# Set up a company in Polska with Ekwo OS

Ekwo OS is open source software for keeping double-entry books in a database you own. This page is generated from the Polska pack, version 0.1.0; every code on it is read from the pack.

The Polska pack is **community**: contributed, and reviewed by nobody.

> Ekwo is software, not an accountant and not tax advice: a pack is a reading of the rules at the date of its version, and it can be wrong for your situation. Have a qualified professional in Polska check your set-up and your first declarations. See [what Ekwo is, and what it is not](https://ekwo.ai/disclaimer/).

## 1. What you need

- A [Supabase](https://supabase.com) project of your own. The free plan is enough to start; Ekwo does not create it, pay for it or have access to it.
- From its dashboard: the connection string (Connect → **Session pooler**), the Project URL and the `service_role` key (Project Settings → API). The key is used once, to create your first administrator, and is written nowhere. The anon (publishable) key, on the same page, is what you sign in with afterwards.
- Node 20 or later on your machine. Nothing else: no Supabase CLI, no Docker, no clone.

## 2. Install

One command. It asks for the rest as it goes.

```sh
npx ekwo-os init --country PL
```

- One chart of accounts: Plan kont odpowiadający załącznikowi nr 1 do ustawy o rachunkowości, 108 accounts.
- The books are kept in `pl`.
- The JPK_VAT z deklaracją — część deklaracyjna (wzór JPK_V7M(3) / JPK_V7K(3)) is filed on one of these cadences: `month`, `quarter`. The default is `month`. Pass `--vat-period <cadence>` to set yours.
- A financial year follows the calendar unless you pass `--fiscal-year-start YYYY-MM-DD`.

The same, with no question asked — every value your own:

```sh
npx ekwo-os init \
  --country PL \
  --db-url "postgresql://postgres.<ref>:<password>@<pooler host>:5432/postgres" \
  --supabase-url "https://<ref>.supabase.co" \
  --service-role-key "$SUPABASE_SERVICE_ROLE_KEY" \
  --org "Your Organisation" --company "Your Company" \
  --admin-email "you@example.com" \
  --yes
```

## 3. Before you go live

Four settings of your project no installer can reach: turn off self sign-up, keep two administrators, keep the `service_role` key off every other machine, and read the disclaimer. `init` prints them; [the installation guide](https://ekwo.ai/docs/install/#before-you-go-live-four-things-on-your-project) explains each.

## 4. A first invoice

Sign in as the administrator you just created, pick the company, and write a draft. `--dry-run` shows the entry the database would write, and writes nothing; `post` books it.

```sh
ekwo login --supabase-url https://<ref>.supabase.co --anon-key <publishable key> --email you@example.com
ekwo use "Your Company"
ekwo contact add "First Customer" --country PL --ref customer-1
ekwo doc new --contact "First Customer" --ref invoice-1 --line "name=Consulting,price=1000.00,account=8100,tax=PL-S-23"
ekwo post invoice-1 --dry-run
ekwo post invoice-1
```

A line names its account and its tax by code, never by rate. `8100` is the account the pack names for sales; the chart may carry a closer one for what you sell — services, a reduced rate — and `list_accounts` lists them.

What the invoice says about your company — its address, its VAT number — comes from the company’s profile, which the MCP tool `update_company_profile` fills; `ekwo init` sets only the name.

The domestic sale taxes the pack carries today. Which one a sale carries is a question about that sale, for you or your accountant: the list is the pack’s, not advice.

| Tax code | Name | Rate |
|---|---|---|
| `PL-S-23` | VAT sprzedaż 23% | 23 % |
| `PL-S-8` | VAT sprzedaż 8% | 8 % |
| `PL-S-5` | VAT sprzedaż 5% | 5 % |

## 5. With an AI assistant

The MCP server lets an assistant keep the books as you, under your own row level security, and never with the `service_role` key. [Configuring it](https://ekwo.ai/docs/mcp/), and [what an assistant must and must not do](https://ekwo.ai/docs/agents/).

## What the Polska pack carries

- Charts of accounts: Plan kont odpowiadający załącznikowi nr 1 do ustawy o rachunkowości (108).
- 18 taxes, at 0 %, 5 %, 8 %, 23 %.
- The JPK_VAT z deklaracją — część deklaracyjna (wzór JPK_V7M(3) / JPK_V7K(3)) (`PL-JPK-V7`), 64 boxes, filed month, quarter.
- Electronic invoices as `ksef-fa3`.
- Financial statements: Bilans według załącznika nr 1 do ustawy o rachunkowości, Rachunek zysków i strat — wariant porównawczy, według załącznika nr 1 do ustawy o rachunkowości.

## What it does not do

- No library of this repository writes the file of the PL-JPK-V7 yet: the return is computed and frozen here, and typed on the administration’s portal.
- No library of this repository reads a `mt940` bank statement yet.
- Nothing is sent to an administration, a Peppol network or a bank by the open source software: transmission is yours, or an operator’s you appoint.
- What the pack leaves out on purpose is in [its README](https://github.com/Ekwo-ai/ekwo-os/tree/main/packs/pl).