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 fits your own business?

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

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 consists of the interchange fee of the card network (dependent on card type and origin), the Worldline service fee, and any surcharges. How much 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: One 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 commercial cards cost 1.99% in the Plus subscription. No surcharges, no interchange component – what is written on the pricing page matches your 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 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 after the fact.

With SumUp, the month is predictable in advance: If you know what percentage of your turnover runs via debit and credit cards, you can calculate the fees in advance down to the exact Swiss franc.

2. Fee Comparison: How much a transaction costs

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

* Worldline values are based on the public price sheet (as of February 2026) plus typical interchange benchmark values. Effective costs depend on the individual merchant contract.

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

3. TWINT: The crucial Swiss difference

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

For Swiss businesses with a local clientele, this is not a minor detail. TWINT is the most widely used mobile payment method in Switzerland. A business without TWINT loses customers who prefer to go to the competition rather 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 plays no role: purely tourist businesses without Swiss regular clientele, international trade fairs and conferences with foreign visitors, or businesses in regions with very low TWINT adoption. For all others, SumUp's TWINT gap 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 CHF 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 turn out to be lower or higher than SumUp pricing 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 customers. SumUp offers payment links as a digital payment tool instead, which is useful for small businesses without a full webshop integration.

6. Hardware: Rental vs. Purchase

SumUp sells its hardware one-offs: the SumUp Air starts at CHF 49, the SumUp Solo at CHF 99. No monthly rental fee. For seasonal businesses or merchants with a very small volume, this is financially attractive – the hardware amortises quickly.

Worldline works with terminal rental or purchase, depending on the merchant contract. The conditions are negotiated individually. A comparison is not possible without a specific quote.

Important for comparison: With SumUp (standard rate), no monthly fixed fee is added to the card fee. If you generate low turnover, you pay correspondingly little. This makes SumUp the cheapest entry point for businesses with less than CHF 2'000 in monthly card turnover.

7. Onboarding: Negotiation vs. Self-Registration

Worldline primarily targets larger merchants. Onboarding takes place via an individual quote – prices and terms are negotiated. For a food truck or a small beauty salon, this process is often disproportionately complex.

SumUp allows self-registration without negotiation: create an account, buy hardware, activate terminal. For start-ups or seasonal businesses that want to get going quickly, this is a real advantage. The downside: Individual terms for high volumes are only available from CHF 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 (registers, ERP). For very high volume with primarily Swiss debit cards, the Interchange++ model can also be cheaper than fixed blended rates.

For whom SumUp makes sense

SumUp is the most uncomplicated solution for Swiss SMEs without TWINT needs: transparent fixed pricing, cheap hardware purchase, immediate onboarding. Especially SumUp Plus (CHF 29/month) with 0.99% for all cards is hard to beat from CHF 3'000 monthly turnover – as long as you do not need TWINT.

Checklist: Worldline or SumUp – what fits my business?

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

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

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

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

• Do I have Asian customers (Alipay/WeChat)? (Yes → Worldline)

• Do I want to get started quickly without negotiation? (Yes → SumUp)

• Do I need online + POS from one system? (Yes → neither SumUp nor Worldline is ideal)

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

For Swiss SMEs looking for TWINT, PostFinance Pay, transparent fixed rates and online + POS from one system, neither Worldline nor SumUp is the complete solution. Payrexx combines blended pricing (debit 0.95%+CHF 0.15, credit 1.25%+CHF 0.15, TWINT 1.25% flat) with online integration from the same account – all under the Standard plan for CHF 19/month.