Accounting for sellers on five channels at once
Landed-cost COGS, perpetual inventory, multichannel sales tax nexus, and marketplace and processor fees reconciled automatically - in one AI accounting system instead of four channel exports stitched together.
Why multichannel selling breaks generic bookkeeping
A seller on Shopify, Amazon, and Walmart is really running three businesses with three fee structures and one shared inventory pool. Landed cost, not invoice cost, determines real margin - and nexus obligations accumulate silently as sales cross state thresholds.
- Multichannel COGS: landed cost - product, freight-in, duty, packaging - must roll up per SKU across every channel, not just the storefront price.
- Inventory: one shared stock pool sold through multiple channels needs a single perpetual ledger, or units get oversold.
- Sales tax nexus: crossing an economic threshold in a state creates a filing obligation, and marketplace-facilitator rules vary by state.
- Payment fees: marketplace referral fees, payment processor fees, and chargebacks eat into gross sales before they ever hit the bank.
How Fintra maps to multichannel operations
- AI accounting maintains a channel dimension on every transaction, so margin is visible per channel after fees, not just as blended revenue.
- The perpetual inventory stock ledger tracks one shared pool across channels, with landed cost - product, freight-in, duty, packaging - rolled into unit COGS.
- Sales tax runs an Avalara-class engine with a rolling 12-month economic-nexus monitor per state, so registration happens before penalties do.
- Month-end close reconciles marketplace payouts and processor deposits to bank, separating referral fees, processing fees, refunds, and chargebacks.
- Demand and inventory intelligence proposes reorder points from the same stock ledger - draft-first, never auto-ordering.
A worked landed-cost example
Landed cost per unit
Product + freight-in + duty + packaging = $6.00 + $1.10 + $0.80 + $0.50 = $8.40
Illustrative example: landed cost, not factory price, is what Fintra rolls into COGS - so channel-level margin reporting reflects real profitability.
Channel exports vs Fintra
| Workflow | Spreadsheets + channel exports | Fintra |
|---|---|---|
| COGS by channel | Blended landed cost estimated at year-end | Landed cost rolled into unit COGS per channel |
| Inventory | Separate counts per channel, prone to overselling | One perpetual stock ledger shared across channels |
| Sales tax nexus | Per-channel spreadsheets and calendar reminders | Rolling 12-month nexus monitor by state |
| Payout reconciliation | Manual matching of marketplace deposits to bank | Automated matching with fees, refunds, and chargebacks split out |
Getting started
From channel exports to one ledger
- 1
Connect channels
Bring in Shopify, Amazon, Walmart, and any other storefronts.
- 2
Load landed cost
Set product, freight-in, duty, and packaging cost components per SKU.
- 3
Close with fees reconciled
Your first close matches payouts to deposits and books fees automatically.
Frequently asked questions
What is the best accounting software for ecommerce sellers?
A good fit tracks landed cost per SKU, keeps one inventory ledger across every channel, and monitors sales tax nexus automatically. Fintra does all three from one system, so channel-level margin and nexus exposure are visible without stitching together exports from each marketplace.
Does Fintra track sales tax nexus across multiple channels?
Yes. Fintra runs an Avalara-class sales tax engine with a rolling 12-month economic-nexus monitor per state across all connected channels, flagging when combined sales approach or cross a threshold - including marketplace-facilitator nuances that differ by state.
Can Fintra reconcile Amazon and Shopify payouts automatically?
Fintra matches marketplace and processor payouts to bank deposits, splitting out referral fees, payment processing fees, refunds, and chargebacks as they post. That removes the manual per-channel reconciliation spreadsheet most multichannel sellers maintain today.
How does Fintra calculate COGS for ecommerce inventory?
Fintra rolls landed cost - product cost, freight-in, duty, and packaging - into unit COGS on the perpetual inventory stock ledger, so margin reflects true cost rather than factory price alone. Because the ledger is shared across channels, one accurate cost basis feeds every channel’s margin report.
Stay in the loop
One practical finance briefing a week - new guides, checklists, and benchmarks.
See true margin across every channel
Fintra is free to start, no card required. Connect your channels and get landed-cost COGS in your first close.
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