# Set up a company in Argentina 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 Argentina pack, version 0.1.0; every code on it is read from the pack.

The Argentina 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 Argentina 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 AR
```

- One chart of accounts: Plan de cuentas de referencia sobre la estructura de los arts. 63 y 64 de la Ley General de Sociedades, 128 accounts.
- The books are kept in `es`.
- 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 AR \
  --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 AR --ref customer-1
ekwo doc new --contact "First Customer" --ref invoice-1 --line "name=Consulting,price=1000.00,account=411,tax=AR-S-21"
ekwo post invoice-1 --dry-run
ekwo post invoice-1
```

A line names its account and its tax by code, never by rate. `411` 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 |
|---|---|---|
| `AR-S-21` | Ventas y servicios al 21 % | 21 % |
| `AR-S-27` | Ventas y servicios al 27 % | 27 % |
| `AR-S-105` | Ventas y servicios al 10,5 % | 10.5 % |

## 5. With an AI agent

The MCP server lets an agent 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 agent must and must not do](https://ekwo.ai/docs/agents/).

## What the Argentina pack carries

- Charts of accounts: Plan de cuentas de referencia sobre la estructura de los arts. 63 y 64 de la Ley General de Sociedades (128).
- 10 taxes, at 0 %, 10.5 %, 21 %, 27 %.
- The Declaración jurada del Impuesto al Valor Agregado (`AR-IVA`), 20 boxes, filed month.
- Financial statements: Estado de situación patrimonial, Estado de resultados.

## What it does not do

- No library of this repository writes the file of the AR-IVA yet: the return is computed and frozen here, and typed on the administration’s portal.
- No library of this repository reads a `csv` 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/ar).