Blog

Wiedza dla sprzedawców wielokanałowych

Praktyczne poradniki o sprzedaży na Allegro i Amazon, automatyzacji zamówień, synchronizacji stanów, KSeF i wysyłce — bez lania wody.

Law

Returns & Complaints in E-commerce: Seller Duties

Statutory warranty vs guarantee, 2 years of liability, 14 days to reply and to return, durable medium and exceptions. Seller duties in e-commerce.

30 czerwca 2026 11 min czytania
Law

VAT OSS for an Online Store — How to File in 2026

The EUR 10,000 EU-wide threshold, VIU-R registration, the quarterly VIU-DO return, and 10-year records — how to settle VAT OSS in e-commerce.

27 czerwca 2026 10 min czytania
Pricing

Repricing on Allegro and eMAG: How It Works

Auto-price rules on Allegro and eMAG: how repricing works, how to set a margin floor and price floor, and how to avoid a price war.

24 czerwca 2026 11 min czytania
Allegro

Allegro Fees 2026 — What You’ll Really Pay to Sell

The sales commission is charged on shipping too. See how much Allegro really takes in 2026 and calculate your net margin on a concrete example.

21 czerwca 2026 11 min czytania
KSeF

KSeF: How to Connect Your Sales System via Token and API

A practical, technical guide: token vs. KSeF certificate, authentication via API 2.0, the FA(3) structure and testing on the MF test environment.

17 czerwca 2026 12 min czytania
KSeF

KSeF for microbusinesses — deferral until when 2027

The KSeF deferral for the smallest businesses runs until January 1, 2027. We explain the PLN 10,000 limit, what counts, and when you enter for good.

14 czerwca 2026 10 min czytania
KSeF

KSeF and selling on Allegro — how to issue invoices

Receipt or invoice? When KSeF is mandatory for an Allegro seller, what the order→invoice→KSeF workflow looks like, and how to avoid common mistakes.

11 czerwca 2026 11 min czytania
KSeF

KSeF Penalties in 2026 — What to Avoid and How to Stay Safe

How much KSeF penalties cost, when they truly take effect, and 8 mistakes to avoid. A practical compliance checklist for e-commerce sellers.

8 czerwca 2026 11 min czytania
Marketplace

How to Sell on Empik Marketplace: Registration and Commissions

Registration, the 4.5 rating requirement, fees, categories and logistics — everything you need to know before you start selling on Empik Marketplace.

4 czerwca 2026 11 min czytania
Marketplace

How to Sell on Kaufland Global Marketplace — Guide

Registration, the EAN requirement, the fee model and reach of Kaufland Global Marketplace — a practical onboarding guide for Polish sellers.

1 czerwca 2026 11 min czytania
Marketplace

How to Sell on eMAG from Poland: Onboarding, Fees, VAT

A practical guide to selling on eMAG from Poland: RO/BG/HU markets, registration, EAN, listing translations, 7–25% commissions, logistics and VAT OSS.

29 maja 2026 11 min czytania
Seasonal

How to Prepare Your Store for Black Friday 2026 — Checklist

Black Friday 2026 operational checklist: inventory, packaging, couriers and SLAs, site performance, and customer service. No fluff, step by step.

26 maja 2026 12 min czytania

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