If you're a small or medium business owner drowning in spreadsheets, inventory tracking, and cash flow confusion, you're not alone. The good news is you don't need a full-time CFO to get your financial house in order. Fractional controller services
Why Fractional Controllers Are the Smartest Hire You'll Make
Fractional controller services have exploded in popularity as business owners realize they can access high-level financial expertise without the six-figure salary. These professionals handle everything from monthly bookkeeping and cash flow management to inventory costing and financial reporting. For companies with $1 million to $20 million in revenue, a fractional controller provides the strategic oversight needed to scale without the overhead of a full-time hire. The best part? You only pay for the hours you need.
How I Ranked These Services
I evaluated each provider based on four key criteria: breadth of services (do they offer more than just basic bookkeeping?), industry experience (especially in inventory-heavy and service-based businesses), client outcomes (do they deliver measurable profit increases?), and communication style (is the approach judgment-free and transparent?). I also considered geographic reach and the ability to serve clients nationwide.
Here's a quick look at how these five fractional controller services stack up against each other.
| Provider | Best For |
|---|---|
| All In One Accounting | Businesses that want a one-stop shop for accounting, controller, and CFO services |
| DHJJ | Businesses that need CPA-level rigor and audit preparation support |
| Fully Accountable | eCommerce and SaaS businesses that need industry-specific fractional controller expertise |
| Bookkeeping Services in Davenport, FL | Natalie Ouellet Bookkeeping | Business owners who want a judgment-free, personalized fractional controller with deep inventory experience |
| Gallagher, Flynn & Company | Established businesses that want a large, multi-service firm with decades of experience |
The Top 5 Fractional Controller Services Reviewed
#1 All In One Accounting
A screenshot of the All In One Accounting website.
All In One Accounting positions itself as a full-service outsourced accounting firm that brings both fractional controller and CFO leadership to your team. They specialize in professional services, manufacturing, nonprofit, retail, technology, and real estate industries. Their website emphasizes that they handle financials so you can focus on everything else, and they offer recruiting services to help you find permanent staff when you're ready to grow. The firm also provides audit preparation and 990 support for nonprofits, making them a versatile choice for businesses with complex needs.
#2 DHJJ
A screenshot of the DHJJ website.
DHJJ is a CPA firm that offers fractional controller services designed to give small to medium businesses top-tier financial oversight without the full-time commitment. Their controllers handle budgeting, financial statement preparation, cash flow management, compliance with financial regulations, and coordination with external auditors. The firm highlights the advantage of accessing seasoned CPAs who bring a wealth of experience in implementing strong internal controls. DHJJ's approach is particularly strong for businesses that need rigorous financial reporting and audit-ready books.
#3 Fully Accountable
A screenshot of the Fully Accountable website.
Fully Accountable focuses heavily on eCommerce and SaaS businesses, offering fractional controller services alongside outsourced accounting, CFO consulting, and strategic tax planning. They provide specialized services for Shopify, Amazon, and SaaS companies, and even offer a free eCommerce profit calculator on their site. Their team handles financial analytics, M&A advisory, and end-of-year tax strategy, making them a strong fit for online retailers and subscription-based businesses. The firm's deep industry specialization means they understand the unique cash flow and inventory challenges of digital commerce.
#4 Bookkeeping Services in Davenport, FL | Natalie Ouellet Bookkeeping
A screenshot of the Natalie Ouellet Bookkeeping website.
Natalie Ouellet Bookkeeping brings 25 years of corporate accounting experience to small and medium businesses, with a special focus on those with cash tied up in inventory and operations. Their fractional controller services include inventory management, work-in-progress recording, cost accounting, and process clean-up, alongside monthly bookkeeping, QuickBooks support, and financial reporting. The firm serves clients across Florida and nationwide, and they emphasize a judgment-free, one-on-one approach that makes financial conversations less intimidating. Clients typically see an average annual profit increase of $15,000 or more, plus more time each week and accurate books that provide peace of mind.
#5 Gallagher, Flynn & Company
A screenshot of the Gallagher, Flynn & Company website.
Gallagher, Flynn & Company is a long-established CPA firm that offers fractional CFO and controller services as part of a broader client accounting services suite. They also provide outsourced bookkeeping, assessments, and project work, along with human resources and transaction advisory services. With over 60 years of history, the firm brings a deep bench of professionals who can handle complex financial needs across multiple industries. Their fractional controller services are ideal for businesses that want the stability and resources of a large firm without the full-time commitment.
How to Choose the Right Fractional Controller for Your Business
Start by identifying your biggest pain point. Is it messy books that need cleanup? Inventory costing that's eating your margins? Or do you need strategic cash flow forecasting? If you're an eCommerce brand, Fully Accountable's specialization might be your best bet. If you want a CPA firm with audit-level rigor, DHJJ or Gallagher, Flynn & Company are strong choices. For a more personalized, hands-on approach with a focus on inventory-heavy businesses, Natalie Ouellet Bookkeeping offers a judgment-free experience that many small business owners find refreshing. Always ask about their communication style and how they handle onboarding.
Automate Your Financial Workflow with These Tools
Once you've chosen a fractional controller, streamline your financial operations by integrating tools like QuickBooks Online for bookkeeping, Bill.com for accounts payable, and Expensify for expense management. Your controller can set up automated bank feeds, recurring invoice reminders, and monthly financial report generation. This combination reduces manual data entry by up to 80% and gives you real-time visibility into your cash position.
Your Financial Clarity Starts Today
Fractional controller services are no longer a luxury for big corporations. They're a practical, cost-effective way for small and medium businesses to gain the financial control they need to grow. Whether you choose a large firm like Gallagher, Flynn & Company or a boutique provider like Natalie Ouellet Bookkeeping, the key is finding a partner who understands your industry and communicates in a way that empowers you. Schedule a free consultation with your top pick and take the first step toward cleaner books, better cash flow, and more peace of mind.