This Walmart WFS calculator estimates the fulfillment fee Walmart Fulfillment Services (WFS) charges on every unit shipped, the storage fee on every cubic foot you hold, and your referral fee, so you can see profit per unit before you send inventory in. Pick the US or Canada, enter the item, and read the result. It is an estimate, not an invoice.
Rates as of October 28, 2026, from Walmart's own pages: the US WFS fees guide (last updated May 27, 2026) and the Canada WFS fees guide (last updated Jun 26, 2026). Walmart says fees are subject to change. Nothing you type leaves your browser.
Where the calculator has to guess
Walmart's fee pages leave some points open. Rather than hide them, here is how this tool reads each one.
- US tier order. The US table lists 21 to 30 lb at $15.55 plus $0.40 per lb, then 31 to 50 lb at a lower $14.55. The tool applies the table exactly as printed, so a 30 lb unit costs more than a 31 lb unit. Check the live page before you rely on that range.
- Packaging allowance. For US items of 1 lb or more, the Marketplace Learn fees guide says to use the greater of unit and dimensional weight and states the 0.25 lb packaging allowance only for items under 1 lb. Walmart's US pricing pages add 0.25 lb to every standard item and round up, with a worked example (8.63 lb dimensional weight + 0.25 = 8.88, billed at 9 lb). The tool follows the pricing pages, which gives the higher of the two readings.
- Oversize 2. The US page says unit weight will "also be priced starting at the 90 lb. rate." The tool bills at least 90 lb for Oversize 2 items.
- Canada 12 to 20 lb. The Canada table jumps from "each additional lb. above 11 lbs." at $0.40 to a fixed $18.00 at 21 lb, and the numbers do not reconcile. For 12 to 20 lb the tool adds $0.40 per lb to the 11 lb fee. The Canada page also gives no rule for how the "under 1 lb" and "1 to 3.9 lb" rows meet the round-up step, so units under 1 lb use the $5.50 row.
- Long-term storage. Neither fees guide says whether long-term rates replace or stack on the regular rate. The tool treats them as replacing it for the months past the threshold. If they stack, add $0.75 (US) or $0.80 (Canada) per cubic foot for each long-term month; budget for that higher case until your own statement shows which applies. Walmart's US pricing page (marketplace.walmart.com/pricing) also still lists a single $2.25 rate for stock over 12 months, while the fees guide lists $2.25 for 366 to 450 days and $7.50 beyond.
How WFS fees work
You pay three kinds of cost on WFS, and the calculator covers all of them. Details on each follow, with Walmart's own limits.
Fulfillment fee
This is the per-unit fee for picking, packing and delivering an order. It depends on shipping weight, which is the greater of unit weight and dimensional weight. In the US, dimensional weight is length x width x height in inches divided by 139; in Canada the divisor is 300. Walmart's pricing pages in both countries add 0.25 lb for packaging before rounding up to the next pound (see the note above on how the US fees guide words this). Walmart measures with packaging included.
US standard items are 150 lb or less, with a longest side of 108 inches or less and longest side plus girth of 165 inches or less. Anything beyond that, up to 500 lb and a 120 inch longest side, is big and bulky at $155 plus $0.80 per lb over 90 lb. Girth is 2 x (width + height).
| US standard shipping weight | Base fee per unit (USD) |
|---|---|
| 1 lb or less | $3.45 |
| 2 lb | $4.95 |
| 3 lb | $5.45 |
| 4 to 20 lb | $5.75 + $0.40 per lb over 4 lb |
| 21 to 30 lb | $15.55 + $0.40 per lb over 21 lb |
| 31 to 50 lb | $14.55 + $0.40 per lb over 31 lb |
| 51 lb or more | $17.55 + $0.40 per lb over 51 lb |
US standard items can add $0.50 for apparel, $0.50 for hazmat, $1 for a retail price under $10, $3 for Oversize 1 and $20 for Oversize 2. These do not apply to big and bulky items.
Canada uses its own table (starting at $5.50 for units under 1 lb and $6.50 for 1 to 3.9 lb) plus a $4 oversize surcharge for units up to 150 lb with a longest side over 48 inches, a median side over 30 inches or longest side plus girth over 105 inches, and $35 for a longest side over 87 inches or longest side plus girth over 118 inches. Walmart notes a fuel surcharge of up to 7% may apply when gas is above $2 per litre.
Storage fee
Storage is billed per cubic foot, calculated as length x width x height in inches divided by 1,728, on a 30-day basis. In the US it is $0.75 per cubic foot per month from January to September. From October to December items stored more than 30 days add $1.50. Canada is $0.80, with $1.70 added for peak items stored over 30 days. Items held past 365 days move to long-term rates: $2.25 for 366 to 450 days and $7.50 beyond in the US (effective June 30, 2026), and $7 after 12 months in Canada. Aged stock gets expensive fast, which is why inventory planning matters.
Referral fee
The referral fee is separate from WFS. It is a percentage of the total sales price, which Walmart says includes shipping and handling, gift wrap and other charges, and the rate depends on your product category. Some categories use tiered rates. That is why the calculator asks you for your own percentage instead of assuming one.
Worked example: USD and CAD
These are made-up examples to show the arithmetic, not benchmarks. The 15% referral rate is an illustration, not a Walmart rate for your category.
| Example line | US item (USD) | Canada item (CAD) |
|---|---|---|
| Package | 2 lb, 10 x 8 x 4 in | 1 kg, 25 x 20 x 10 cm |
| Shipping weight | 3 lb (dimensional 2.3 lb + 0.25, rounded up) | 3 lb (2.2 lb + 0.25, rounded up) |
| Fulfillment fee | $5.45 | $6.50 |
| Storage, 2 months off-peak | $0.28 (0.185 cu ft) | $0.28 (0.177 cu ft) |
| Total WFS cost | $5.73 | $6.78 |
| Selling price / product cost / inbound | $29.99 / $8.00 / $0.60 | $39.99 / $11.00 / $0.80 |
| Referral fee at 15% (example) | $4.50 | $6.00 |
| Profit per unit | $11.16 | $15.41 |
| Margin | 37.2% | 38.5% |
Run the same numbers in the tool to check it. Notice that storage barely moves the result for a small, fast-selling item, while the fulfillment fee and the referral fee do most of the damage. Stock that sits for more than a year is where storage starts to hurt.
What this calculator leaves out
- Returns processing, disposal and removal fees, and unplanned prep chargebacks (for example $0.65 for a missing or incorrect label in the US).
- Advertising, taxes, duties and your inbound freight beyond the per-unit figure you enter. See inbound shipping for the workflow.
- Canada promotions. Walmart's Canada page lists discounts through January 31, 2027, such as 25% off fulfillment for new sellers who went live on or after February 1, 2026. They depend on your account, so the tool does not apply them.
- Canada big and bulky and hazmat fees. Walmart's Canada fee page does not list them, so the tool cannot price those items for Canada.
Walmart also offers its own WFS cost estimator, described on its WFS pricing page; use it to cross-check any listing that matters. For a wider view of every Walmart cost, read understanding Walmart seller fees, then WFS fee optimization for ways to lower them, and fulfillment in Canada for the cross-border picture.
Frequently asked questions
How much are WFS fees?
WFS charges a fulfillment fee per unit and a storage fee per cubic foot per month. In the US the fulfillment fee starts at $3.45 for a shipping weight of 1 lb or less and storage is $0.75 per cubic foot from January to September; Canada starts at $5.50 and $0.80. The calculator above works out your exact figure.
How do I calculate Walmart WFS fees?
Find the shipping weight, which is the greater of unit weight and dimensional weight, look it up in Walmart's table, add any oversize, apparel, hazmat or low-price fees, then add storage based on cubic feet and months stored. The calculator does these steps for you.
Does the WFS fulfillment fee include the referral fee?
No. The referral fee is a separate percentage of the total sales price, set by your product category. Enter your own rate in the calculator, found on Walmart's referral fee page.
What is the Walmart WFS storage fee?
In the US it is $0.75 per cubic foot per month from January to September, with $1.50 added from October to December for items stored over 30 days. Canada is $0.80, with $1.70 added at peak. Both countries charge more for stock held past a year.
Is there an official Walmart WFS calculator?
Yes. Walmart's WFS pricing page offers a cost estimator for fulfillment and storage. The same page says return processing, long-term storage and add-on services such as Prep Services are not included in that cost, and that actual costs may vary.
Does the calculator apply Canada promotions?
No. Walmart's Canada fee page lists temporary discounts that depend on your account, such as seller type and WFS penetration. Check your Seller Center for the discounts you qualify for.
Are the results exact?
No. They are estimates based on Walmart's published tables as of October 28, 2026. A few rules on those pages are unclear, and the calculator lists how it reads each one. Your Walmart statements are the source of truth.
Sources
- Marketplace Learn: WFS fees (US, last updated May 27, 2026) (checked October 28, 2026)
- Marketplace Learn: WFS fees (Canada, last updated Jun 26, 2026) (checked October 28, 2026)
- Walmart Canada: Walmart Fulfillment Services pricing (checked October 28, 2026)
- Walmart Marketplace: WFS pricing and cost estimator (checked October 28, 2026)
- Walmart Marketplace: Referral fees (checked October 28, 2026)