# Księguś

> Księguś is the finance toolbox for small businesses and accounting offices in Poland: KSeF invoices, payments, finance, taxes and HR in one place. It fetches purchase and sales invoices from KSeF (Krajowy System e-Faktur, the Polish national e-invoicing system), lets the team approve them on a phone, prepares a payment file to upload in the company's own bank, and matches the bank statement to the invoices. It is not accounting software: it handles what happens in the company before the documents reach the accountant.

Key facts:

- Connects to KSeF through the official API of the Polish Ministry of Finance, using the company's KSeF token. Nothing to install.
- Never has access to a bank account and never sends money. It prepares a payment file (.pli or .txt) that the user uploads in online banking, and reads statements (MT940 from any bank, CSV from several popular ones).
- Each payee account is checked against the Polish VAT white list before payment.
- Built from modules that each company switches on or off: KSeF invoices (always on), issuing invoices, invoices from outside KSeF (forwarded by e-mail or uploaded as PDF or photo, always checked by a person before payment), payments, bank statement, vendors and customers, finance and taxes (VAT and CIT advance estimates), HR (contracts, shift schedule, hours, leave, sick notes), and a monthly export for the accountant (Excel or CSV).
- Accounting offices see all their client companies on one dashboard. Permissions follow each person's role in each company.
- The app and its e-mails are available in Polish, English, German and Ukrainian.
- Data stays in the European Union: the app runs on a server in Finland (Hetzner) with an encrypted backup every night in Warsaw (OVHcloud).
- Pricing per company, net of VAT (PLN a month): Start 0 (free forever: KSeF invoices without limit, up to 10 issued invoices a month), Faktury 35 (unlimited issuing, invoices from outside KSeF), Entrepreneur 95 (payment files, bank statement matching, vendors), PRO 175 (adds finance, taxes and HR). Paying for a year costs 10 months. Every new company gets PRO free for 30 days, no card needed; payment is by bank transfer.
- Accountants and accounting offices use Księguś for free: the company pays for its plan, not per person. When an accounting office looks after at least 3 companies in Księguś, each of them pays 20% less.
- KSeF deadline: most Polish companies issue invoices in KSeF since 2026; from 1 January 2027 it applies to the smallest ones too, and penalties start.
- Not included: bookkeeping (księgi), tax returns, ZUS and payroll stay with the company's accountant.
- Polish terms people search for: program do KSeF dla małej firmy, pobieranie faktur z KSeF, akceptacja faktur w telefonie, plik przelewów .pli z faktur, uzgadnianie wyciągu bankowego z fakturami, biała lista VAT przed przelewem, aplikacja dla biura rachunkowego, grafik pracowników.
- Contact: kontakt@twojksiegus.pl. Operated by Volt and Amaranth sp. z o.o., ul. 55 Pułku Piechoty 34, 64-100 Leszno, Poland, NIP 6972347881, KRS 0000733234.

## Pages

- [Home (Polish)](https://twojksiegus.pl/): what the app does, who it is for, screenshots, pricing and FAQ
- [Pricing (Polish)](https://twojksiegus.pl/#cennik): the four plans, monthly or yearly
- [For accounting offices (Polish)](https://twojksiegus.pl/#biura)
- [FAQ (Polish)](https://twojksiegus.pl/#pytania): what it replaces, bank access, data location, price, the KSeF deadline, supported banks
- [Getting started and the KSeF token (Polish)](https://twojksiegus.pl/pierwsze-kroki/)
- [Home (English)](https://twojksiegus.pl/en/)
- [Home (German)](https://twojksiegus.pl/de/)
- [Home (Ukrainian)](https://twojksiegus.pl/uk/)
- [Data security (Polish)](https://twojksiegus.pl/bezpieczenstwo/): hosting, encryption, backups, sign-in protection, GDPR rights, subprocessors
- [Data security (English)](https://twojksiegus.pl/en/bezpieczenstwo/)

- [News (Polish)](https://twojksiegus.pl/aktualnosci/): what is new in the app, one short post per feature
- [Your accountant in Księguś, free (Polish)](https://twojksiegus.pl/aktualnosci/ksiegowa-w-ksiegusiu/)
- [Everything from a KSeF invoice (Polish)](https://twojksiegus.pl/aktualnosci/pelne-dane-faktury-z-ksef/)

## Optional

- [News (English)](https://twojksiegus.pl/en/aktualnosci/)
- [Terms of service (Polish, binding)](https://twojksiegus.pl/regulamin/)
- [Privacy policy (Polish)](https://twojksiegus.pl/polityka-prywatnosci/)

- [Data security (German)](https://twojksiegus.pl/de/bezpieczenstwo/)
- [Data security (Ukrainian)](https://twojksiegus.pl/uk/bezpieczenstwo/)
- [security.txt](https://twojksiegus.pl/.well-known/security.txt): how to report a vulnerability
- [Sign in to the app](https://app.twojksiegus.pl/login)