Short answer: give every listing an accurate shipping profile (packed weight, card plus packaging). Turn on USPS First-Class Mail Letter before your shows so small, cheap card shipments go as a stamped-letter-priced envelope. Let Smart Bundling combine a buyer's purchases. Print the label Whatnot generates and ship within 2 business days. All figures below are from Whatnot's help center for US sellers, checked November 2, 2026.
How Whatnot shipping works
Whatnot's Shipping for sellers in the US page: "Whatnot generates a prepaid, tracked label for every order using the carrier and service you choose in Shipping Settings, and buyers pay the shipping rates shown below at checkout." After a sale, "Whatnot quotes, bundles, and generates the label automatically." That is the big difference from TCGplayer, where you buy your own postage.
The shipping profile is what drives all of it. Whatnot uses it to "Calculate what buyers pay for shipping", "Determine which shipping services are available", "Generate the shipping label after a sale" and "Combine items into shipments using Smart Bundling™".
Shipping profiles for cards
"A shipping profile tells Whatnot the packed weight of your item, including the item, box or mailer, and any packaging materials." Get it wrong in either direction and it costs someone: too low and "the shipping label may be underpaid" (you may pay the difference as a carrier adjustment); too high and "buyers may pay more for shipping than necessary." Whatnot's tip: "Use a scale to weigh your item and packaging materials." A card in a penny sleeve and toploader inside a #10 envelope comes to about 14.7 g (0.52 oz) by our card shipping weight calculator.
Suggested or custom? Whatnot says to use a suggested profile when the item is standard size, can ship with other items and you don't need to limit bundling. That fits most singles. A custom profile is for things like fragile or boxed items, or when you want to cap how many ship together or set your own incremental weight.
Note for card sellers: a custom profile changes two things. With a max bundle size set, items "only bundle with other items using the exact same custom profile". And items that use a custom shipping profile or max bundle size can't ship by First-Class Mail Letter (below).
What buyers pay (US)
Whatnot's US rates, "effective July 31, 2026", which "include Whatnot's handling fee":
| Service | Package weight | Buyer pays |
|---|---|---|
| First-Class Mail Letter (plain white envelope) | Up to 3 oz | $0.78 / $1.09 / $1.39 by ounce |
| USPS Ground Advantage | Under 4 oz | $4.47 |
| USPS Ground Advantage | 4 oz to under 8 oz | $4.85 |
| USPS Ground Advantage | 8 oz to under 12 oz | $5.25 |
| USPS Ground Advantage | 12 oz to under 16 oz | $6.75 |
| USPS Ground Advantage | 1–5 lbs | $7.75 flat, any US address |
Heavier boxes, Priority Mail, Flat Rate and the UPS pilot are on Whatnot's page; card singles rarely need them. Every Ground Advantage and Priority Mail label bought on Whatnot "includes coverage for up to $100 of shipment value"; First-Class Mail Letter labels are not covered.
Free or cheaper shipping. "By default, buyers pay for shipping on Whatnot." Some sellers can choose to pay all domestic shipping, or set the most a buyer pays during a show (Whatnot's example: a $7.75 cap on a $20 shipment means the buyer pays $7.75 and you pay $12.25). These settings apply to shows only, and "aren't available to all sellers right away or in all regions."
First-Class Mail Letter: the Whatnot PWE
"USPS First-Class Mail Letter (FCML), also known as plain white envelope (PWE), is an optional shipping service that U.S. sellers can turn on for eligible card and sticker orders." You turn it on before the show (Seller Hub, Shipping, Domestic Shipments); it can't be added after a sale. A shipment qualifies only if all of this is true:
- Items listed in Trading Card Games, Sports Cards or Stickers, sold during a live show, not using a custom shipping profile or max bundle size
- 5 or fewer items, 3 oz or less total
- "a total shipment value of $20 or less" ("For some sellers this limit is based on shipment value of $50 or less")
- A buyer in the US
If a shipment stops qualifying (too heavy, more than 5 items, too valuable), Whatnot upgrades it to Ground Advantage or Priority Mail. The envelope must meet USPS letter rules: 5 to 11½ inches long, 3½ to 6⅛ inches wide, no more than ¼ inch thick, flexible and even, with no "Rigid cardboard or stiff inserts that don't bend", bubble mailers or plastic sleeves as the outside. Packing a card so it stays flexible: ship cards in a plain white envelope.
Tracking is limited: "only available within Whatnot order details", with up to three updates, and some envelopes get none. Whatnot recommends scanning the whole envelope with the in-app scanner at drop-off as proof of shipment. Payouts for FCML start "10 days after label creation" (or right away with Early Payout).
Bundling: Smart Bundling
"When a buyer purchases multiple items from you, Smart Bundling™ automatically determines the most cost-effective way to package and ship those purchases." Purchases bundle when they're from the same buyer, in the same sales channel (a show, or outside a show) and the profile has no max bundle size. "At this time, in-show and out-of-show purchases can't bundle together."
Cards bundle cheaply because of incremental weights: for Trading Card Games and Sports Cards on the 0–1 oz profile, each additional card from the same category adds 0.5 oz instead of a full profile weight. You can still bundle or unbundle by hand in Seller Hub, but "only bundle orders from the same buyer" and only before generating labels. Whatever you do, "make sure your packages match the shipments shown in Seller Hub"; packing items together without bundling them on Whatnot first can stall tracking and delay your earnings.
Weekly Bundling (a buyer's purchases grouped over a week) is listed for sellers in Australia, Austria, Canada, Germany, Japan, the Netherlands and the UK, not the US.
Labels and ship time
- Use Whatnot's label. "Always use a Whatnot-generated shipping label unless you've been approved for Bring Your Own Label (BYOL). Using another label can prevent tracking updates and delay your payout." In the US, BYOL is listed for the Wholesale category.
- Sizes. 8.5 × 11 in for standard printers or 4 × 6 in for thermal printers. Bulk label generation is on the Shipments page on whatnot.com (the app does one at a time), and packing slips can be exported with the labels.
- Ship time. "Ship orders within 2 business days of the sale. Scan each package with the in-app scanner when you hand it to USPS."
- Weight changes. "Starting November 4, 2026, weight-based adjustments on Whatnot USPS labels are charged to your ledger" for shipments sent on or after that date. Another reason to weigh before you list.
Selling on TCGplayer too?
On Whatnot the label comes from Whatnot, so there is nothing for an outside label tool to do there. TCG Speed Shipper is built for TCGplayer, where you supply the postage and the address: it turns TCGplayer's Export Shipping file into address labels, #10 envelopes and packing slips, and flags which orders TCGplayer says need tracking (recommended over $20, required over $49.99, signature over $250). It can also read other marketplaces' order files with one row per order: you match the name and address columns once and the layout is remembered on your device. Where to sell what: TCGplayer vs. eBay vs. Whatnot.
FAQ
What shipping profile should I use for trading cards on Whatnot?
Whatnot says to pick the suggested profile that matches the item's packed weight: the card plus its packaging. For Trading Card Games and Sports Cards, the 0-1 oz profile bundles at 0.5 oz for each additional card from the same category. Use a custom profile only if you need to limit bundling or set your own weights.
Can I ship cards in a plain white envelope on Whatnot?
Yes, with USPS First-Class Mail Letter (FCML), which you turn on before a live show. A shipment qualifies only if it is Trading Card Games, Sports Cards or Stickers sold in a live show, 5 items or fewer, 3 oz or less, a total value of $20 or less (or $50 for some sellers), to a US buyer, and the items don't use a custom shipping profile.
What do Whatnot buyers pay for shipping?
For US sellers, Whatnot's rates effective July 31, 2026 are $4.47 for USPS Ground Advantage under 4 oz, up to $7.75 flat for 1-5 lbs, and $0.78, $1.09 or $1.39 for First-Class Mail Letter up to 3 oz. Buyers pay these at checkout unless you cover some or all shipping in your show settings.
Can I use my own shipping labels on Whatnot?
Not normally. Whatnot says to always use a Whatnot-generated label unless you're approved for Bring Your Own Label, which in the US is listed for the Wholesale category. Using another label can stop tracking updates and delay your payout.
How fast do I have to ship Whatnot orders?
Whatnot's US shipping page says to ship orders within 2 business days of the sale and scan each package with the in-app scanner when you hand it to the carrier.
Sources
- Whatnot Help: Shipping for sellers in the US (checked November 2, 2026)
- Whatnot Help: Choose shipping profiles for your listings (checked November 2, 2026)
- Whatnot Help: USPS First-Class Mail Letter (FCML) shipping for sellers (checked November 2, 2026)
- Whatnot Help: How Smart Bundling works (checked November 2, 2026)
- Whatnot Help: Bundle or unbundle shipments (checked November 2, 2026)
- Whatnot Help: Use Weekly Bundling to save on shipping (checked November 2, 2026)
- Whatnot Help: Offer free or discounted shipping (checked November 2, 2026)
- Whatnot Help: Generate and print shipping labels (checked November 2, 2026)
- Whatnot Help: Bring Your Own Label (BYOL) (checked November 2, 2026)