Sellerboard FBM: How to Track Your Fulfilled by Merchant Sales and Costs

Sellerboard is a profit analytics and business management tool for Amazon sellers, and it can be especially useful if you fulfill some or all of your orders through FBM.

FBM means Fulfilled by Merchant.

That means you, your warehouse, your team, or your 3PL handles storage, packing, shipping, and many of the real-world costs that can quietly reduce profit.

The tricky part is that an FBM sale can look profitable in Seller Central but become much less profitable once you add shipping, packaging, handling, returns, and extra operating expenses.

That is where Sellerboard FBM tracking becomes useful.

It helps you move from “how much did I sell?” to “how much did I actually keep?”

The Direct Answer: How Does Sellerboard Help FBM Sellers?

Sellerboard helps FBM sellers by showing net profit after Amazon fees, COGS, PPC, refunds, shipping costs, packaging costs, handling costs, and other expenses are included.

That matters because FBM sellers often control their own fulfillment costs.

If those costs are missing, your profit dashboard can look cleaner than your bank account feels.

With Sellerboard, you can enter and manage FBM shipping costs, product costs, indirect expenses, and other cost assumptions so your product-level numbers become much closer to reality.

What FBM Means For Your Profit Numbers

Amazon describes Fulfilled by Merchant as a way for sellers to fulfill customer orders themselves using tools and automation for inventory, orders, and shipping.

In plain language, FBM gives you more control over fulfillment, but it also gives you more cost responsibility.

You are not just selling a product.

You are also running the fulfillment math behind that product.

You can read Amazon’s official Fulfilled by Merchant page for the official FBM overview.

• You store or control the inventory outside Amazon FBA.

• You choose how orders are picked, packed, and shipped.

• You pay for shipping labels, boxes, mailers, tape, labor, and other fulfillment inputs.

• You need to track how those costs change by SKU, carrier, weight, marketplace, and time period.

• You need a profit dashboard that reflects those fulfillment costs instead of ignoring them.

Why Seller Central Alone Can Be Incomplete For FBM Profit Tracking

Seller Central is useful, but it is not always enough for clear FBM profit analysis.

It can show sales, fees, payouts, orders, and performance data.

But it may not fully understand the real cost of your warehouse, packaging, labor, carrier choices, returns processing, product cost changes, and indirect expenses.

Sellerboard’s own FAQ explains that Seller Central shows sales and payouts, while Sellerboard combines fees, ads, refunds, VAT/GST, shipping costs, and COGS into a net profit view.

How Sellerboard Tracks FBM Shipping Costs

Sellerboard lets FBM sellers add shipping costs so those costs are included in the profit calculation.

That can be done with shipping profiles, SKU-level costs, pricing models, tiered rates, or imported order-level shipping costs, depending on how your business works.

Sellerboard’s own FBM shipping update explains a setup flow where sellers can go to Products, Shipping Costs, add a profile, define active periods, choose a pricing model, set tiered rates, and assign the profile to products or SKUs.

• Use a default shipping cost if most products ship at a similar cost.

• Use SKU-level shipping costs when different products have very different shipping profiles.

• Use tiered costs if weight or order value changes shipping cost meaningfully.

• Use date ranges when shipping rates changed and old orders should not use the new rate.

• Use order-level import when you need more exact shipping cost matching.

Step-By-Step: How To Set Up FBM Costs In Sellerboard

The exact setup can change as Sellerboard updates the interface, but the logic stays the same.

You need to tell Sellerboard how your FBM costs work so the profit dashboard stops guessing.

• Open your Sellerboard account and connect the correct Amazon marketplace.

• Go to the product or shipping-cost area where FBM cost rules are managed.

• Create a shipping profile or cost rule that matches your shipping method.

• Add the cost logic, such as flat rate, tiered rate, SKU-specific rate, or imported order-level cost.

• Assign the profile to the right SKUs or products.

• Review several real orders and compare Sellerboard’s margin against your own shipping label receipts.

• Adjust the profile if the dashboard is still too optimistic or too conservative.

Flat Rate Vs SKU-Level Vs Order-Level Shipping Costs

The right FBM shipping setup depends on how different your products and orders are.

Some FBM sellers can use a simple average cost and get reasonably useful numbers.

Other sellers need more detail because one SKU may cost $4 to ship while another costs $13.

Do Not Forget Packaging And Handling Costs

Shipping labels are only one part of FBM cost tracking.

Packaging and handling costs can matter just as much when margins are tight.

A product might look profitable with only postage included, but lose margin once you add the real cost of a box, mailer, label, tape, insert, warehouse labor, and support time.

• Estimate the average packaging cost per order.

• Estimate the average handling or labor cost per order.

• Separate lightweight products from bulky products if their packaging costs differ.

• Review packing material costs every few months because supplier prices can change.

• Treat your time as a cost if you personally handle fulfillment.

COGS Tracking Matters Even More For FBM Sellers

COGS means Cost of Goods Sold.

For FBM sellers, COGS should usually include the landed cost of the product and the cost structure that gets it ready to sell.

Sellerboard supports COGS methods such as FIFO, constant, batch, period-based, and marketplace-specific COGS, giving sellers different ways to model changing product costs.

That is useful when your supplier price, freight cost, exchange rate, prep cost, or purchase quantity changes over time.

• Enter the product cost accurately for each SKU.

• Update COGS when supplier prices change.

• Include inbound freight or prep costs if they belong in your product cost model.

• Use date-based or batch-based logic when new inventory costs more than old inventory.

• Check product-level net profit after every major supplier or shipping cost change.

FBM Profit Formula You Can Use Inside Sellerboard

A simple FBM profit formula helps you understand why every cost field matters.

The point is not to make the formula scary.

The point is to make sure you are not making pricing and restocking decisions from incomplete numbers.

How Sellerboard Helps Compare FBA And FBM

Many Amazon sellers use both FBA and FBM.

For example, they may use FBA for fast-moving SKUs and FBM for oversized, seasonal, slow-moving, handmade, custom, fragile, or backup inventory.

Amazon’s own comparison of FBA and FBM explains that FBA lets sellers outsource packing, shipping, customer service, and returns, while FBM keeps fulfillment with the seller.

You can read Amazon’s FBA vs FBM guide for the official comparison.

Sellerboard can help because it lets you look at profit by product and fulfillment method instead of relying only on total sales.

FBM Return Tracking And Refund Cost Reality

Returns are painful for every Amazon seller, but FBM returns can be especially easy to underestimate.

The refund is only one part of the loss.

You may also lose outbound shipping, packaging, processing time, resale value, or the product itself if it comes back damaged.

Sellerboard’s return statistics and refund cost views can help you identify whether certain SKUs look profitable before returns but weak after returns.

• Check return rate by SKU.

• Check whether shipping-heavy products lose more on returns.

• Check whether customers mention damage, sizing, expectations, or quality issues.

• Check whether your packaging is causing avoidable returns or damage.

• Adjust pricing or fulfillment method if returns make a SKU unattractive.

Use Sellerboard Inventory Tools With FBM Stock

FBM is not only a profit problem.

It is also an inventory problem.

If you fulfill orders yourself, you need to know what is available, what is reserved, what is in transit, what is slow-moving, and what needs to be reordered.

Sellerboard includes inventory management tools, and that becomes more valuable when you are trying to connect stock decisions with profit decisions.

• Track days of stock left for FBM SKUs.

• Review whether profitable FBM products are close to stockout.

• Avoid reordering products that sell but do not keep enough margin.

• Plan supplier orders around both sales velocity and cashflow.

• Use profit data before deciding whether to move a SKU from FBM to FBA or keep it merchant fulfilled.

How Sellerboard Cashflow Helps FBM Sellers

FBM sellers often feel cashflow pressure because they pay many fulfillment costs before everything is fully settled.

You may need to buy packaging, pay carriers, pay staff, reorder products, handle returns, and still wait for payouts.

Sellerboard’s cashflow views can help you understand whether your business has enough cash for the next operational cycle, not just whether last month looked profitable.

• Use cashflow reporting to understand upcoming expenses.

• Check whether shipping and packaging costs are rising faster than sales.

• Review whether high-volume FBM SKUs create cash pressure.

• Avoid withdrawing profit before the next inventory and fulfillment bills are covered.

• Use cashflow data before increasing ads on a product that needs a large restock soon.

A Weekly FBM Review Routine In Sellerboard

FBM cost tracking only helps if you review the numbers regularly.

You do not need to stare at dashboards all day.

A short weekly check can catch problems before they become expensive.

• Check total FBM sales and net profit for the week.

• Sort products by net profit instead of only revenue.

• Review the worst-margin FBM SKUs and identify why they are weak.

• Compare estimated shipping costs against real label costs for a few sample orders.

• Check returns and refunds by SKU.

• Check inventory levels and reorder timing for profitable products.

• Update COGS, shipping profiles, or expense assumptions if something changed.

Common FBM Cost Tracking Mistakes

Most FBM profit mistakes come from incomplete cost assumptions.

The seller is making sales, but the hidden costs are quietly pulling down real profit.

• Using one average shipping cost for every product when products ship very differently.

• Forgetting packaging costs because they feel small per order.

• Ignoring labor because the owner is doing the packing personally.

• Failing to update COGS after supplier prices change.

• Not reviewing return losses by product.

• Judging products by sales volume instead of net profit.

• Not comparing Sellerboard assumptions against real invoices and receipts.

Who Should Use Sellerboard For FBM?

Sellerboard FBM tracking is useful when you already have real Amazon orders and need clearer profit visibility.

It is less useful if you have not started selling yet, because there are no real sales, refunds, fees, or shipping patterns to analyze.

Sellerboard FBM Vs Spreadsheets

You can track FBM profit in spreadsheets, and many sellers start that way.

The problem is that spreadsheets become harder to maintain as order volume, SKUs, marketplaces, returns, ads, and cost changes increase.

Sellerboard does not remove the need to think, but it can reduce the manual work of pulling scattered numbers together.

How To Test Whether Your Sellerboard FBM Setup Is Accurate

After setting up Sellerboard, do not assume everything is perfect immediately.

You should test it against a few real orders.

• Pick 5 to 10 recent FBM orders.

• Write down the real sale price, Amazon fee, COGS, shipping label, packaging, and handling estimate.

• Compare your manual estimate with the Sellerboard order-level profit.

• Look for differences caused by missing shipping, wrong COGS, missing expenses, or refund timing.

• Fix the setup before relying on the dashboard for pricing or reorder decisions.

When Sellerboard May Not Be Enough By Itself

Sellerboard can help you understand profit, but it is not a replacement for every system in your business.

You may still need shipping software, accounting software, a warehouse management system, carrier accounts, tax advice, bookkeeping support, or advanced ERP tools depending on your size.

• Use Sellerboard to understand Amazon profit analytics.

• Use shipping software to buy labels and manage fulfillment workflows if needed.

• Use bookkeeping or accounting tools for tax-ready financial records.

• Use warehouse tools if you manage complex bin locations, pick lists, or multi-channel inventory.

• Use professional tax and accounting help when financial decisions become high-stakes.

FAQ About Sellerboard FBM

What does Sellerboard FBM tracking do?

Sellerboard FBM tracking helps include merchant-fulfilled shipping, packaging, COGS, refunds, Amazon fees, and other costs in your profit calculations.

Can Sellerboard track FBM and FBA together?

Yes, Sellerboard can help you view Amazon performance across products and fulfillment methods so you can compare FBA and FBM profitability more clearly.

Does Sellerboard automatically know my real FBM shipping costs?

Sellerboard needs the right shipping-cost setup, profile, SKU-level cost, tiered rule, or imported order-level cost so the dashboard can reflect your real fulfillment cost more accurately.

Why are FBM shipping costs important?

FBM shipping costs are important because merchant-fulfilled profit can change dramatically once carrier fees, packaging, handling, returns, and labor are included.

Can Sellerboard help with FBM returns?

Yes, Sellerboard can help you review returns and refund costs so you can see whether certain products lose too much profit after returns are included.

Is Sellerboard useful for pure FBM sellers?

Yes, Sellerboard can be useful for pure FBM sellers because it helps connect sales, fees, product costs, shipping costs, refunds, expenses, inventory, and reports in one place.

Should I use Sellerboard instead of accounting software?

Sellerboard is mainly for Amazon profit analytics and operational decisions, while accounting software and professional bookkeeping may still be needed for tax-ready financial records.

How do I get the Sellerboard discount?

Use my Sellerboard discount link in this article to open the Sellerboard offer page and test the software with your own Amazon account.

Final Thoughts

FBM can be a great fulfillment option for Amazon sellers who want more control over storage, packing, shipping, and customer experience.

But that control comes with responsibility.

You need to know what each order really costs.

You need to include shipping, packaging, handling, COGS, returns, PPC, fees, and indirect expenses.

You also need to review your assumptions because carrier rates, supplier prices, and product costs can change over time.

Sellerboard helps by turning those scattered costs into a clearer profit picture.

It is not magic, and it still needs correct inputs.

But when you set it up properly, it can help you stop guessing and start managing your FBM products by real net profit.