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Poshmark will charge you for heavy packages shipped without an upgraded label
From October 26, 2026, if you ship a package over 5 lb on the standard label without upgrading it, Poshmark takes the upgrade cost from your earnings. Poshmark used to absorb this cost. The upgrade is $5.00 for 5.01-10 lb and $10.00 for 10.01-15 lb. A package over 15 lb on one label costs $15.00 at 15.01-25 lb, or the full USPS price over 25 lb.
Your net on a $10 / $25 / $50 sale: n/a / n/a / n/a
Only if you ship over 5 lb without upgrading: -$5.00 (5.01-10 lb), -$10.00 (10.01-15 lb), -$15.00 (15.01-25 lb on one label). Upgrading first costs the same and avoids a surprise deduction.
Source: Poshmark Blog, Oct 8, 2026 · verified
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Poshmark stops covering USPS's $50 hazmat fee: sellers pay it all from Oct 19
Poshmark paid all of USPS's $50 hazmat noncompliance fee through July 31, 2026, then charged sellers $5 for each flagged package from August 1. From October 19, 2026, sellers pay the full $50 from their earnings if USPS flags their package. Poshmark says the usual trigger is an old hazmat label on a reused box, including the small 'Limited Quantity' diamond.
Your net on a $10 / $25 / $50 sale: n/a / n/a / n/a
A penalty, not a per-sale fee: -$45 for each flagged package compared with the $5 share charged since Aug 1. Unflagged packages: no change.
Source: Poshmark Blog, Oct 5, 2026 (and Jul 9, 2026 USPS Policy Update) · verified
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