Stacey Knows

POSHMARK’S NEW HAZMAT RULE: WHAT SELLERS NEED TO KNOW RIGHT NOW Poshmark has rolled out a major update in response to USPS’s newly enforced Hazardous Materials (HAZMAT) regulations. Beginning July 12, 2026, USPS will apply a $50 Hazmat Non‑Compliance Fee to any package flagged for improper hazardous‑materials labeling — most often caused by reused boxes with old hazmat symbols. Poshmark will cover the full fee through July 31, 2026, and starting August 1, sellers will pay $5 while Poshmark absorbs the remaining $45.

This update affects every seller, regardless of what they ship. Even a simple clothing item sent in a box with an old battery icon can trigger the fee. Sellers must now treat packaging with the same care as the item inside.

WHAT TO DO AS A SELLER

• Use clean packaging — Choose new boxes or poly mailers whenever possible. If reusing packaging, inspect every side for old hazmat symbols, battery icons, or aerosol warnings.
• Remove or fully cover labels — Black out, peel off, or completely tape over any previous hazmat markings. Partial coverage can still trigger USPS scanners.
• Check your items — Electronics with lithium batteries, nail polish, perfumes, aerosols, and certain cleaners must follow USPS rules even if Poshmark allows them.
• Avoid prohibited items — Review Poshmark’s updated Terms of Service to ensure your listings comply.
• Monitor your balance — If a fee is applied, Poshmark will adjust your balance automatically with your next sale.
• Contact Support — If you believe USPS flagged your package incorrectly, request a review.

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COME SHOP MY POSHMARK CLOSET Stacey’s Closet (@staceytea12) | Poshmark

This article is for informational purposes only and does not constitute legal, postal, or regulatory advice. USPS policies, Poshmark guidelines, and hazardous‑materials regulations may change at any time. Sellers are responsible for ensuring their packaging, labeling, and shipped items comply with all current USPS, marketplace, and regulatory requirements. Always review the latest USPS Hazardous Materials guidelines and Poshmark shipping policies before mailing any item.