Update: Flat Rate Shipping Is Still Available, But It Costs More
There’s been another update to Whatnot’s shipping changes. While Whatnot previously indicated that Flat Rate shipping would be going away, Flat Rate is still available for a limited time.
The catch? The price has increased.
Here’s what sellers and buyers can currently expect:
- USPS Ground Advantage: $7.75 for packages up to 5 lbs.
- Flat Rate shipping: $12.99
- Flat Rate availability: Still available, but only for a limited time
For most orders weighing 5 lbs. or less, the default Ground Advantage rate of $7.75 will be the more affordable option.
Flat Rate can still make sense for heavier shipments, especially for sellers moving bundles, casepacks, or other dense merchandise. However, with the price now at $12.99 and Whatnot saying the option is temporary, sellers shouldn’t count on Flat Rate being part of their long-term shipping strategy.
What This Means for Whatnot Sellers
The biggest thing sellers should be aware of is packaging. If your order is shipping via USPS Ground Advantage, you cannot use USPS Priority Mail or Priority Mail Flat Rate packaging.
That means now is a good time to start stocking up on plain shipping boxes and poly mailers if you’ve relied heavily on free USPS Priority Mail supplies in the past.
The good news is that the $7.75 Ground Advantage rate covers packages all the way up to 5 lbs., which should work well for many clothing bundles, smaller reseller lots, and everyday Whatnot purchases. Click here to get free Ground Advantage boxes.
For heavier orders, the temporary $12.99 Flat Rate option may still be worth using while it lasts. But sellers should prepare for the possibility that it will eventually disappear, as Whatnot originally announced.
Original Article
If you sell on Whatnot, one of the biggest changes of 2026 is on the way.
Starting July 31st, Whatnot plans to introduce lower USPS Ground Advantage shipping rates that will reduce shipping costs for most buyers by approximately 20%. While that’s great news for shoppers, it also means sellers will need to rethink how they package and ship their orders.
Here’s what you need to know.
The Good News: Lower Shipping Costs Could Mean More Sales
Shipping costs are one of the biggest reasons buyers hesitate to bid.
If Whatnot can reduce shipping prices by around 20%, buyers may be more willing to:
- Bid on lower-priced items
- Purchase multiple lots
- Try new sellers
- Make impulse purchases
Lower shipping costs make your auctions more attractive without you having to lower your prices.
Ground Advantage Will Become the New Standard
The biggest change is that USPS Ground Advantage will become the preferred shipping method for most orders.
Ground Advantage typically delivers in:
- 2 to 5 business days
- Includes tracking
- Includes up to $100 insurance
For most Whatnot purchases, buyers probably won’t notice much difference in delivery times.
Priority Mail Isn’t Going Away
Priority Mail will still be available.
However, Whatnot says it will cost significantly more than Ground Advantage while arriving only about one day sooner in many cases.
That means many buyers are likely to choose the cheaper shipping option unless they’re purchasing expensive or time-sensitive items.
Flat Rate Shipping Is Going Away
One of the biggest surprises is that USPS Flat Rate shipping will no longer be an option.
Many resellers relied on Flat Rate boxes because:
- Boxes were free from USPS
- Pricing was predictable
- Heavy items often shipped cheaper
With Flat Rate disappearing from Whatnot labels, sellers will need to find new packaging solutions.
Stop Using Priority Mail Boxes for Ground Advantage
This is the change that could become expensive.
If you print a Ground Advantage label, you cannot ship it in:
- Priority Mail boxes
- Priority Mail envelopes
- Flat Rate boxes
- Flat Rate envelopes
USPS considers those packaging materials to be exclusive to Priority Mail service.
According to Whatnot, using Priority packaging with Ground Advantage labels could result in:
- Your package being returned
- USPS charging approximately $20 per package
- The fee being billed directly to your Whatnot account
If you’ve been stocking up on free USPS boxes, it’s time to separate them from your Ground Advantage supplies.
Time to Invest in Shipping Boxes
Many resellers have relied on free USPS packaging for years.
Now it may make sense to purchase:
- Corrugated shipping boxes
- Poly mailers
- Bubble mailers
- Packing paper
- Packing tape
Buying in bulk usually lowers your cost per shipment.
Some popular suppliers include:
- Uline
- U-Haul
- Amazon
- Walmart
- Local packaging distributors
- Costco and Sam’s Club (seasonally)
- Zoro (this is where we buy our boxes)
You may also be able to recycle clean boxes from inventory shipments if they’re still sturdy enough for resale shipping.
Clothing Sellers May Benefit the Most
If you sell:
- Clothing bundles
- Shoes
- Accessories
- Plush
- Toys
- Household goods
Ground Advantage will likely become your default shipping option.
Many of these items aren’t time-sensitive, making the lower shipping costs especially attractive for buyers.
Heavy Sellers Should Recalculate Costs
If you regularly sell:
- Books
- Tools
- Small appliances
- Electronics
- Liquidation bundles
You may want to compare:
- Ground Advantage
- Priority Mail
- Box sizes
- Weight tiers
The cheapest shipping option may look different than it did just a few months ago.
How to Prepare Before August
To avoid surprises, start getting ready now.
1. Separate your USPS supplies
Keep Priority Mail boxes separate from any boxes you’ll use with Ground Advantage.
2. Order shipping supplies
Don’t wait until everyone else starts buying boxes.
3. Measure your common items
Knowing your typical box sizes will help you pack faster.
4. Save sturdy shipping boxes
Many inventory shipments include perfectly reusable boxes.
5. Update your shipping station
Having the right supplies organized will make live selling much smoother.
Could This Help Whatnot Grow?
Lower shipping costs remove one of the biggest barriers to buying online.
For resellers, that could mean:
- More bidders
- Higher sell-through rates
- Better buyer satisfaction
- Increased repeat customers
While losing Flat Rate shipping will require some adjustments, many sellers may find that the increase in buyer activity more than offsets the inconvenience.
Final Thoughts
Every major marketplace eventually changes its shipping policies, and Whatnot is no exception.
The biggest takeaway is simple:
Ground Advantage is becoming the new normal.
If you’re prepared with the right packaging and understand when to use Ground Advantage versus Priority Mail, you’ll avoid costly mistakes and keep your shipping process running smoothly.
For many resellers, the lower shipping costs could actually make live selling on Whatnot even more attractive than before.
