Worldline vs. SumUp: Which card terminal is right for Swiss SMEs?

Worldline and SumUp represent two fundamentally different philosophies in the Swiss POS market: Worldline is the established market leader with an Interchange++ model and Swiss roots – SumUp is the global newcomer with a fixed pricing model and simple onboarding. For Swiss SMEs, the question arises: Which model suits your own business?

This guide compares Worldline and SumUp specifically for daily Swiss POS operations: fee structure, payment methods, TWINT availability, and onboarding effort – so you know which provider is the better choice and when.

1. Two Worlds: Interchange++ vs. Blended Pricing

The fundamental difference between Worldline and SumUp is not a product feature – it is the fee logic.

Worldline uses Interchange++: The fee per transaction is made up of the interchange fee of the card network (depending on card type and origin), the Worldline service fee, and any surcharges. What a transaction costs depends on which card your customer pulls out. A Swiss Maestro debit card costs less than a British Visa credit card.

SumUp uses Blended Pricing: A fixed rate applies to all debit cards (1.50% Standard, 0.99% Plus), another for all credit cards (2.50% Standard, 0.99% Plus). Non-EU cards and corporate cards cost 1.99% in the Plus subscription. No surcharges, no interchange component – what is written on the pricing page matches the monthly statement.

What this means for the monthly statement

With Worldline, the statement contains a list of transaction items with different fee rates depending on the card type and origin. For a business with a mixed customer base – Swiss debit cards, international credit cards, occasional corporate cards – the monthly fee is only known in hindsight.

With SumUp, the month can be calculated in advance: Anyone who knows what percentage of their turnover runs via debit and credit cards can calculate the fees in advance down to the cent.

2. Fee comparison: What a transaction costs

The following table shows effective costs for a EUR 30 receipt for typical scenarios (as of May 2026). Worldline values are estimates based on the public price sheet plus typical interchange guidelines:

* Worldline values are based on the public price sheet (from February 2026) plus typical interchange guidelines. Effective costs depend on the individual Comerciante contract.

Striking: SumUp Plus (EUR 29/month) beats Worldline significantly on credit cards – 0.99% vs. Interchange++ means a difference of around EUR 0.50–0.80 in favor of SumUp on a EUR 100 credit card transaction. For very small amounts and Swiss debit cards, Worldline can be cheaper due to the low interchange.

3. TWINT: The crucial Swiss difference

This is where paths clearly separate: Worldline supports TWINT at the POS terminal – with a minimum fee of EUR 0.15 per transaction according to the public price list. SumUp does not support TWINT.

For Swiss businesses with local clientele, this is not a detail. TWINT is the most widely used mobile payment method in Switzerland. A business without TWINT loses customers who would rather go to the competition than pay by card – regardless of how low the card fees are.

When TWINT is omitted without consequences

There are scenarios in which TWINT actually does not play a role: purely tourist businesses without a local Swiss customer base, international trade fairs and conferences with foreign visitors, or businesses in regions with very low TWINT adoption. For everyone else, the TWINT gap of SumUp is a structural problem.

4. Total monthly costs: Scenarios for Swiss SMEs

The following table shows three typical SME scenarios (as of May 2026). POS transactions, excluding online payments:

From around EUR 3'000 monthly card volume, SumUp Plus is almost always worth it compared to the standard rate. Worldline remains difficult to compare directly in this table – the Interchange++ model can be lower or higher than SumUp prices depending on the customer mix.

5. Payment methods in comparison

Beyond debit and credit cards, the two providers differ in other payment methods:

Worldline has a clear advantage here with Asian payment methods (Alipay, WeChat Pay) – relevant for businesses in tourist locations with Chinese clientele. SumUp, on the other hand, offers payment links as a digital payment tool, which is useful for small businesses without a full online shop integration.

6. Hardware: Rental vs. Purchase

SumUp sells its hardware one-off: The SumUp Air starts at EUR 49, the SumUp Solo from EUR 99. No monthly rental fee. For seasonal businesses or Comerciantes with very small volumes, this is financially attractive – the hardware amortizes quickly.

Worldline works with terminal rental or purchase, depending on the Comerciante contract. The terms are negotiated individually. A comparison is not possible without a concrete offer.

Important for the comparison: With SumUp, no monthly fixed fee is added to the card fee (Standard rate). If you make little turnover, you pay correspondingly little. This makes SumUp the cheapest entry for businesses with under EUR 2'000 monthly card turnover.

7. Onboarding: Negotiation vs. Self-registration

Worldline primarily targets larger Comerciantes. Onboarding goes through an individual quote – prices and conditions are negotiated. For a food truck or a small beauty salon, this process is often disproportionately complex.

SumUp allows self-registration without negotiation: Create account, buy hardware, activate terminal. For start-ups or seasonal businesses that want to get started quickly, this is a distinct advantage. The downside: Individual conditions for high volumes are only available from EUR 10'000 monthly turnover.

8. Overall decision: When which provider

For whom Worldline makes sense

Worldline remains the right choice if TWINT is indispensable and no alternative Swiss PSP is desired, if Alipay or WeChat Pay are relevant, or if a business has already invested in the Worldline ecosystem (tills, ERP). For very high volumes with predominantly Swiss debit cards, the Interchange++ model can also be cheaper than fixed blended rates.

For whom SumUp makes sense

SumUp is the most straightforward solution for Swiss SMEs without a TWINT requirement: transparent fixed prices, low-cost hardware purchase, instant onboarding. In particular, SumUp Plus (EUR 29/month) with 0.99% for all cards is hard to beat from EUR 3'000 monthly turnover – provided TWINT is not required.

Checklist: Worldline or SumUp – what suits my business?

• Do I need TWINT? (Yes → Worldline or Payrexx, not SumUp)

• How high is my monthly card turnover? (Under EUR 3'000 → consider SumUp Standard)

• How large is my share of credit cards? (High → SumUp Plus with 0.99% is attractive)

• Do I have an international customer base with non-EU cards? (Yes → compare SumUp Plus 1.99% vs. Worldline +1.30% surcharge)

• Do I have an Asian customer base (Alipay/WeChat)? (Yes → Worldline)

• Do I want to start quickly without negotiations? (Yes → SumUp)

• Do I need Online + POS from a single system? (Yes → neither SumUp nor Worldline is ideal)

• Do I have an existing Worldline cash register system? (Yes → check migration costs)

For Swiss SMEs that require TWINT, PostFinance Pay, transparent fixed prices, and online + POS from a single system, neither Worldline nor SumUp is the complete solution. Payrexx combines Blended Pricing (debit 0.95%+EUR 0.15, credit 1.25%+EUR 0.15, TWINT 1.25% flat) with online integration from the same account – all under the standard plan for EUR 19/month.