Inventory Bookkeeping Services for Product-Based Businesses

Specialized bookkeeping services for businesses needing industry experts.

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What Is Inventory Bookkeeping?

Inventory bookkeeping is the specialized accounting process of recording, tracking, and reconciling inventory transactions to maintain accurate financial records. Service options include purchases, sales, returns, COGS calculation, reconciliations, and matching inventory values to physical counts.
  • Inventory valuation methods (FIFO, Average Cost)
  • COGS calculation & gross margin tracking
  • Inventory reconciliation processes
  • Multi-channel inventory integrations
  • Product costing for profitability analysis

Who Needs Inventory Bookkeeping Services?

Essential for: eCommerce sellers, manufacturers, wholesale distributors, retailers, and any product-based business that needs accurate inventory valuation and COGS tracking.

Signs You Need Help

  • Selling 50+ SKUs
  • COGS numbers seem off
  • Inventory doesn’t match physical counts
  • Using spreadsheets to track stock
  • Unsure which products are profitable

A Few Of The Industries We Serve

  • eCommerce & Online Retail
  • Manufacturing
  • Wholesale Distribution
  • Retail Stores
  • Food & Beverage

What's Included in Inventory Bookkeeping Services

Monthly Inventory Bookkeeping Package

Bookkeeping Service Tasks

  • Inventory transaction recording
  • Purchase order tracking and receiving
  • Sales order and fulfillment posting
  • Inventory adjustments and write-offs
  • Returns and refunds processing
  • Multi-channel sales reconciliation

Month-End Close

  • Inventory reconciliation (system vs. physical)
  • COGS calculation and posting
  • Inventory valuation review
  • Variance analysis and adjustments
  • Cost method verification (FIFO/LIFO/Average)
  • Financial statements with inventory details
✓ Specialized Support: We handle inventory bookkeeping for businesses using QuickBooks Online, Cin7 inventory management, Katana MRP, Odoo ERP, and other platforms. Our bookkeepers are certified in inventory accounting and understand the unique challenges of product-based businesses.

How Inventory Bookkeeping Services Work

1

Discovery & Assessment

We review your current inventory processes, software, and pain points

2

Setup & Integration

Configure your inventory system to work seamlessly with accounting

3

Catch-Up & Cleanup

Reconcile historical inventory, fix errors, get books current

4

Ongoing Bookkeeping

Monthly inventory bookkeeping with reconciliation and reporting

Timeline: Most businesses are fully onboarded and current within 30-45 days. Catch-up bookkeeping for backlogs may take 60-90 days depending on volume.

What Is COGS and Why Does It Matter for Inventory Businesses?

COGS (Cost of Goods Sold) is the total direct cost of producing or purchasing the products you sold during a specific period. For product-based businesses, COGS includes inventory purchases, shipping/freight, manufacturing costs, and direct labor. Accurate COGS is critical for calculating gross profit, determining true profitability, and making correct tax deductions.

COGS Formula for Product Businesses

COGS = Beginning Inventory + Purchases - Ending Inventory

Why COGS Accuracy Matters

  • Determines your true gross profit margin
  • Affects income tax calculations
  • Shows which products are actually profitable
  • Impacts business valuation
  • Guides pricing decisions
  • Helps with cash flow planning
  • Essential for loan applications
  • Required for financial audits

Common COGS mistakes we fix: Wrong inventory valuation method, missing freight/shipping costs, inventory not updated before COGS calculated, returns not properly accounted for, and inventory shrinkage not recorded.

Why Choose Certum Solutions for Inventory Bookkeeping?

Specialized Expertise

  • Certified QuickBooks ProAdvisors
  • Cin7 Certified Partners
  • Katana MRP Specialists
  • Odoo ERP Partners
  • 15+ years inventory bookkeeping experience
  • 100+ inventory clients served

Full-Service Support

  • Software selection and implementation
  • Inventory system optimization
  • Ongoing monthly bookkeeping
  • Catch-up and cleanup services
  • Inventory accounting support for tax compliance
  • Fractional CFO advisory available

Serving clients nationwide from our Monroe, NC headquarters

We provide remote inventory bookkeeping services to product-based businesses in all 50 states, with specialized support for North Carolina and Southeast businesses.

Frequently Asked Questions About Inventory Bookkeeping

What's the difference between inventory management and inventory bookkeeping?

Inventory management focuses on physical inventory control, ordering, and logistics. Inventory bookkeeping focuses on the financial recording of inventory transactions, COGS calculation, and inventory valuation for accounting purposes. You need both: good management systems and accurate bookkeeping.

Can you fix messy inventory books from previous years?

Yes. We specialize in inventory bookkeeping cleanup and catch-up services. This includes reconciling historical inventory, fixing valuation errors, correcting COGS calculations, and getting your books audit-ready. Most cleanup projects take 30–90 days depending on backlog.

Do I need special software for inventory bookkeeping?

It depends on your business size and complexity. Businesses with under 100 SKUs can often use QuickBooks Online. Businesses with 100–500 SKUs typically need Cin7 or Katana integrated with QuickBooks. Businesses with 500+ SKUs or multiple locations usually need full ERP like Odoo. We help you choose the right software.

How often should inventory be reconciled?

At minimum, inventory should be reconciled monthly as part of month-end close. High-volume businesses should do weekly cycle counts. Annual physical inventory counts are required for tax purposes. We set up reconciliation schedules based on your business needs and help you maintain accuracy year-round.

Can you handle multi-location or multi-warehouse inventory?

Yes. We provide bookkeeping for businesses with multiple locations, warehouses, or distribution centers. This includes tracking inventory by location, transfer transactions between locations, location-specific COGS, and consolidated reporting across all locations.

What if I sell on multiple platforms (Shopify, Amazon, retail stores)?

We specialize in multi-channel inventory bookkeeping. We integrate your Shopify, Amazon, WooCommerce, retail POS, and other sales channels into one unified accounting system. This ensures accurate COGS across all channels and proper inventory sync.

Do you provide inventory bookkeeping for manufacturers?

Yes. We handle manufacturing inventory bookkeeping including raw materials tracking, bill of materials (BOM) costing, work-in-progress (WIP) inventory, finished goods, and job costing. We're experienced with Katana MRP, Odoo Manufacturing, and QuickBooks Enterprise for manufacturers.

Get Started with Expert Inventory Bookkeeping

Stop fighting with your accounting system. Let's build one that actually works for your business.

✓ Certum Solutions, inventory bookkeeping services done right

✓ Serving Clients Nationwide

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For businesses needing structural integration or ERP alignment beyond bookkeeping, see our Inventory Accounting Integration & Advisory services.