SKU Margin Check · free tool by ZroTek
Which SKUs lose money after TikTok Shop's latest fee changes?
On a VND 100,000 order, TikTok Shop Vietnam keeps between about VND 11,000 and 28,800, depending on product category and shop type. A seller who applies one shop-wide fee rate misprices some SKUs. SKU Margin Check computes the profit of each SKU from the seller's own commission rates.
A free calculator in the browser
The seller enters price after shop voucher, cost, commission rate, orders per month and the logistics fee for parcels over 10 kg. The tool returns platform fees per order, profit per order, margin, break-even price and break-even ROAS for TikTok's GMV Max ads, and flags loss-making SKUs.
All arithmetic is deterministic code. Seller data stays in the browser; the page sends and stores nothing.
SKU Margin Check for iPhone
Sellers keep their SKU catalog on the device, with no account, and see how each tracked TikTok Shop fee change moves the profit of the SKUs it affects. Data stays on the iPhone.
Free to download; saving SKUs needs Pro (monthly or yearly with a 3-day trial for first-time subscribers, or a one-time lifetime purchase). The web calculator stays free.
Or email hello@zrotek.xyz.
Why sellers need this now
| Date (2026) | Change |
|---|---|
| 3 Jul | Standard sellers: commission re-set per category, default 14% |
| 3 Aug | Mall sellers: default 15.5% → 16%; beauty and personal care up to 19.8%, health up to 18.8% |
| 30 Sep | 50% commission support for shops created 1 Jan to 26 Jun ends |
| 12 Oct | Logistics fee of VND 3,000 to 65,000 (before tax) per parcel over 10 kg, paid by the seller, not refunded on returns |
| 20 Oct | Mall sellers: new commission schedule, e.g. most Books categories 15% → 12.5% |
Updated 10 Oct 2026 from TikTok Shop Seller University and Tuổi Trẻ (23 Sep 2026). Sources are linked on the Vietnamese page.
ZroTek is built by a solo software engineer in Vietnam. Not yet incorporated. The tool calculates margins for pricing; it does not provide tax, accounting or legal advice.