If you need to change shipping details after a sale or Giveaway, you can edit a shipment before it's in transit.
Shipping adjustments help make sure your label matches the package you're sending. If something looks off, make any necessary updates before you drop off the package.
If the label doesn't match the package you're sending, the shipment may be refused, delayed, or charged additional postage.
In this article:
- When should I adjust a shipment?
- Can I still make an adjustment?
- How do I make a shipping adjustment?
- How much do shipping adjustments costs?
- How can I avoid shipping adjustments?
When should I adjust a shipment?
You may need to adjust a shipment if:
- The shipment weight or dimensions don't match the details entered when you listed the item
- You want to bundle multiple orders into one shipment
- You need to split a bundled shipment into separate shipments
- You want to change the shipping service (US only)
- You want to add insurance or signature confirmation (US only)
For help with other label changes, check Change or fix your shipping label.
Can I still make an adjustment?
Whether you can adjust a shipment depends on where it is in the shipping process:
- Before you generate a label: You can bundle items into one shipment.
- After you generate a label, but before you drop it off: You can update the weight, dimensions, or shipping service.
- Until the package is in transit: You can still split bundled items into separate shipments.
Note: Once your package is in transit, you can't make any further shipping adjustments.
How do I make a shipping adjustment?
You can edit a shipment on whatnot.com. Shipping adjustments aren’t available in the app.
- From Seller Hub, open the Shipments page
- Select the shipment
- Click Edit Shipping Details (before generating a label) or Generate New Label (if you already generated one)
- Make your updates
- Scroll down to Shipping Costs > Pending Adjustments to review any cost changes
- Save or generate your new label
If you've already generated a label, Whatnot will void the original label and create a new one.
Important: Always use the newest version of your shipping label to avoid issues with delivery, tracking, and payouts.
How much do shipping adjustments costs?
Shipping costs are calculated and charged at checkout. If you adjust a shipment after a sale, the shipping label cost may change.
If the updated label costs more than the original label:
- Whatnot may cover the additional cost through one of your free shipping adjustments.
- If the adjustment isn't covered by a free adjustment, you'll be charged the difference.
- Charges are deducted from your Whatnot account balance after the new label is generated.
- Review the charge in Seller Hub > Ledger on web or Seller Hub > Transactions on the app.
If the updated label costs less than the original label:
- The shipping charge paid at checkout won't change.
- Whatnot doesn't issue refund.
Before you confirm an adjustment, you'll see whether:
- It's free
- It requires an additional charge
- It uses one of your free shipping adjustments
Free shipping adjustments
Sellers receive 5 free shipping adjustments each week.
A free shipping adjustment means Whatnot covers any additional shipping costs from the adjustment.
Your allowance resets based on your seller location. Expand the section below to see:
- When your allowance resets
- Which adjustments count toward your allowance
- Which adjustments are always free or always charged
Sellers in the US
You receive 5 free shipping adjustments per week. Your allowance resets every Sunday at 7:00pm ET.
Some adjustments are always free and don't count toward your allowance. Others count toward your weekly allowance. Once you've used all five free adjustments, you'll be charged any additional shipping costs for eligible adjustments.
Always free
These adjustments are always free unless Whatnot identifies abuse:
- Weight changes within the same USPS pricing tier
- Under 1 lb: e.g. 4 oz → 8 oz (Ground Advantage or Priority Mail)
- Between 1–5 lbs: e.g. 2 lb → 4 lb
- Weight changes for Flat Rate boxes when Flat Rate shipping was applied before the sale or show
- Bundling shipments when the combined label cost is lower than shipping the orders separately
Covered by your 5 free adjustments
These adjustments count toward your weekly allowance:
- Weight increases that move into a higher USPS pricing tier
- From under 1 lb → 1–5 lbs (e.g. 4 oz → 2 lb)
- From 1–5 lbs → over 5 lbs (up to 5 lb increase, e.g. 2 lb → 6 lb)
- From over 5 lbs → higher weight (up to 5 lb increase, e.g. 7 lb → 10 lb)
- Unbundling shipments when separate labels cost more than the bundled label
- Increasing dimensions to:
- Over 1 cubic foot (1,728 in³)
- Any dimension over 22 inches
- Opting out of Flat Rate shipping (e.g. switching from a 6 lb Flat Rate label to a 6 lb Ground Advantage label)
- Seller-initiated upgrade from First-Class Mail Letter (FCML) to Ground Advantage or Priority Mail
Always charged
These adjustments aren't covered by the free adjustment allowance:
- Adding insurance or signature confirmation
- Weight increases greater than 5 lbs in a single adjustment
- Weight increases from under 1 lb to over 5 lbs
- Increasing dimensions beyond 2 cubic feet
Sellers outside the US
You receive 5 shipping adjustments per week. Your allowance resets every Monday at 12:01am UTC.
Once you've used all five free adjustments, you'll be charged when a shipping adjustment increases the cost of the label.
Examples include:
- Increasing shipment weight or dimensions after the sale
- Switching to a more expensive shipping service
This applies to both domestic and international shipments.
Check how many free adjustments you have
To view your remaining free adjustments:
- From the web, open the Shipments page in Seller Hub.
- Open the sidebar (before selecting a specific shipment).
- Check your Label adjustment allowance.
How can I avoid shipping adjustments?
Most shipping adjustments can be avoided by setting up shipping accurately before you sell.
- Weigh items with packaging included
- Use the correct shipping profiles when listing
- Review shipping settings before going live
- Check custom shipping profiles if your items need special handling or strict bundling
Accurate shipping details upfront can help prevent fulfillment delays, additional shipping charges, and delivery issues.
Shipping adjustments are meant for occasional corrections, not as a replacement for accurate shipping setup.
Repeated issues with inaccurate shipment details may lead to account action under Whatnot’s What Actions We Take policy.
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