A rise in WB fees and the 45-day notice period: how to read a change to the offer

When Wildberries raises fees or changes the tariff grid, the seller receives a notice — often with a reference to a period of about 45 days. That is not “platform courtesy.” It is part of the logic of a contract of adhesion and of the platform-economy rules: material terms are changed with notice, and continuing to work after the effective date is usually read as acceptance. The other question is whether you managed to lock in the old and the new version and to calculate the economics before the remaining stock is already in the warehouse.

What 45 days’ notice means

The notice period gives a window for a decision: stay on the new terms, cut shipments, withdraw the goods, or diversify the channel. It does not cancel the platform’s right to change the offer as a contract of adhesion, and it does not guarantee a “rollback” of the tariff on your complaint. The practical value of the period is time to recalculate margin and to archive documents, not an illusion of a seller veto.

A related review of force majeure and of how to read WB and Ozon offers in general is in the WB and Ozon offer: force majeure and risks.

Where to look for a fee increase in the documents

1. The offer and the edition number

• The date and number of the offer (for example, the July 2026 updates) — record them in a note to yourself
• The block on changing the terms, and what counts as acceptance
• The link to the tariff annexes — the percentages often “live” there

2. Tariff annexes and categories

• The fee for your product categories, before and after
• Logistics, storage, and acceptance — not only “a percent of the sale”
• Promotions and special terms that cancel the margin you are used to

3. The notice in the seller account and by email

• The publication date and the effective date of the changes
• The list of affected terms (it is not always complete — check it against the PDF)
• A screenshot and a PDF of the notice in the dispute archive

Continuing to sell means accepting the terms

In the logic of a contract of adhesion, the typical construction is this: if you keep listing and shipping after the effective date, you have accepted the new edition. Objections that “I never clicked agree” are weak if goods are leaving the platform warehouse. So the decision to leave, stay, or cut back needs to be made inside the notice window, not after the first payout at the new percent.

1. Recalculate margin on the top SKUs at the new tariffs
2. Compare the two editions of the offer and annexes, line by line
3. Decide on the remaining stock: a sale, a withdrawal, or a pause in supplies
4. Record the decision and the dates in correspondence with accounting and partners

Contracts with suppliers: do not leave a gap

If you sell someone else’s goods, a fee increase hits your margin, while the supplier may treat the price as “fixed.” It is worth writing in advance:

• Who bears a change in marketplace tariffs
• The threshold at which the purchase price is revisited
• The period for notifying each other when the platform offer changes

A draft of that contract: draft a contract.

A 10-minute checklist

Related reading

• The WB and Ozon offer: force majeure
• Comparing contract versions
• Hidden clauses in a contract
• Agreeing edits in a contract

Short conclusion

A 45-day notice period is a window for the archive, the recalculation, and the decision, not a right to block a fee increase. The working scheme for a seller: a PDF of the old and the new edition, a comparison of the text, and a decision on remaining stock before the effective date. Continuing to sell after that date is almost always read as acceptance of the new terms.