happening with the budget.

If you're interested in improving project tracking, read our guide on how to keep a project on track.

8. Identify Budget Risks Early

Every project has financial risks.

A supplier could increase their prices. A technical problem could require extra work. A key team member could become unavailable.

These risks don't always cause problems, but they should be considered during the planning process.

Common project budget risks include:

• Unexpected supplier costs
• Additional resource requirements
• Delayed project delivery
• Changing requirements
• Technical issues
• Unexpected materials or equipment costs

Identifying risks early gives you more time to decide how they should be managed.

Manage project risks and issues with CombinedWork.

9. Set Aside Contingency for Unexpected Costs

Even the best project plan can't predict everything.

Unexpected costs can appear during almost any project.

A contingency can provide some flexibility if costs change or an unexpected problem occurs.

The right amount will depend on the project, its risks and the organisation's approach to budgeting.

The important point is to understand what your contingency is intended for and avoid treating it as extra money that can automatically be spent.

10. Set Clear Spending Responsibilities

It should be clear who is responsible for managing and approving project spending.

Without clear ownership, costs can become difficult to track.

Make sure the project team understands:

• Who can approve spending
• Who monitors the budget
• Who approves changes
• Who reports financial issues
• Who needs to be informed about significant changes

Clear responsibilities make it easier to spot and manage unexpected costs.

11. Review the Budget Regularly

Don't wait until the end of the project to review the budget.

Regular project budget tracking gives you a much clearer view of how spending is changing over time.

Depending on the project, you might review the budget weekly, monthly or at key project milestones.

During each review, look at:

• Planned spending
• Actual spending
• Remaining budget
• Upcoming costs
• Potential risks
• Changes to the project scope

Regular reviews give you time to act before a project goes significantly over budget.

12. Forecast the Final Project Cost

Looking at what you've already spent isn't enough.

You also need to consider what the project is likely to cost by the time it is finished.

This is where project cost forecasting can help.

Ask:

• How much has already been spent?
• How much work remains?
• What costs are still expected?
• Have any costs increased?
• Are there new risks that could affect the budget?

This gives you a better understanding of whether the current budget is likely to be enough.

13. Manage Changes Before They Affect the Budget

Changes are a normal part of project management.

However, every change should be considered carefully.

A change that adds work can also add time, resources and cost.

Before approving a change, understand its impact on the wider project.

This is another reason why clear project planning and regular project tracking are so important.

For more information about managing successful projects, read our guide on what makes a project successful.

14. Keep Stakeholders Updated About the Budget

Budget information shouldn't be hidden until there is a problem.

Stakeholders should understand the financial position of the project and be aware of significant changes.

Regular project reporting might include:

• Current project spend
• Remaining budget
• Upcoming costs
• Budget risks
• Changes to scope
• Forecast final cost

Clear reporting makes it easier to have informed conversations when decisions need to be made.

Simplify project reporting with CombinedWork.

15. Use Project Management Software to Track Your Budget

Managing a project budget becomes harder when information is spread across multiple systems.

You might have your budget in a spreadsheet, tasks in another platform, project updates in email and important decisions in chat messages.

This makes it harder to see the relationship between project progress, tasks, deadlines, risks and costs.

The right project management software can bring project information together and give teams better visibility.

It can help you manage:

• Project tasks
• Deadlines
• Project progress
• Milestones
• Risks and issues
• Project reporting
• Project performance

CombinedWork gives teams one central place to plan projects, manage tasks, track progress and report on performance.

Keeping this information connected can make it easier to identify problems that could affect project costs and take action early.

What to Do If Your Project Is Already Over Budget

If a project has already gone over budget, the first step is to understand why.

Don't simply reduce spending without understanding what caused the problem.

Look at:

• Which costs are higher than expected
• Which tasks have taken longer
• Whether the project scope has changed
• Whether additional resources were required
• Whether there are still unnecessary costs
• How much work remains

Once you understand the cause, you can look at the available options.

You may need to change priorities, reduce lower-value work, adjust the timeline, review resources or discuss additional budget with stakeholders.

The right response will depend on the individual project and why the budget has changed.

How to Avoid Going Over Budget on a Project

If you want to reduce the risk of a project going over budget, focus on the basics:

• Create a realistic project budget
• Estimate costs carefully
• Track actual spending
• Monitor resource usage
• Control project scope
• Track project progress
• Identify budget risks early
• Review spending regularly
• Forecast future costs
• Communicate budget changes
• Use the right project management tools

The key is to manage the budget throughout the project rather than treating it as something you only review at the end.

How to Keep a Project on Budget: Simple Checklist

Use this checklist throughout your project:

• Do we have a realistic project budget?
• Have we estimated the main project costs?
• Does every task have an owner?
• Are we tracking actual costs?
• Are we monitoring resource usage?
• Are we controlling scope creep?
• Are we tracking project progress?
• Have we identified budget risks?
• Do we have appropriate contingency?
• Are we reviewing the budget regularly?
• Are we forecasting the final project cost?
• Are stakeholders aware of important budget changes?
• Do we have the right project management software?

Final Thoughts

Knowing how to keep a project on budget isn't about never spending more than your original estimate on an individual task.

It's about understanding your costs, tracking what is happening and responding quickly when something changes.

Good project budget management starts with realistic planning and continues throughout the entire project.

Clear responsibilities, accurate cost estimates, regular project tracking, risk management and strong communication can all help teams manage project costs more effectively.

The right project management software can also give teams better visibility by bringing project tasks, progress, risks and reporting together in one place.

CombinedWork helps teams plan projects, manage tasks, track progress and report on project performance in one place.

If you're looking for a clearer way to manage your projects, explore CombinedWork.

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