The number that lands in an ecommerce bank account is the least informative number in the business. A $150,000 sales month arrives as roughly $131,000 of deposits after gateway fees, marketplace commissions, refunds and reserves, and a bookkeeping setup that records those deposits as revenue is wrong everywhere at once: sales understated, the fastest-growing cost category invisible, margins fictional, and GST short by four figures a month. Add the other structural trap, purchases expensed instead of held as inventory, and an ecommerce P&L can be confidently, consistently meaningless. This guide covers the three systems that make online retail books true: settlement reconciliation at gross, inventory at landed cost, and a GST configuration built for imports, exports and platforms.
Published: July 2026
Every sales channel pays out net: gross order value, minus its fees, minus refunds it processed, sometimes minus a rolling reserve, on its own settlement cycle. Shopify’s gateway, Stripe, PayPal, Afterpay and the marketplaces all behave this way, differing only in fee structure and payout rhythm. The bookkeeping rule is invariant: revenue is recorded at gross, and every deduction becomes its own visible line.
Work the $150,000 month. Gross sales $150,000; gateway and platform fees $6,000; refunds processed at source $9,000; reserve withheld $4,000; deposits received $131,000. Booked correctly, the ledger shows $150,000 of sales, $9,000 of refunds contra revenue, $6,000 of merchant fees as expenses with any GST credits on them claimed, and a $4,000 receivable for the reserve. Booked from the bank feed, the ledger shows $131,000 of sales and nothing else, which misses the fee creep that decides ecommerce profitability, and understates GST payable by roughly $1,700 in one month, because GST is owed on the $150,000 of taxable sales, not on the deposits. Twelve months of that error is a five-figure BAS problem discovered in one unpleasant afternoon.
Doing this manually across channels at volume is not realistic, which is why settlement connector tools such as A2X exist as a category: they translate each payout into a journal that splits gross sales, fees, refunds and reserves by channel. The tool matters less than the output standard: every deposit reconciles to a settlement report, every settlement report posts at gross, and each channel has its own income and fee accounts so channel profitability is a report, not a research project. Chargebacks follow the same logic with their own account, both the clawed-back sale and the dispute fee, because a rising chargeback line is an early-warning indicator worth seeing.
A $2.4 million GMV brand with blended fees and commissions of 4.5 per cent is spending $108,000 a year on platform costs. Net-deposit bookkeeping makes that line invisible. When fees drift to 5.2 per cent after marketplace mix shifts, the extra $16,800 a year never triggers a conversation because it never appears. Channel-level fee reporting is how that conversation starts in the week the mix changes, not the year the margin collapses.
The second structural error is expensing stock purchases when paid. It feels conservative and it destroys the accounts: a container paid for in March craters March’s profit, the sales it produces inflate May and June, gross margin swings twenty points between months, and nobody can answer the only question that matters, what does it actually cost us to sell this product?
The fix has two components.
With settlements at gross and inventory at landed cost, the P&L finally produces the metric ecommerce runs on: true gross margin per channel and per SKU, after platform fees, after freight, after refunds. Everything strategic, pricing, range, channel mix, ad spend limits, sits downstream of that number being real. For growth-stage finance oversight, the fractional CFO for ecommerce businesses guide and fractional CFO costs in Australia sit next to this one.
Ecommerce GST has four moving parts that generic setups miss.
Domestic sales carry GST in the ordinary way, on the gross sale, per the settlement discipline above. Exports are generally GST-free where the goods leave Australia within the required timeframes, so export orders need their own tax treatment and evidence trail rather than defaulting to taxable; for a business with meaningful international sales, coding exports correctly is a permanent margin improvement of a full GST-worth on those orders.
Imports attract GST at the border on taxable importations over the low value threshold, ordinarily paid to clear the goods and claimed back on the next BAS, a pure cashflow drag measured in weeks. The deferred GST scheme removes it: approved importers on monthly BAS lodgement defer import GST to the activity statement, where the deferred amount and its input tax credit appear on the same statement and net to nothing. For an importer bringing in $80,000 of stock a month, that is roughly $8,000 a month of border payments that simply stop happening, permanently, for the price of moving to monthly lodgement and an application. It is the single most underused cashflow tool in Australian ecommerce. Annualised, that is about $96,000 of float returned to the business.
Platforms and low value imports run special rules in the other direction: for goods valued at $1,000 or less sold into Australia by overseas sellers, the electronic distribution platform is typically treated as the supplier and handles the GST. Australian-established sellers on the same marketplaces remain responsible for GST on their own domestic sales as normal, so the practical task is knowing, channel by channel, who is remitting what, and reconciling the marketplace’s tax reports against your own BAS position rather than assuming.
Multi-currency sits alongside all of this for any business selling or buying in USD: sales and purchases translated at transaction rates, FX gains and losses recognised rather than smeared into revenue, and foreign-currency balances revalued so the balance sheet is not quietly wrong by the year’s currency move.
Ecommerce runs one of the harshest working capital cycles in small business: suppliers paid at or before shipment, stock on the water for weeks, then on the shelf for weeks more, sold, and settled net days later, often with a reserve held back. Cash goes out months before it comes back, and growth makes it worse, because every step up in sales demands a bigger stock bet funded from a base of receipts that reflect last quarter’s smaller business.
A brand with 60 days of stock, 7 days settlement lag and suppliers on 30-day terms funds about 37 days of sales permanently. At $200,000 a month revenue that is roughly $247,000 of permanent working capital. Grow 30 per cent without changing the cycle and you need another $74,000 of float. That is why a 13-week forecast is not optional. Build it with the cash flow forecast calculator and the cash conversion cycle framework. See also working capital for SMEs.
Businesses with that visibility time their container orders against their cash curve and negotiate terms from data; businesses without it discover the gap mid-peak-season and reach for expensive money. The books are the early warning system, and in ecommerce the warning is worth months.
Expensive path: bank-feed sales, purchases expensed, no deferred GST, export sales coded taxable. Annual cost can include $50,000-plus of misstated tax, wrong margins driving bad ad spend, and peak-season cash crises.
Practical path: gross settlement postings by channel, landed-cost inventory with three-bucket reconciliation, deferred GST scheme, export coding, weekly channel margin pack, 13-week cash forecast. Finance support via outsourced finance services for a growing ecommerce brand commonly lands $2,000 to $6,000 a month. Scope your setup with the bookkeeping fee estimator, then run the in-house option through the hire vs outsource calculator. See cost of bookkeeping in Australia.
Building this is a defined setup project followed by a weekly rhythm, which is exactly the shape of work an embedded finance team does for online retailers, and it costs less than one season of the errors it prevents.
Should I record Shopify or Amazon payouts as my sales?
No. Payouts are gross sales minus fees, refunds and reserves, so booking deposits as revenue understates sales, hides fee creep and short-pays GST, which is owed on the gross taxable sales. Post each settlement at gross with fees, refunds and reserves as their own lines, per channel.
How do refunds and chargebacks get recorded?
Refunds as contra revenue in their own account, chargebacks with both the reversed sale and the dispute fee visible. Both lines are operating indicators worth trending, and burying them inside net deposits removes an early-warning system.
Why can’t I just expense stock when I buy it?
Because profit becomes a function of purchase timing rather than trading: buying months crater, selling months flatter, margins swing wildly and per-product profitability is unknowable. Stock belongs on the balance sheet, at landed cost, released to COGS as it sells, trued by stocktakes.
What is landed cost and what goes into it?
The full cost of getting stock to sellable position: supplier invoice plus international freight, duty, and clearance charges, capitalised into inventory and released through cost of goods sold per unit. Expensing freight separately overstates unit margins by the hidden amount and corrupts every range decision built on them.
What is the deferred GST scheme and who should use it?
An ATO arrangement letting approved importers defer import GST from the border to their monthly BAS, where the liability and its credit net off, eliminating weeks of cashflow drag on every shipment. Any regular importer of stock should assess it; the entry costs are monthly lodgement and an application.
Do I charge GST on export orders?
Exports are generally GST-free where the goods leave Australia within the required timeframe and the evidence supports it, so export sales need their own tax coding and documentation rather than defaulting to taxable. Correct treatment is a permanent margin gain on international revenue.
Who pays GST on marketplace sales?
For low value goods sold into Australia by overseas sellers, the platform is typically the deemed supplier and remits the GST. Australian sellers remain responsible for GST on their own domestic sales through the same marketplaces, so reconcile each channel’s tax reports against your BAS rather than assuming the platform handled it.
How should inventory at a 3PL or fulfilment centre be handled?
As its own inventory location on the balance sheet, reconciled monthly to the provider’s stock report, alongside stock on hand and stock in transit. Unreconciled 3PL holdings are where shrinkage, misplaced receipts and unbilled storage hide.
How often should channel profitability be reviewed?
Weekly at operating level for fees, refunds and contribution; monthly for full landed-cost gross margin by channel and by SKU family. Ecommerce mix shifts faster than monthly-only reporting can catch.
Scale Suite is a Sydney-based provider of outsourced finance teams and fractional CFO services for Australian SMEs. We deliver weekly bookkeeping, payroll, BAS/IAS lodgement, cashflow reporting, management accounts, and strategic fractional CFO oversight, all as a fully embedded team that works inside your business.
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We review and check this guide periodically. At the time of writing (July 2026), all information was current. Scale Suite is a registered BAS Agent, not a licensed tax advisor or financial advisor. This content is general information only and does not constitute professional tax, financial, or legal advice. Some details may change over time.
Scale Suite is a Sydney-based provider of outsourced finance and HR services for Australian SMEs. We deliver bookkeeping, financial reporting, payroll processing, fractional CFO support, recruitment, employee onboarding, people and culture support, and fractional HR oversight, all as a fully embedded team that works inside your business.
Employment Hero Gold Partner, CA-qualified, and Xero Certified, we replace fragmented finance and HR processes with one responsive, senior-level function at a fraction of the cost of full-time hires. We serve growing businesses across Sydney, Melbourne, Brisbane, and Perth, with packages starting from $1,500 per month and no lock-in contracts.
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