If you’re an Amazon FBA seller, managing your finances effectively can be complex, especially with the unique challenges posed by Amazon’s fee structures, sales tax compliance, and inventory management. Specialized accounting services are crucial for ensuring accurate bookkeeping, reducing tax liabilities, and staying compliant with regulations.
In this guide, we highlight the 10 best accounting firms that offer tailored services to help Amazon FBA sellers optimize their financial operations and grow their businesses.
What Are Amazon FBA Accounting Services?
Amazon FBA accounting services are specialized solutions for businesses using Amazon’s Fulfillment by Amazon (FBA) program. These services address the unique financial challenges of FBA, such as managing bi-weekly settlement reports, tracking fees, calculating Cost of Goods Sold (COGS), and ensuring sales tax compliance across multiple states.
What Is Amazon FBA?
Amazon FBA (Fulfillment by Amazon) is a service where sellers send their products to Amazon’s warehouses, and Amazon takes care of storage, packing, shipping, customer service, and returns. This allows sellers to scale their business without handling logistics themselves, while also introducing unique financial complexities such as fees, inventory tracking, and multi-state tax obligations that require specialized accounting.
Key aspects of Amazon FBA include:
• Storage Fees: Amazon charges monthly and long-term storage fees based on the volume of inventory held in its warehouses.
• Fulfillment Fees: Per-unit fees covering the picking, packing, and shipping of each order to the customer.
• Referral Fees: A percentage Amazon takes from each sale, depending on the product category.
• Bi-weekly Settlement Reports: Amazon disburses payments every two weeks, combining sales, refunds, and various fee deductions into a single deposit that must be carefully reconciled.
• Multi-State Inventory: Amazon distributes your inventory across multiple fulfillment centers nationwide, potentially creating sales tax nexus in multiple states.
How Does Amazon FBA Work?
Understanding the FBA workflow is essential for appreciating why specialized accounting is so critical:
Step 1 – Send Inventory to Amazon:
Sellers ship their products to Amazon’s designated fulfillment centers, where Amazon stores the inventory and tracks stock levels.
Step 2 –Customer Places an Order:
When a customer purchases a product, Amazon automatically picks the product from its warehouse.
Step 3 – Amazon Packs and Ships:
Amazon handles all packaging and shipping logistics, including express delivery options like Prime.
Step 4 –Customer Service & Returns:
Amazon manages customer inquiries, returns, and refunds, reducing the seller’s operational workload.
Step 5 – Settlement & Payment:
Every two weeks, Amazon disburses earnings to the seller after deducting all applicable fees, reimbursements, and adjustments.
Each step generates financial data that must be accurately tracked and categorized, which is why specialized Amazon FBA accounting is essential.
Why Amazon Sellers Need Specialized Accounting Services
Amazon’s financial ecosystem requires specialized expertise, and traditional accountants often lack the knowledge to navigate it effectively. Here’s why Amazon sellers need specialized accounting services:
• Amazon’s bi-weekly deposits require expertise to reconcile.
• Multiple fees need accurate categorization for true margin calculation.
• Storing inventory across states creates complex tax obligations.
• FBA-specific costs like shipping and prep aren’t captured by standard accounting methods.
• Traditional CPAs may misinterpret Amazon-specific data, causing costly errors.
• Amazon reimbursements for lost or damaged inventory are frequently missed without specialized oversight.
• Accurate COGS calculation requires tracking inventory costs tied to FBA-specific workflows.
With these unique challenges, it’s essential for Amazon FBA sellers to partner with accounting firms that understand the complexities of their business.
Below are the 10 best accounting firms that offer tailored services for Amazon sellers:
The 10 Best Accounting Firms for Amazon FBA Sellers
1. Mercurius Advisory Services (MASpartner)
MAS Partner is a full-service accounting and advisory firm that has been serving Amazon FBA sellers and ecommerce businesses since 2008, with a team of over 300 professionals including certified CPAs, ACCAs, CAs, and bookkeepers, operating across the US, UK, Australia, Canada, UAE, Singapore, and beyond. What sets MAS Partner apart in the Amazon FBA space is their combination of platform-specific expertise and a solution-driven approach tailored to each seller’s unique business model. They are proficient across the full range of accounting software used in ecommerce, including QuickBooks, Xero, Zoho Books, NetSuite, Sage, and FreshBooks, and they integrate directly with Amazon Seller Central to ensure every settlement report, FBA fee, reimbursement, and inventory adjustment is captured accurately every month.
Beyond bookkeeping, MAS Partner functions as a true financial partner. They handle multi-state sales tax compliance, including registration, filing, and remittance across all relevant US jurisdictions, manage federal and state income tax preparation with proactive year-round planning to minimize liability, and offer fractional CFO services for sellers who need strategic financial guidance alongside their day-to-day accounting. Their IRS CAA status also means they can directly assist international Amazon sellers with ITIN and EIN applications, making them one of the few firms equipped to support both domestic and global FBA operations under one roof. Trusted by 2,000 plus clients globally and affiliated with the International Accounting Group (TIAG) across 110 countries, MAS Partner brings a level of credibility, depth, and reach that very few Amazon-focused accounting firms can match.
Services include: FBA bookkeeping and settlement reconciliation, multi-state sales tax compliance, income tax preparation and filing, proactive tax planning, fractional CFO advisory, financial statements, payroll, and US company formation for international sellers.
Best for: Amazon FBA sellers at any stage who want a dedicated expert team handling every layer of their finances.
Pricing: Starting at $99/month
2. Seller CPA
Seller CPA focuses exclusively on ecommerce sellers, with every service either performed or directly supervised by CPAs, meaning no offshore outsourcing and no generalist bookkeepers involved at any point. Their engagements are built around accurate settlement reconciliation, thorough tax preparation, and year-round proactive planning so sellers always have a clear picture of where their finances stand. It is the firm to turn to when your Amazon business has grown past the point where spreadsheets and general accountants can keep up.
Best for: Established 7-figure Amazon sellers who want CPA-supervised books and a direct relationship with an ecommerce-native accounting team.
Pricing: Available upon consultation.
3. Finaloop
Finaloop is built specifically for ecommerce brands that want their books handled automatically and accurately without any manual input, combining AI-driven bookkeeping with human expert oversight to deliver GAAP-ready financials in real time across Amazon, Shopify, TikTok Shop, and other channels.
Best for: Scaling sellers past $250K in revenue who want to eliminate manual bookkeeping and access real-time financial visibility across channels.
Pricing: Starting at $399/month.
4. EcomBalance
EcomBalance is a done-for-you monthly bookkeeping service built by ecommerce entrepreneurs who have personally sold on Amazon, using QuickBooks Online and A2X to keep books accurate, reconciled, and delivered to clients by the 15th of every month. Every client works with a dedicated bookkeeping team that provides consistent communication and accrual-basis reporting for a clearer view of actual business performance, along with a free first month to evaluate the service risk-free.
Best for: Growing brands in the $200K to $30M revenue range looking for reliable, ecommerce-native bookkeeping without the overhead of an in-house team.
Pricing: Starting at $399/month.
Fully Accountable pairs standard Amazon accounting with outsourced CFO services, giving sellers access to a US-based team of CPAs and ecommerce experts who handle everything from financial reporting and tax preparation to high-level business strategy. Their proprietary benchmarking tool provides a complimentary competitive analysis showing how your financials compare to industry peers, making them the right fit for sellers who need financial leadership alongside accurate books.
Best for: Amazon sellers who need strategic financial guidance and CFO-level thinking, particularly those who are scaling quickly or planning a future business exit.
Pricing: Available upon request.
6. LedgerGurus
LedgerGurus focuses on ecommerce accounting with a strong emphasis on accurate bookkeeping and sales tax compliance. Their team works closely with Amazon and Shopify sellers, helping them maintain clean financial records and stay compliant with multi-state tax requirements, a common challenge for FBA businesses. They are known for their structured processes and consistent reporting, giving sellers clear visibility into their financial performance without managing accounting internally. Their focus on bookkeeping and compliance makes them a reliable choice for maintaining accurate financials.
Best for: Amazon FBA sellers who need reliable bookkeeping and strong sales tax compliance support.
Pricing: Available upon consultation.
7. Profitwise Accounting
Profitwise operates on a 360-degree process, gathering financial data, setting measurable goals, addressing high-priority items, and building a custom growth strategy. They have reportedly achieved a 43% higher profitability rate than the national average across their client base.
Best for: Amazon sellers focused on maximizing profitability and building a long-term financial growth strategy.
Pricing: Available upon consultation.
8. E2E Accounting
E2E Accounting handles Amazon seller accounting across multiple platforms, Amazon, Shopify, Walmart, with seamless QuickBooks and Xero integrations. Each client gets a dedicated accounting team that provides both financial management and strategic insights.
Best for: Sellers operating across multiple ecommerce channels who need a single, unified accounting partner.
Pricing: Available upon consultation.
9. Acuity
Acuity brings deep expertise in multi-state sales tax nexus, a critical requirement for FBA sellers whose inventory is spread across Amazon’s nationwide fulfillment center network. They offer bookkeeping, tax planning, and advisory services with a strong compliance focus.
Best for: High-volume FBA sellers who have triggered sales tax nexus across multiple states and need expert management of their compliance obligations.
Pricing: Custom pricing.
10. Bean Ninjas
Bean Ninjas is a Xero-specialist accounting firm serving ecommerce sellers who operate internationally. They handle multi-currency transactions, cross-border tax compliance, and global financial reporting, making them the go-to for US-based FBA sellers expanding into international Amazon marketplaces.
Best for: FBA sellers expanding to EU, UK, Canada, or Australian Amazon marketplaces who need international tax and multi-currency expertise.
Pricing: Custom pricing.
Quick Comparison: Top Accounting Firms for Amazon FBA Sellers
| Firm | Best For | Starting Price |
| Mercurius Advisory Services (MAS Partner) | Best overall, full-services, any stage | $99/month |
| Seller CPA | CPA-led, Amazon-only service | Upon consultation |
| Finaloop | Automation and real-time books | $399/month |
| EcomBalance | Growing 6 to 8 figure brands | $399/month |
| Fully Accountable | Fractional CFO services | Upon request |
| Ebiz Accounting | Personalized, affordable service | Upon consultation |
| Profitwise Accounting | Profitability-focused sellers | Upon consultation |
| Acuity | Multi-state sales tax compliance | Custom |
| Bean Ninjas | International Amazon sellers | Custom |
How to Find the Right Accounting Firm for Your Amazon FBA Business
Finding the right accounting firm is a crucial step for Amazon FBA sellers to manage their finances efficiently and stay compliant. Here are the key factors to consider when choosing the right firm for your business:
• E-commerce & Amazon FBA Expertise: Prioritize firms with proven expertise in Amazon FBA accounting and hands-on experience supporting e-commerce businesses.
• Sales Tax Compliance: Choose a firm with knowledge of multi-state sales tax and Amazon’s tax collection process.
• Bookkeeping & Reporting: Ensure they offer real-time financial reporting that integrates with Amazon Seller Central.
• Transparent Pricing: Choose an accountant with clear, upfront pricing and no hidden fees.
• Customization & Flexibility: Choose a firm that tailors its services to align with your business requirements and evolving goals.
• Reputation & Reviews: Check for strong client feedback from Amazon FBA sellers and a well-established reputation within the industry.
• Additional Services: Consider firms that offer financial planning and business consulting alongside accounting.
• Technology Integration: Verify the firm uses tools like A2X, QuickBooks, or Xero that integrate directly with Amazon Seller Central for seamless data flow.
By focusing on these factors, you’ll be better equipped to select an accounting firm that aligns with your business goals and helps you scale effectively. Key Advantages of Hiring Accountants for Amazon Sellers Hiring a specialized accounting firm goes beyond keeping your books clean; it drives business growth. Here’s how:
• Accurate Profit Insights: Understand your true margins after all FBA fees, COGS, and operating expenses.
• Tax Savings: Proactive planning reduces your tax liability through legitimate deductions and strategies.
• Sales Tax Compliance: Avoid penalties by staying current with evolving multi-state sales tax obligations.
• Time to Scale: Free up your time to focus on sourcing, marketing, and growing your business.
• Data-Driven Decisions: Real-time financial reporting enables smarter purchasing, pricing, and inventory decisions.
• Audit Protection: Clean, well-documented books reduce risk and ensure you’re prepared for any IRS scrutiny.
• Reimbursement Recovery: Specialized accountants identify and recover Amazon reimbursements for lost or damaged inventory that sellers often miss.
By outsourcing your accounting, you free up time to focus on growing your business, while ensuring financial clarity and compliance every step of the way.
FAQs
1. What is Amazon FBA?
Amazon FBA is a service where Amazon handles storage, packing, shipping, and customer service for sellers. This allows sellers to scale without managing logistics, but it involves complex fees and financial tracking.
2. What is Amazon FBA Accounting?
Amazon FBA accounting manages financial records for businesses using Amazon’s fulfillment service. It includes settlement reconciliation, fee tracking, inventory valuation, COGS, and multi-state sales tax compliance.
3. How is Amazon FBA Accounting Different from Regular Accounting?
Amazon FBA accounting differs from regular accounting as it handles bi-weekly deposits, sales tax compliance across states, and inventory tracking in Amazon’s fulfillment centers, areas regular accounting tools can’t manage.
4. When Should an Amazon Seller Hire an Accounting Firm?
Hire an accountant when your business nears $100K in annual revenue, if your profit margins are unclear, or if you are spending too much time on bookkeeping instead of growing the business. Early engagement helps avoid costly errors, missed deductions, and tax compliance issues that become harder to resolve over time.
5. How Much Do Amazon FBA Accounting Services Cost?
Amazon FBA accounting services start at approximately $399/month for basic bookkeeping. Full-service packages that include tax planning, sales tax compliance, and CFO advisory cost more depending on your revenue volume and complexity. Many firms offer a free consultation to provide a custom quote tailored to your business.
6. Do I Need a CPA for My Amazon FBA Business?
A CPA isn’t required for basic bookkeeping but is crucial for tax strategy, sales tax compliance, and complex financial planning. Firms like MAS Partner and Seller CPA provide CPA-supervised services that deliver greater accuracy, proactive guidance, and audit protection.
7. Can an Accounting Firm Help Me Recover Amazon Reimbursements?
Yes. Specialized Amazon accounting firms can audit your account for discrepancies in FBA fees, lost or damaged inventory, and incorrect charges, then file reimbursement claims with Amazon on your behalf. This often recovers meaningful amounts that sellers would otherwise never know they were owed.
8. What Accounting Software Do Amazon FBA Accountants Use?
The most commonly used tools include QuickBooks Online, Xero, and A2X, a purpose-built integration that maps Amazon settlement data directly into your accounting software. Some firms also use Zoho Books, Sage, NetSuite, or FreshBooks depending on the complexity of your operations.
9. What Is Amazon Sales Tax Nexus and Why Does It Matter?
Sales tax nexus is the legal connection between your business and a state that requires you to collect and remit sales tax in that state. Because Amazon FBA stores your inventory in fulfillment centers across the country, you may have nexus in dozens of states simultaneously. Failing to register and file in nexus states can result in significant penalties and back taxes.
Conclusion
Hiring the best accounting firms for Amazon FBA sellers can transform how you manage your business finances, ensure compliance, and maximize profitability. Whether you are a new seller trying to understand your first P&L or an established brand managing complex multi-state tax obligations, the right accounting partner will save you time, money, and stress. By outsourcing your accounting, you free up valuable time to focus on growing your business, while also securing financial clarity and protection.
About Maspartner
Maspartner offers tailored accounting solutions for Amazon FBA sellers, seamlessly integrating with QuickBooks, Xero, and Sage. Our expert team provides customized reporting, giving you clear insights to make informed decisions and grow your business.
Book your free consultation today and optimize your Amazon FBA business with expert financial guidance!
