GL (General Ledger)
The GL (General Ledger) is the master accounting record of every financial transaction the business makes — revenue in, costs out, categorised into accounts. For an Amazon seller, it’s where marketplace fees, advertising spend, refunds, inventory purchases, and payouts stop being a stream of platform exports and become an organised picture of the business.
What is GL?
The GL (General Ledger) is the master accounting record of every financial transaction the business makes — revenue in, costs out, categorised into accounts. For an Amazon seller, it’s where marketplace fees, advertising spend, refunds, inventory purchases, and payouts stop being a stream of platform exports and become an organised picture of the business.
Nobody starts selling on Amazon for the accounting. But the GL is where margin leaks become visible: the fee category climbing quietly month over month, the ad line growing faster than revenue, the refund pattern nobody noticed. A clean general ledger isn’t compliance theatre; it’s the scoreboard.
What an Amazon-shaped GL must get right
Three Amazon-specific disciplines. Payout mapping: Amazon pays in settlements (with reserves, adjustments, and fee nets inside), so the GL has to unpick each disbursement into its ingredient lines — sales, referral fees, FBA fees, advertising, refunds, reimbursements — rather than booking a lump “Amazon deposit.” Cost matching: inventory purchases hit cash months before COGS hits the P&L (the working-capital illusion); a good ledger tracks inventory as an asset and releases cost with sales, or your profit figures dress up cash starvation as growth. And category continuity: fee categories that live in the same accounts month after month make trends visible — the whole purpose. Consistency beats sophistication: a simple chart of accounts applied relentlessly reveals more than a sophisticated one applied unevenly.
The review habit that pays for the work
A GL is only as valuable as the questions it answers. The monthly rhythm: profit-and-loss by category (sales, Amazon fees, advertising, refunds) compared against last month and last year at the same season; the fee lines scanned for creep (any category up more than revenue is an investigation); cash movement reconciled against settlement reports. The discoveries are routinely significant: a referral-fee miscategorisation overcharging for months, a subscription add-on nobody cancelled, advertising quietly doubled. None of these are dramatic individually — collectively they’re the difference between operating a business and guessing at one.
In practice
A seller’s first proper GL exercise breaks one quarter into categories: net sales up 22%, but advertising up 61% and FBA fee category up 34% (a size-tier drift on three SKUs). The growth story reversed into a margin story — two of the increases were fixable within a month (tier correction, bid audit), and the third (ad efficiency) became the quarter’s project. The P&L told the truth the dashboard never showed.
How Harpy Media helps
Amazon-shaped bookkeeping — settlement-level categorisation and monthly margin reviews — is how we turn platform exports into a scoreboard clients can steer by.
GL FAQ
What is a general ledger?
The master record of all financial transactions, categorised into accounts — for Amazon sellers: sales, fees, advertising, refunds, inventory, and payouts.
Why is a GL special for Amazon sellers?
Because Amazon’s settlement model nets fees inside payouts, and inventory timing decouples cash from profit — a generic ledger hides both; a structured one reveals margin trends.
Do I need accounting software?
The tool matters less than the structure: separated fee categories, inventory tracking, and monthly category reviews. Spreadsheets with discipline beat software without it.
Related terms
ROI (Return on Investment)ARA (Amazon Retail Analytics)Co-op or CoopDMF (Discretionary Marketing Funds)Want these numbers watched for you, every week?
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