Anyone wishing to accept card payments at a Swiss weekly market or in a farm shop needs a mobile terminal that works without a fixed power connection, supports TWINT and debit cards, and is still profitable for low average transaction values from EUR 8–15. The choice ranges from cheap Bluetooth card readers with no monthly costs to independent 4G terminals with active receipt printers and TWINT integration. The decisive factor is not the device costs, but the transaction fees – because these occur on every market day.

This guide compares the most important providers and device types for direct marketing in Switzerland, calculates the actual costs per market day, and shows what you need to pay attention to regarding battery, network, and weather.

1. When a mobile card terminal is worthwhile at the weekly market or farm shop

Not every market stall needs a card terminal. If you exclusively serve regular customers who all have TWINT, a QR sticker is sufficient. But as soon as one of the following scenarios applies, a physical terminal is worthwhile:

Firstly: Tourists and passers-by who do not have TWINT but want to pay with Visa or Mastercard. Especially at weekly markets in tourist regions (Zurich, Lucerne, Interlaken, Montreux), card payment is indispensable. Secondly: Higher amounts from EUR 30–50, for example with meat, cheese, or large flower bouquets, where cash becomes impractical. Thirdly: If you need receipts – for example for business customers, restaurants, or resellers. And fourthly: If you also run a farm shop alongside the weekly market and have a fixed checkout situation there.

For pure self-service farm shops without staff, a QR code with a payment page is the better choice, because no one operates the terminal. However, as soon as you personally stand at the stall, a terminal is the more professional and faster solution.

2. Which card types your customers use at the weekly market and farm shop

In Switzerland, the card landscape has changed significantly in recent years. The most important development: Maestro has practically disappeared. Swiss banks have switched their debit cards to Visa Debit and Debit Mastercard. For market traders, this means: You need a terminal that accepts Visa and Mastercard – this covers both debit and credit cards.

The most common payment methods at Swiss market stalls

Visa Debit and Debit Mastercard are by far the most common cards. They have replaced Maestro and the old PostFinance Card (V Pay). In addition, there are credit cards (Visa, Mastercard, rarely AMEX), contactless Mobile Wallets (Apple Pay, Google Pay, Samsung Pay – processed through the terminal like a card payment), TWINT (via the terminal or in parallel via QR sticker), and of course still cash. A modern terminal accepts all of these payment methods via a single contactless interface (NFC): hold up the card, hold up the smartphone, done.

3. Device types at a glance: Stationary, mobile, with and without receipt

Three categories of devices are relevant on the market. Each has its own area of application.

Bluetooth card readers (smartphone-coupled)

Example: SumUp Air. A small, inexpensive device (from approx. EUR 39) that is connected to your smartphone via Bluetooth. The transaction runs via the app on the mobile phone, the card reader is only the input device. Advantage: very cheap, no subscription. Disadvantage: You always need to have your smartphone with you, no separate screen, no receipt printer, no TWINT acceptance on the device.

Independent mobile terminal (4G/Wi-Fi)

Examples: SumUp Solo, Payrexx Nexgo N86, Worldline Axium EX4000. These devices have their own screen, a built-in SIM card (4G), and function independently of the smartphone. Some models have an integrated receipt printer. Advantage: professional, fast, independent. Disadvantage: higher acquisition costs or rental fee.

All-in-one terminal (Android-based)

Example: Payrexx Nexgo N6. Android-based devices with a large touchscreen, receipt printer, and the possibility to install additional apps (e.g. POS system, inventory management). Advantage: Combines terminal, checkout, and printer in one device. Disadvantage: Larger and heavier than a pure card reader, higher price.

4. Comparison of providers: Payrexx, SumUp, Worldline and Co.

The following table compares the most important providers for mobile card terminals in Switzerland – with a focus on the needs of market traders and farm shops.

The table shows: SumUp is the cheapest entry-level solution with no fixed costs – but is only suitable if you do not need TWINT on the terminal and your card turnover is below EUR 3,000 per month. As soon as TWINT on the terminal is important or turnover increases, the transaction fees from SumUp (1.5–2.5 %) become more expensive than the combination of a Payrexx subscription and lower fees (0.95–1.25 %). Worldline and Nexi offer the lowest negotiable fees, but require contract commitment and individual offers.

5. Costs per transaction: What is actually charged for small amounts

Direct marketing often involves small amounts: EUR 6 for eggs, EUR 12 for honey, EUR 15 for vegetables. With such amounts, the fixed fees per transaction carry more weight than the percentage. Let's look at a concrete example.

Cost calculation: 12 market days per month, 80 transactions per day

Assumption: Average transaction value EUR 18, of which 60 % debit card, 30 % TWINT, 10 % credit card. This results in 960 transactions and EUR 17,280 card turnover per month.

The calculation shows: SumUp appears cheaper at first glance, but does not offer TWINT on the terminal. If 30 % of your customers want to pay via TWINT, you lose these sales – or you need a TWINT QR sticker in parallel. With Payrexx, everything is integrated into one device. Worldline is negotiable for high volume and long contract terms, but is only worthwhile with significantly higher sales.

Important: The fixed fee per transaction (e.g. EUR 0.15 with Payrexx) carries weight for small amounts. For a carton of eggs for EUR 6, the fixed fee alone makes up 2.5 % – plus the percentage. With EUR 50 for cheese, the fixed fee is only 0.3 %. Farm shops with many small amounts should check whether a pure QR solution (e.g. Payrexx QR Pay: 1.25 % + EUR 0.00) is more sensible for the cheapest items.

6. Battery, 4G, and weather: Practical requirements at the weekly market

Battery life

A market day typically lasts 6–10 hours. Most modern terminals manage 300–500 transactions per battery charge – this is enough for a full market day. According to manufacturer specifications, the Nexgo N86 lasts for over 500 transactions. The SumUp Solo manages around 100 contactless transactions in a row. Tip: Fully charge the device the night before and take a power bank with you if in doubt.

Mobile network connection (4G)

Terminals with a built-in SIM card (4G) are ideal for weekly markets because they do not need Wi-Fi. The connection runs via the mobile network. On most Swiss weekly markets in towns, 4G coverage is good. It can be problematic on mountain markets, alpine events, or very remote farm shops. In these cases, only terminals with offline capability or a TWINT QR sticker (which uses the customer's mobile network) work. Bluetooth card readers like the SumUp Air use the smartphone's mobile network – this can be doubly problematic if reception is poor (mobile phone + terminal).

Weather and robustness

It sometimes rains at the weekly market. No standard card terminal is waterproof – so you need a protected place under the stall roof. Ensure you have a stable, elevated shelf for the device so that it does not fall into water or get wet. In cold winter conditions, battery life can drop significantly (up to 30 % less in sub-zero temperatures). In summer, direct sunlight can make the screen unreadable – place the device in the shade.

7. TWINT at the terminal: How to accept TWINT via the card reader

TWINT is by far the most popular mobile payment method in Switzerland. At weekly markets and in farm shops, it has already overtaken cash in many cases. There are two ways to accept TWINT at the market stall:

TWINT at the card terminal (integrated)

Some providers – including Payrexx, Worldline, and Nexi – integrate TWINT directly into the card terminal. Customers hold their smartphone to the terminal or scan a QR code displayed on the screen. The transaction runs through the same settlement process as a card payment. Advantage: One device, one billing system, one Dashboard. With Payrexx, TWINT at the POS terminal costs 1.25 % + EUR 0.00 per transaction.

TWINT via QR sticker (parallel to the terminal)

Anyone using a terminal without TWINT integration (e.g. SumUp) can parallelly hang up a TWINT QR sticker at the stall. TWINT payments then run separately via the TWINT channel, card payments via the terminal. Disadvantage: Two separate systems, two separate settlements, more effort in bookkeeping. If TWINT makes up a significant part of your transactions (30–50 % at many Swiss market stalls), an integrated solution is simpler in the long term.

8. Checklist: The right card terminal for your weekly market or farm shop

• Clarify whether you need TWINT on the terminal. If yes, SumUp and other pure card readers are excluded.

• Calculate your transaction volume: How many transactions per market day, what average transaction value? Only then can the actual monthly costs be compared.

• Choose a 4G-enabled terminal if you do not have reliable Wi-Fi access at the market stall.

• Check the battery life: Is one charge sufficient for your market day (6–10 hours, 50–100 transactions)?

• Receipt printer yes or no? Business customers and resellers often expect a receipt.

• Check contract terms: For seasonal market traders (e.g. only April–October), a model without contract commitment is better.

• Store the device protected from the weather: Splash water protection does not exist – place the terminal under the stall roof, on an elevated shelf.

• TWINT QR sticker as an addition: Even with a terminal, an additional QR sticker is worthwhile for customers who want to pay directly via the TWINT app.

• Prepare bookkeeping: Set up a transit account for card payments and enter gross sales and fees separately.

• Test: Put the terminal into operation on a market day and check reception, battery, and speed under real conditions.

If you are looking for a terminal with integrated TWINT acceptance and no contract commitment, Payrexx offers the Nexgo terminals N6 and N86 for rent – currently, both devices are available free of charge, as long as stocks last. The POS fees are at 0.95 % + EUR 0.15 for debit cards, 1.25 % + EUR 0.15 for credit cards, and 1.25 % + EUR 0.00 for TWINT.

The terminal assumes a Standard or Premium plan (from EUR 19/month). All payments – card, TWINT, online sales – run through one Dashboard and are paid out in bundles to your bank account.