The fee mechanics (exact, with sources)
**Fee rate:** 12% of the total order (item + shipping + tax) for shops with $10K+ in 12-month revenue. 15% for shops below $10K. Source: Etsy's official Offsite Ads FAQ.
**Attribution window:** 30 days. If a shopper clicks an Etsy-placed external ad and orders from your shop within 30 days — even if the order is for a different listing than the one in the ad — Etsy attributes that order to Offsite Ads and charges the fee.
**Maximum fee per order:** capped at $100 per order. Relevant only for very high-value orders ($600+ at 15%, $830+ at 12%).
**Who gets opted in:** every shop is enrolled by default. Shops with under $10K in trailing 12-month revenue can opt out in Settings → Marketing → Offsite Ads. Shops with $10K+ are mandatory enrolled and cannot opt out.
**When the fee actually applies:** only on orders attributed to Offsite Ads (a shopper clicked an Etsy-placed external ad before ordering). Orders from direct search, internal Etsy traffic, or your own external marketing don't trigger the fee. Typical attribution rate across categories: 18–35% of orders.
**Important to know:** Etsy doesn't show you which specific orders triggered the fee at the order level in real-time. The fees appear as line items in your monthly payment account. Tracking individual order attribution requires after-the-fact reconciliation.