---
title: "Cash book for market traders: sales and costs offline"
description: "Keep your stall's books on your phone, even with no signal: sales, costs, the result of each market, monthly reports and CSV export."
url: https://www.mercader.app/en/productos/caja
language: en
---

# Know what each market leaves you

> Open the market when you set up, log every sale and cost even with no signal and, when you pack up, see what you really made.

## What it does

- **Works with no signal.** Everything is saved on your phone instantly and sent when you're back online. Install it on your home screen like an app.
- **Every market, with its result.** When you close a market you see sales, costs, net, average sale, takings by payment method and best sellers.
- **However you take payment.** Cash, card or bank transfer: log what you take with your usual card reader, no need to switch.
- **Reports and CSV.** Income, costs, profit and margin by week, month or quarter, broken down by category, plus a CSV for your accountant.

## How it works

1. Open the market when you arrive, or pick it from your upcoming events.
2. Log sales and costs in two taps, with or without products from your catalogue.
3. Close it when you pack up and see the day's result.

## Which plans include it

The cash book is included in every plan and in the trial.

14-day trial, no card needed. Then a subscription with no commission on sales.

- Use my email: https://app.mercader.app/auth?mode=signup&utm_source=mercader-web&utm_medium=product_caja&utm_campaign=llms

## Frequently asked questions

### Do I need a new card reader?

No. The cash book doesn't take payments: it logs what you take with any method to give you the fair's result.

### What if there's no signal at the venue?

Keep logging as usual. Entries stay on your phone and are sent once there's internet.

### Can I use it for my tax return?

It gives you totals and a CSV with every entry for your accountant or spreadsheet. It doesn't replace invoicing software.

## The rest of your market day

- [Market finder](https://www.mercader.app/en/productos/buscador-de-mercados.md): Markets and fairs near you for the month you choose, with dates, source and the organiser's contact.
- [Storefront](https://www.mercader.app/en/productos/escaparate.md): Let people who stopped by your stall see your catalogue and message you on WhatsApp, with no commission.