
E-commerce4 min read
Landed cost: the ten margin points you cannot see
Inbound freight, duties and 3PL receiving belong in the cost of every unit. Leave them out and the gross margin on your P&L is a number you would not want to price from.
Industries · E-commerce brands
A deposit is sales net of fees, refunds, holds and ads, paid on the channel’s timing. We reconcile it back to the orders, then tell you which channels and SKUs made money after all of it.
Founder-led brands on Shopify and/or Amazon, $1M–$25M, 3–30 staff, a 3PL or your own warehouse, books in QuickBooks or Xero with A2X or Link My Books.

Channels
Selling on Shopify, Amazon, Walmart, TikTok Shop or Wholesale. Each pays on its own schedule, net of its own fees.
A payout is sales less processing fees, refunds, chargebacks and holds, paid on business-day timing. Booked as revenue, it understates sales and hides every fee. We run a clearing account per gateway and reconcile payout by payout.
One net settlement arrives about every two weeks, with sales, refunds, referral and FBA fees, storage, advertising, reimbursements and reserves netted together. We reconcile each settlement and post the fee lines to their own accounts.
Shopify, Amazon, Walmart, TikTok Shop and wholesale each pay on their own timing and fee schedule. We reconcile every channel to the bank and report a P&L per channel after fees, shipping, returns and ads.
Where it breaks
01
Gross margin looks fine until inbound freight, duties and 3PL receiving show up.
What we do
Perpetual inventory on a landed-cost method, a monthly COGS true-up, an inventory roll-forward and a write-down policy.
If landed cost is 35% of price but COGS records 25%, gross margin is overstated by ten points; inbound freight, duties and 3PL receiving are the usual gaps.4 (reported)
02
The Shopify report, the Amazon settlement and the bank deposit never agree.
What we do
A clearing account per gateway, A2X or Link My Books set up and reviewed, settlement-by-settlement reconciliation, and fee lines separated (referral, FBA, storage, ads).
Amazon disburses one net settlement about every 14 days, netting sales, refunds, referral and FBA fees, storage, ads, reimbursements and reserves.2 (reported)


03
Sales into a new state crossed a threshold and nobody noticed.
What we do
Nexus tracking by state from channel data and registration readiness. Records and registration readiness only; filing runs through your accountant or TaxJar/Avalara.
A remote seller with more than $100,000 of taxable sales into Florida in the prior calendar year must register and collect (effective July 1, 2021); there is no transaction-count test.5
04
We are growing and there is less cash every quarter.
What we do
A contribution-margin waterfall by channel and SKU with ad spend, fees, shipping and returns allocated; break-even ROAS.
Median DTC contribution margin fell from about 35% in 2021 to about 22% in 2025.1 (reported)
05
A big purchase order is due and there is no forecast behind it.
What we do
A cash-conversion dashboard, a PO-to-payout cash forecast, a comparison of financing offers on true cost, and books a lender will accept.


06
The 3PL invoice keeps growing and returns are one line in the P&L.
What we do
3PL invoice review, cost per order, a returns reserve and fulfilment cost allocated into landed cost.
Average e-commerce return rate (NRF and Happy Returns, 2025 Retail Returns Landscape); apparel runs 24–30%.3
07
Meta says one thing, GA4 another, and the payouts a third.
What we do
Ad spend by platform in the ledger, with MER and blended CAC computed from the books rather than the ad manager.
The monthly package
Computed from the reconciled books, not from the ad platform or the storefront dashboard. Ranges are typical published benchmarks, not targets we promise.
Contribution margin (CM1 / CM2 / CM3)
By channel and SKU, after fees, shipping, returns and ads.
Strong 20–35%1
typical (reported)
MER, blended CAC and LTV : CAC
Computed from the ledger, not the ad platform.
3–5 : 16
typical (reported)
Break-even ROAS and maximum CAC
The spend ceiling at which an order stops making money.
Cash conversion cycle and inventory turns
Days of inventory plus days to collect, less days to pay.
Weeks of cover and aged SKUs
What is sitting, what is selling, what needs a write-down.
Return rate and net cost per return
By SKU.
19.3% average3
typical
Fulfilment cost per order
Pick, pack, postage and storage, from the 3PL invoice.
$2–$3.20 pick and pack7
typical (reported)
Sales-tax exposure by state
Against each state’s threshold; records and registration readiness only.
Channel P&L
Shopify, Amazon and wholesale, each after its own fees and ads.
Channel and app exports reconciled to QuickBooks Online or Xero every month. We are not a certified partner of any of them. Sales-tax records stay registration-ready; filing runs through your outside accountant or TaxJar/Avalara.
Florida

E-commerce4 min read
Inbound freight, duties and 3PL receiving belong in the cost of every unit. Leave them out and the gross margin on your P&L is a number you would not want to price from.

E-commerce4 min read
Fees, refunds, chargebacks, sales tax and business-day timing all sit between an order and the deposit. Booking the deposit as revenue hides every one of them.

Cash5 min read
Retainage, pay applications, payroll every Friday and supplier terms that do not line up. Thirteen weeks is long enough to see a squeeze coming and short enough to be accurate.
Free · 30 minutes
You get a one-page note on what we heard and what we would propose.