Running a sp. z o.o.
Setting up a limited company, the KRS, what it costs to run, ZUS for owners, Estonian CIT, and moving over from a JDG.
When you must register for VAT, why VAT-UE matters even if you are exempt, invoicing clients abroad, and what the national e-invoice system changes.

KSeF is Poland's national e-invoicing system. Who must use it and from when, what changes if you are VAT-exempt or on ryczałt, how to log in, and when penalties start.
Read the articleGoogle, Adobe and AWS invoices never reach KSeF; your invoices to foreign clients do. Where to download foreign invoices, which JPK marker, what your accountant needs.
Read the article240,000 PLN net a year from 2026, up from 200,000. How it is cut if you start mid-year, what counts, who can never use it, and the sale that ends the exemption.
Read the articleGoogle Ads or Adobe billed from abroad is an import of services. Even a VAT-exempt JDG registers for VAT-UE, files VAT-9M and pays 23%. AWS is different.
Read the articleReverse charge for EU clients, "np" for the rest of the world: what your invoice must say, when to register for VAT-UE, and how KSeF and euros work in 2026.
Read the articleUse the NBP rate from the business day before. How to convert EUR and USD invoices for income tax and VAT, with a worked example of exchange differences.
Read the articleUp to 450 PLN gross, a receipt (paragon fiskalny) with your NIP counts as an invoice in 2026. When to ask for an invoice, what counts as a cost, and the 2027 change.
Read the articleFaktura VAT, netto, brutto, zw, np, MPP, numer KSeF: every field on a Polish invoice translated into English, with what to check before you pay one.
Read the articleAsk the seller for a duplikat, download KSeF invoices again yourself, and learn what a bank statement cannot prove. Plus what to do about lost receipts.
Read the articleDrop documents in as they arrive. Komplet files them, checks them against your bank statement and tells you what is still missing. Free, for your Mac.
Mac only