Amazon FBA Bookkeeping - Track Your Seller Profit

Amazon FBA selling means complex bookkeeping: tracking COGS, multiple Amazon fees, PPC spend, inventory costs, and returns. SheetLink automatically syncs your bank account to Google Sheets, giving you real-time visibility into deposits, expenses, and true profit per ASIN—all in one spreadsheet.

Why FBA Sellers Struggle with Bookkeeping

Amazon FBA bookkeeping is uniquely challenging compared to other ecommerce:

• Complex fee structure - Referral fees, FBA fees, storage fees, long-term storage, removal fees
• Inventory tracking - COGS varies by supplier, shipment, and product
• PPC advertising costs - Campaign spend must be allocated to specific ASINs
• Returns and refunds - Revenue adjustments affect true profit calculations
• Multiple payment schedules - Amazon deposits every 2 weeks, but fees are deducted daily
• Tax complexity - Nexus requirements, sales tax, quarterly estimates, COGS accounting

SheetLink solves this by automatically syncing all bank transactions—Amazon deposits, inventory purchases, PPC charges, and business expenses—to Google Sheets where you can build custom tracking for your FBA business.

How SheetLink Helps Amazon FBA Sellers

Get automated bookkeeping at a fraction of the cost of FBA-specific accounting software:

• Auto-sync Amazon deposits - Track bi-weekly payments to your bank account
• Track inventory costs - Sync supplier payments, shipping to FBA, prep services
• Monitor Amazon fees - Capture referral fees, FBA fees, storage charges
• Track PPC spend - Sync advertising charges and allocate to ASINs
• Calculate profit by ASIN - See which products are actually profitable
• Affordable pricing - $2/month vs A2X ($19/month) or Taxomate ($29/month)

What to Track for Your FBA Business

SheetLink syncs all transactions so you can organize your FBA finances:

Calculate True Profit Per ASIN

Many FBA sellers overestimate profit by ignoring all the fees. Here's how to calculate accurately:

With SheetLink, build formulas in Google Sheets to calculate this automatically for each ASIN. Track which products have the best margins and focus your inventory investment accordingly.

Track Amazon Fees Breakdown

Understanding Amazon's fee structure is critical for profitability:

Manage Inventory & COGS Tracking

Accurate COGS tracking is essential for tax deductions and profitability analysis:

1. Track Supplier Payments - SheetLink syncs all payments to manufacturers, wholesalers, or Alibaba suppliers
2. Include Shipping to FBA - Add freight forwarding, customs, duties to your COGS per unit
3. Add Prep & Packaging - Include poly bags, labeling, prep center fees in total COGS
4. Calculate Per-Unit Cost - Divide total shipment cost by units to get COGS per ASIN
5. Track Inventory Value - Multiply units in FBA by COGS to see total capital tied up in inventory

Add columns in your SheetLink spreadsheet for: ASIN, Supplier, Units, Total Cost, COGS per Unit, Units in Stock, Inventory Value.

Amazon PPC & Advertising Tracking

PPC spend directly impacts profitability. Track advertising costs to calculate true ACOS and TACOS:

• ACOS (Advertising Cost of Sale) - PPC Spend ÷ PPC Revenue × 100 (target: under 20% for established products)
• TACOS (Total Advertising Cost of Sale) - PPC Spend ÷ Total Revenue × 100 (includes organic sales)
• PPC by ASIN - Allocate campaign spend to specific products to see which are profitable
• Break-even ACOS - Calculate your maximum allowable ACOS based on margins

SheetLink syncs Amazon advertising charges from your bank. Tag charges by campaign or ASIN to track PPC ROI.

Key Metrics for FBA Sellers

Build these metrics in your SheetLink spreadsheet to monitor business health:

How to Set Up Your Amazon FBA Tracker

Get your FBA bookkeeping organized in under 15 minutes:

1. Install SheetLink Chrome Extension - Add from Chrome Web Store
2. Connect Your Business Bank Account - Link the account where Amazon deposits payments via Plaid
3. Connect Your Business Credit Card - Track inventory purchases, PPC charges, and expenses
4. Create Your FBA Finance Sheet - Start with a blank Google Sheet
5. Sync Transactions - SheetLink pulls in all deposits and expenses
6. Add Custom Columns - ASIN, Product Name, Fee Type, PPC Campaign, COGS
7. Tag Transactions - Categorize each transaction by type (revenue, COGS, fees, PPC)
8. Build Profit Formulas - Calculate profit per ASIN and overall business profit

SheetLink vs. FBA Accounting Software

SheetLink advantage: Automated bank sync with full spreadsheet flexibility at a fraction of the cost. Combine with Amazon Seller Central reports for complete FBA tracking. Upgrade to A2X or QuickBooks only when you need accrual accounting or CPA integration.

Tax Season for Amazon FBA Sellers

FBA sellers face complex tax requirements. SheetLink helps you stay organized:

• Schedule C filing - Track gross receipts, COGS, business expenses for profit/loss calculation
• Quarterly estimated taxes - Calculate net profit each quarter (revenue minus all costs and fees)
• COGS deductions - Properly account for inventory purchases and COGS sold during tax year
• State sales tax nexus - Track where Amazon collects sales tax on your behalf (economic nexus)
• 1099-K reporting - Amazon sends 1099-K if you make over $5,000; verify with your SheetLink records
• Inventory valuation - Year-end inventory value affects COGS calculation for taxes

Real FBA Seller Use Cases

Pricing for Amazon FBA Sellers

SheetLink is designed to scale with your FBA business:

• Free Tier - Last 7 days of transactions (great for testing or very small sellers)
• Basic Plan - $2/month for 90 days of history (recommended for most FBA sellers, covers quarterly analysis)
• Pro Plan - $10/month for 24 months of history (best for established sellers, full tax year + prior year records)

Recommended tier: Basic ($2/month) for sellers doing under $10k/month. Pro ($10/month) for sellers doing $10k+ monthly revenue who need year-over-year comparisons and full tax records.

Compare to A2X ($19/month minimum) or Taxomate ($29/month). SheetLink gives you automated bank sync at a fraction of the cost.

Get Started: Track Your FBA Profit Today

Stop guessing at profit margins and start tracking real numbers. Know exactly which ASINs are profitable, what your true ACOS is, and how much you owe in taxes each quarter.