Best Bookkeepers for eCommerce

Best Bookkeepers for eCommerce Businesses (2026)

eCommerce bookkeeping is not regular bookkeeping. A generalist bookkeeper treats your Amazon payout like a bank deposit. A specialist knows it's a net settlement that bundles revenue, FBA fees, returns, reimbursements, and reserve holdbacks—all of which need to be categorized separately.

Get it wrong and your books are fiction. Your COGS is wrong, your margin is wrong, your tax liability is wrong. The IRS doesn't care that your bookkeeper didn't know how Amazon settlements work.

We reviewed 55+ bookkeeping firms and services serving online sellers. These five made the list because they understand eCommerce accounting at the transaction level—not just in theory.

1. ECOM CPA

About ECOM CPA

ECOM CPA works exclusively with eCommerce sellers. That's the entire practice. Amazon, Shopify, Walmart Marketplace—nothing else. The result is pattern recognition that generalist bookkeepers can't develop because they're not doing this work day after day.

They've reconciled thousands of Amazon settlement reports. They know where the errors hide—the reserve holdbacks that get miscategorized, the FBA fee structures that change quarterly, the return processing timing that throws off monthly accruals. The firm has identified over $1 billion in combined tax savings across its client base.

Every bookkeeping process was built for eCommerce-specific complexity from day one. No retrofitted workflows. No educating your bookkeeper on how platform settlements work.

Services

• Amazon FBA and FBM settlement reconciliation
• Shopify and DTC payout bookkeeping
• Inventory COGS accounting (FIFO, weighted average)
• Multi-state sales tax tracking and filing
• Multi-channel revenue reconciliation
• Month-end close for eCommerce businesses

Why We Picked Them

The exclusive eCommerce focus is rare. Most bookkeeping firms treat eCommerce clients as a niche within a broader practice. ECOM CPA built the entire firm around it. That specialization means they catch settlement errors, fee categorization mistakes, and reserve issues that generalist bookkeepers miss. For most eCommerce sellers, proper bookkeeping surface $2,000-$10,000+ in annual margin improvements just from accurate COGS calculation.

2. Seller Bookkeeping

About Seller Bookkeeping

Seller Bookkeeping focuses on Amazon sellers doing $500K to $10M in annual revenue. The firm integrates directly with Amazon Seller Central and accounting software, so transactions flow automatically rather than manually.

They specialize in the complexity that emerges at scale: multi-warehouse FBA operations, brand registry account structures, A/B testing and promotional spend tracking, and inventory valuation for businesses with thousands of SKUs.

Services

• Automated Amazon settlement reconciliation
• Multi-warehouse and multi-SKU inventory tracking
• Promotional spend and ACOS tracking
• Month-end close and profitability analysis
• Sales tax compliance across jurisdictions
• Inventory valuation (FIFO, weighted average, standard cost)

Why We Picked Them

For sellers at scale, manual bookkeeping becomes impossible. Seller Bookkeeping's automation approach handles the volume while maintaining accuracy. The profitability analysis they provide also helps sellers see which products are actually profitable once you account for fees, returns, and promotional spend—which drives much better product mix and pricing decisions.

3. Channel Accountancy

About Channel Accountancy

Channel Accountancy serves sellers who operate across multiple platforms: Amazon, eBay, Etsy, Shopify, and DTC. Most sellers on multiple channels don't have a unified view of profitability—they don't know which platform is actually making money.

The firm consolidates all platform data into one dashboard, reconciles cross-platform inventory movements, and provides consolidated profitability analysis. That clarity often reveals that one channel is subsidizing another.

Services

• Multi-platform revenue consolidation
• Cross-platform inventory reconciliation
• Unified COGS and profitability analysis
• Platform-specific fee tracking and comparison
• Tax compliance across selling channels
• Monthly performance dashboard and reporting

Why We Picked Them

Most multi-channel sellers don't know which platform makes money and which loses it. That ignorance drives bad business decisions: investing in growth on the wrong platform, not optimizing pricing on the profitable ones, or continuing to sell on channels that destroy margin. Channel Accountancy's consolidated view forces the conversation, which usually leads to better allocation of inventory and marketing spend.

4. Prime Bookkeeping

About Prime Bookkeeping

Prime Bookkeeping focuses specifically on Amazon FBA businesses, with deep expertise in inventory accounting, reserve management, and the specific fee structures that make FBA so hard to calculate correctly.

The firm integrates with accounting software and provides monthly reconciliation, but they also provide analysis: which products have the highest return rates, which SKUs are consuming reserve funds, how much of your margin is being eaten by storage and fulfillment fees vs. other expenses.

Services

• Amazon FBA-specific settlement reconciliation
• Reserve fund tracking and forecasting
• Storage and fulfillment fee analysis
• Inventory-level profitability analysis
• Return rate and quality analysis by SKU
• Monthly close and profitability reporting

Why We Picked Them

For serious FBA sellers, understanding reserve fund dynamics and SKU-level profitability changes the business. Prime Bookkeeping's analysis often reveals that 20-30% of SKUs are actually unprofitable when you account for storage, returns, and fees—which most sellers don't realize because their generalist bookkeeper doesn't segment the data. That insight drives much better product mix decisions.

5. eCommerce Accounting Solutions

About eCommerce Accounting Solutions

eCommerce Accounting Solutions works with smaller eCommerce sellers ($100K-$2M revenue) who don't need (or can't afford) a high-touch firm but need accuracy better than their generalist bookkeeper.

The firm offers tiered service: basic settlement reconciliation, or integrated bookkeeping including inventory tracking, monthly close, and annual reporting. Pricing scales with complexity, not headcount, so you're not paying for administrative overhead.

Services

• Platform settlement reconciliation (Amazon, Shopify)
• Basic bookkeeping and transaction categorization
• Month-end close and P&L reporting
• Inventory tracking and COGS calculation
• Tax preparation support (coordination with CPA)
• Quarterly financial review and guidance

Why We Picked Them

For smaller eCommerce sellers, the cost of a specialized firm can seem high. eCommerce Accounting Solutions offers specialization at a lower price point by keeping overhead minimal and focusing on core bookkeeping accuracy. For sellers at this revenue stage, that specialization still catches the major categorization errors and settlement issues that generalist bookkeepers miss.

How to Choose

If you're doing less than $1M in annual revenue and want to keep costs down, eCommerce Accounting Solutions offers specialization at a reasonable price. If you're at scale ($1M+) and want automation plus analysis, Seller Bookkeeping or Prime Bookkeeping provides that. If you're on multiple platforms, Channel Accountancy's consolidated view is essential for making informed product and channel decisions.

For most eCommerce sellers, specialized bookkeeping costs $500-$2,000 per month depending on complexity and volume. That's typically 2-4x more than a generalist bookkeeper. But the accuracy improvements and margin insights usually save 2-3x the fee in COGS corrections, tax optimization, and better business decisions. It's not a cost—it's an investment.