What Does a Financial Controller Do? Roles, Responsibilities, and When to Hire One

6 min read

As your business grows, managing its finances becomes more complicated. More customers, employees, transactions, and expenses create greater demands on your accounting team. And while a bookkeeper may have been able to handle your financial records in the early days, growing businesses eventually need more oversight.

That's where a financial controller comes in.

A controller helps ensure your financial information is accurate, your accounting processes are efficient, and your business has the reporting it needs to make informed decisions.

But what exactly does a controller do? How is the role different from a bookkeeper or CFO? And when does it make sense to hire one?

Understanding where a controller fits into your accounting team can help you build a stronger financial foundation without hiring more people than your business needs.

What Is a Financial Controller? 

A financial controller is a senior accounting professional responsible for overseeing a company's accounting operations and ensuring the accuracy and reliability of its financial information.

Think of a controller as the person responsible for making sure your accounting department runs the way it should.

While a bookkeeper records financial activity, a controller oversees the processes that turn those transactions into accurate financial statements and useful management reports.

Controllers establish accounting procedures, review financial records, manage the month-end close, implement internal controls, and help business owners understand their financial performance.

For growing businesses, this oversight becomes increasingly important as transaction volumes rise, operations become more complex, and leadership needs more detailed financial information.

What Does a Financial Controller Do? 

A controller's responsibilities vary depending on the size and structure of the business, but typically include:

• Overseeing financial reporting: Ensuring financial statements are accurate, complete, and delivered on time.
• Managing the month-end close: Establishing a consistent process for reconciliations, adjustments, and financial reporting.
• Supervising the accounting team: Reviewing work, assigning responsibilities, and maintaining accountability.
• Establishing accounting policies and procedures: Creating standardized processes that improve accuracy and efficiency.
• Implementing internal controls: Reducing the risk of errors, fraud, and unauthorized financial activity.
• Monitoring financial performance: Reviewing financial statements, identifying discrepancies, and helping leadership understand business results.
• Improving accounting systems: Identifying opportunities to automate manual tasks, streamline workflows, and strengthen financial reporting.
• Supporting compliance: Maintaining appropriate financial records and accounting procedures while coordinating with tax professionals, auditors, and other advisors as needed.

The controller's job goes beyond making sure the books balance. It's about building an accounting operation that business owners can depend on.

Financial Controller vs. Bookkeeper vs. CFO: What's the Difference?

Bookkeepers, financial controllers, and CFOs each play an important role in managing a company's finances, but their responsibilities differ.

• Bookkeepers manage day-to-day financial transactions, including recording expenses, reconciling accounts, and maintaining financial records.
• Financial controllers oversee accounting operations, ensure accurate financial reporting, establish internal controls, and manage the accounting team.
• CFOs focus on financial strategy, long-term planning, and helping leadership make decisions that support business growth.

In smaller businesses, these responsibilities often overlap. However, expecting one person to handle everything from daily bookkeeping to high-level financial strategy can create inefficiencies and leave important responsibilities uncovered.

The goal isn't necessarily to hire someone for every position. It's to ensure your business has the right expertise and support at each level.

Read More: When You Need a Bookkeeper vs an Accountant vs. Controller vs. a CFO

5 Ways to Set Your Financial Controller Up for Success

Hiring an experienced controller can improve your financial operations, but the position alone won't solve every accounting challenge.

Business owners also need to create an environment where the controller can focus on the responsibilities that deliver the greatest value.

Here are five ways to get more from the controller role.

1. Clearly Define the Controller's Responsibilities

Before hiring a controller or evaluating your existing accounting team, determine what you actually need the role to accomplish.

Are financial statements consistently late? Do you need stronger internal controls? Are your accounting processes inefficient? Do you lack confidence in your financial reports?

These challenges are well suited to controller-level oversight.

However, if your primary need is entering transactions, processing invoices, or reconciling accounts, you may need additional bookkeeping support.

Likewise, if you're looking for someone to lead financing strategy, evaluate acquisitions, or develop a long-term financial plan, you may need CFO-level expertise.

When responsibilities aren't clearly defined, businesses often end up paying senior-level professionals to perform administrative tasks or expecting them to deliver expertise outside their primary role.

What to look for: A controller who can explain which responsibilities they own, how they measure success, and what support they need from the rest of the accounting team.

2. Give Your Controller the Right Accounting Team

One of the biggest mistakes a growing business can make is hiring a controller and expecting that person to handle everything.

A controller shouldn't spend most of the day entering bills, chasing receipts, or performing routine bookkeeping tasks.

Those responsibilities are important, but they leave little time for reviewing financial statements, improving processes, or providing meaningful oversight.

An effective accounting structure distributes work according to the expertise required.

Bookkeepers manage routine financial activity. Accountants handle more complex accounting tasks and reconciliations. The controller oversees the process, reviews the results, and ensures financial information is reliable.

This structure allows each person to focus on the work where they add the most value.

What to look for: A controller who knows how to delegate, supervise accounting work, and establish accountability rather than becoming the single person responsible for every financial task.

3. Reduce Your Dependence on One Person

What happens if your controller takes an extended leave or unexpectedly leaves the company?

If one person understands your accounting systems, reporting processes, and financial records, their absence can create significant disruption.

This is known as key-person risk, and it's especially common in small and growing businesses with lean accounting departments.

A strong controller should help reduce this risk by documenting procedures, establishing consistent workflows, cross-training team members, and maintaining appropriate access controls.

Your business should be able to continue processing transactions, closing the books, and producing financial reports even when an individual employee is unavailable.

This is one reason a team-based accounting model can be valuable. Rather than relying entirely on one employee's knowledge, responsibilities and institutional knowledge are shared across qualified professionals.

What to look for: Documented accounting procedures, clear ownership of recurring tasks, appropriate separation of duties, and a continuity plan that keeps the accounting function operating during staff changes.

4. Prioritize Technology and Process Improvement

As businesses grow, inefficient accounting processes become more expensive and difficult to manage.

Manual data entry, disconnected systems, inconsistent approvals, and spreadsheet-based workarounds can slow down reporting and increase the likelihood of errors.

A controller should regularly evaluate how financial information moves through the business and identify opportunities to improve efficiency.

That might include integrating accounting software with other business applications, automating repetitive tasks, standardizing approval workflows, or improving the month-end close process.

Technology alone won't solve accounting problems. The underlying processes need to be accurate, consistent, and well managed.

What to look for: A controller who understands accounting technology, can identify inefficient workflows, and prioritizes improvements that make financial information more accurate and accessible.

5. Establish a Roadmap for Growth

Your accounting needs today may look very different a year or two from now.

Adding employees, expanding services, opening locations, or increasing transaction volume can introduce new reporting requirements and operational challenges.

A controller should help ensure your accounting infrastructure can keep pace.

That means regularly evaluating whether your current systems, processes, team structure, and financial reporting still support the business.

It also means establishing a consistent reporting schedule and helping leadership understand the financial information being produced.

For example, as a service business grows, leadership may need more detailed visibility into profitability by customer, project, or service line. A controller can help ensure transactions are classified correctly and reporting processes are structured to support that analysis.

This creates a stronger foundation for budgeting, cash planning, and strategic decisions.

What to look for: A controller who understands your business goals, anticipates changes in accounting requirements, and helps build processes that can scale as your company grows.

When Does a Growing Business Need a Financial Controller?

There's no specific revenue threshold for hiring a controller. The need typically arises when a business's financial operations become too complex for its existing accounting team.

Signs you may need controller-level oversight include:

• Financial statements are frequently late or inaccurate.
• The business owner regularly steps in to review or correct bookkeeping.
• Accounting processes haven't kept pace with growth.
• Financial reports lack the detail needed to evaluate profitability.
• Internal controls are inadequate, or too much responsibility rests with one employee.

If these challenges sound familiar, adding another bookkeeper may not be enough. Your business may need more experienced accounting oversight.

Why Hiring a Full-Time Controller Can Be Challenging

Experienced controllers bring specialized accounting, management, and financial reporting expertise, making them difficult and expensive to hire.

For growing businesses, the need for this expertise often develops before there's enough work or budget to justify a full-time position. And even with a controller on staff, you'll still need bookkeeping and accounting support.

Without the right team, businesses risk paying a senior-level professional to handle routine transactions rather than focusing on financial oversight and process improvement.

Outsourced Controller Services: A Team-Based Approach

Outsourced controller services provide experienced financial oversight without the cost and commitment of a full-time hire.

At GrowthForce, our outsourced accounting teams combine bookkeeping, accounting, controller-level oversight, and management reporting to meet each business's needs.

Our team-based approach provides:

• Accurate, timely financial reporting through consistent month-end close processes and financial statement reviews.
• Stronger financial controls to reduce errors, improve accountability, and protect your business.
• Better financial visibility through management reporting and KPI analysis.
• Reliable accounting support that reduces dependence on any single employee.
• Scalable expertise that adapts as your business grows.

With experienced professionals overseeing your accounting operations, you can focus on running your business with greater confidence in your financial information.

Ready to strengthen your accounting team?

This content is for informational purposes only and should not be considered financial, legal, or tax advice. Contact a qualified professional for guidance tailored to your business.

Frequently Asked Questions About Financial Controllers

What is the main responsibility of a financial controller?

A financial controller oversees a company's accounting operations and ensures its financial records and reports are accurate, reliable, and timely. The role typically includes managing the month-end close, supervising accounting processes, implementing internal controls, and reviewing financial statements.

Does a small business need a controller?

A small business may need controller-level oversight when its accounting operations become too complex for basic bookkeeping alone. Common signs include late financial reports, inconsistent accounting processes, limited financial visibility, and increased transaction volume.

What's the difference between a controller and a CFO?

A controller primarily focuses on accounting operations, financial reporting, and internal controls. A CFO focuses on broader financial strategy, including long-term planning, financing, and major business decisions. The responsibilities can overlap in smaller organizations, but they serve different purposes.

Can a business outsource its financial controller?

Yes. Outsourced controller services allow businesses to access experienced accounting oversight without hiring a full-time employee. Some providers also offer bookkeeping, accounting, and management reporting services as part of a broader outsourced accounting team.