Best Amazon profit analytics tools in 2026 compared
The best Amazon profit tracking software is the one whose COGS method matches how you buy, because manual, average, FIFO and PO-linked cost disagree a lot.
Last reviewed 6 min readSupplyForge LLC
The best Amazon profit tracking software is whichever one sources COGS the way you actually buy — manual entry, average cost, FIFO and PO-linked landed cost produce different numbers from identical sales. Every tool in this category reads the same Amazon settlement data, so fees and revenue rarely differ between them. Cost basis is where they diverge.
This page compares eight profit tools on how each one gets its cost basis, then works a single 120-unit example through four cost methods to show the size of the gap. Vendor facts were checked against primary sources on 2026-08-03.
The four ways a profit tool gets its cost basis
Every Amazon profit tool uses one of four cost-basis mechanisms, and the mechanism — not the dashboard — determines whether the profit number is right.
- Manual entry. You type a cost per SKU, or upload a CSV of costs. The number is a snapshot: it applies to every unit sold from the moment you enter it, including units bought at a different price.
- Average cost. Purchases are pooled and divided by units. Smooth, easy to compute, and structurally wrong on the month after a price rise because it back-dates the new cost onto old inventory.
- FIFO. Units are consumed in the order they were bought, so the cost of a sale is the cost of the oldest remaining units. This is the method that matches how FBA inventory physically flows, and the reasoning behind it is set out in FIFO COGS for Amazon sellers.
- PO-linked landed cost. FIFO, but each purchase order's freight, duty and prep are allocated across its own lines first, so the unit cost consumed is the delivered cost, not the invoice cost.
Wholesale margins are thin enough that the difference between these four is not academic. It routinely exceeds the entire net margin on a SKU.
One SKU, four cost methods, four profit numbers
The same 120 units sold produce a $300 spread in gross profit across the four cost methods, on a SKU with $2,994 of revenue.
The setup: you bought 100 units at $8.00 in March with $150 of freight on that purchase order, and 100 units at $11.00 in June with $220 of freight. In July you sold 120 units at $24.95, for $2,994.00 in revenue. Freight works out to $1.50 per unit on the March order and $2.20 per unit on the June order.
| Cost method | COGS on 120 units | Gross profit before Amazon fees | What it gets wrong |
|---|---|---|---|
| Manual entry, latest cost typed in ($11.00) | $1,320.00 | $1,674.00 | Charges June's price against 100 units bought in March |
| Average cost ($9.50) | $1,140.00 | $1,854.00 | Blends two lots that were never physically mixed; ignores freight |
| FIFO on invoice cost | $1,020.00 | $1,974.00 | Correct consumption order, but freight never enters the number |
| FIFO on PO-allocated landed cost | $1,214.00 | $1,780.00 | Closest to true, and the hardest to maintain by hand |
The most accurate figure, $1,780.00, sits in the middle rather than at either extreme — freight pushes landed cost up while FIFO pulls unit cost down. The $300 spread between the highest and lowest answer is $2.50 per unit, or 10.0 percent of revenue on this SKU. At a 15 percent net ROI target, that gap is larger than the profit being measured.
How eight profit tools source COGS
The eight tools split cleanly into those that take cost as a typed input and those that derive it from a purchase order.
| Tool | How cost gets in | Basis | Freight and landed cost |
|---|---|---|---|
| Forge Command | Purchase order lines, per-SKU cost seeding, and settlement flat files | FIFO | Freight allocated across PO lines into landed cost |
| Sellerboard | CSV per SKU, or a Closed purchase order that prompts a new COGS batch | FIFO | PO exports include allocated logistics cost and total cost per unit |
| SellerLegend | Manual and import, plus its own purchase-order capability | Not documented publicly in detail | Not documented publicly in detail |
| Shopkeeper | Bulk upload of COGS and other expenses, per SKU | Per-SKU cost | No supplier price-list or PO path |
| InventoryLab | Captured at listing time on a batch, with supplier and purchase date | Per-batch buy cost | Expense, mileage and overhead tracking; no PO object |
| A2X | From a connected inventory system, or manual cost entry | Depends on the connected system | Out of scope by design; POs live in the connected IMS |
| Link My Books | Costs held in the tool, expensed as inventory sells through | Sell-through | Not documented |
| Seller Metrix | Manual COGS entry for the profit calculation | Per-SKU cost | Not documented |
Freight is the line that separates landed cost from unit cost
Freight is the single most common reason a profit dashboard reads high, because most tools have nowhere to put it. Five of the eight tools above accept a per-SKU cost figure and nothing else. A seller who types the invoice price into that field is reporting profit on a cost that excludes inbound freight, duty, and prep — and on a wholesale purchase order with mixed weights, those costs are not evenly distributed across the lines.
The allocation method matters as much as the allocation itself. Splitting a $370 freight bill evenly across 200 units gives $1.85 per unit regardless of whether the unit weighs 2 ounces or 4 pounds, which overstates margin on the heavy SKUs and understates it on the light ones. Weight-based or value-based allocation across the PO lines is the fix, and it is covered in how to allocate freight across purchase order lines. Forge Command allocates freight at the PO line and carries the result forward as landed cost, which is the same number its ROI math uses on the Wholesale and Products tabs — one shared margin function means the three views cannot disagree.
Where Sellerboard and A2X genuinely win
Sellerboard is the better buy for most sellers reading this, and Forge Command does not beat it on the thing it does.
Sellerboard publishes a real price — Standard at $19/month monthly or $15/month annually — where Forge Command publishes none and has no self-serve billing at all. Sellerboard's Amazon fee, refund and reimbursement modelling is deep and mature, its changelog shows roughly monthly releases, and it already covers the FIFO and PO-to-COGS path described above. Its supplier directory holds contact name, phone, email, address, currency and payment terms, so the common claim that Sellerboard has no supplier record is simply wrong. What Sellerboard does not have is a CRM pipeline, outbound sequencing, call logging, or supplier price-list ingestion.
A2X wins a different argument. If an accountant or bookkeeper touches the books, A2X's settlement-to-ledger journals for QuickBooks Online, Xero, NetSuite and Sage are the category standard for accrual-correct reporting, and no dashboard tool substitutes for that. A2X's Amazon plans start at $29/month for up to 200 orders, though that Mini tier excludes COGS. Forge Command's own P&L is settlement-derived, but it is not an accounting connector and does not produce journals for a general ledger.
Frequently asked questions
Why do two Amazon profit tools show different net profit for the same month
Both tools read the same settlement data, so revenue and Amazon fees usually agree. The difference is almost always cost basis: one is using a typed per-SKU cost, the other FIFO or landed cost. The topic is covered in why Amazon profit tools disagree.
Is FIFO or average cost better for an Amazon wholesale seller
FIFO matches how FBA inventory physically moves and how supplier price rises actually hit your P&L, so it is the better default for wholesale. Average cost smooths a price increase across units bought before it, which flatters margin in the month it matters most.
Does landed cost include Amazon FBA fees
No. Landed cost is the delivered cost of a unit into the warehouse — invoice price plus inbound freight, duty, and prep. Amazon referral and FBA fees are deducted after the sale, on the revenue side, and are covered in how to calculate landed cost for Amazon wholesale.
Which profit tool should a seller with purchase orders choose
Choose one whose cost basis derives from the purchase order rather than a typed field. Sellerboard, SellerLegend and Forge Command all have a PO-to-cost path; Shopkeeper, Seller Metrix and Link My Books expect the cost to arrive some other way.
What does Forge Command charge for profit analytics
Forge Command has no published pricing and no self-serve billing yet, so no figure can be given. Contact SupplyForge. Every competitor price on this page was read from that vendor's own pricing page on 2026-08-03.