Worldline vs. SumUp: Which card terminal suits 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 flat-rate pricing model and simple onboarding. For Swiss SMEs, the question is: Which model fits your type of business?

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

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 (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: A flat rate applies to all debit cards (1.50% Standard, 0.99% Plus), another to all credit cards (2.50% Standard, 0.99% Plus). Non-EU cards and commercial cards cost 1.99% in the Plus plan. No surcharges, no interchange component – whatever is stated on the pricing page is exactly what you get on the monthly invoice.

What this means for the monthly invoice

With Worldline, the invoice 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 commercial cards – the monthly fee is only known after the event.

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

2. Fee Comparison: How much a transaction costs

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

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

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 for 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

Here the paths clearly diverge: Worldline supports TWINT at the POS terminal – with a minimum fee of EUR 0.15 per transaction according to the public price sheet. SumUp does not support TWINT.

For Swiss businesses with 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 would rather go to the competition than pay by card – regardless of how low the card fees are.

When TWINT can be omitted without consequences

There are scenarios in which TWINT actually does not matter: purely tourist businesses with no local Swiss clientele, international trade fairs and conferences with foreign visitors, or businesses in regions with very low TWINT adoption. For everyone else, SumUp's TWINT gap is a structural issue.

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 in monthly card sales, 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 lower or higher than SumUp's prices depending on the customer mix.

5. Payment methods compared

Beyond debit and credit cards, the two providers differ when it comes to other payment methods:

Worldline has a clear advantage here in terms of Asian payment methods (Alipay, WeChat Pay) – relevant for businesses in tourist locations with Chinese clientele. SumUp counteracts this by offering Payment Links as a digital payment tool, which is useful for small businesses without a full web shop integration.

6. Hardware: Rental vs. Purchase

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

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

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

7. Onboarding: Negotiation vs. Self-Registration

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

SumUp enables self-registration without negotiation: create an account, purchase hardware, activate terminal. For new start-ups or seasonal businesses that want to get going quickly, this is a distinct advantage. The flip side: individual conditions for high volumes are only available from EUR 10,000 in monthly sales.

8. Overall Decision: When to choose 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 volumes consisting predominantly of 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 with no TWINT requirement: transparent fixed prices, low-cost hardware purchase, immediate onboarding. SumUp Plus (EUR 29/month) with 0.99% for all cards is particularly hard to beat from EUR 3,000 in monthly sales – provided no TWINT is needed.

Checklist: Worldline or SumUp – which fits my business?

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

• How high are my monthly card sales? (Under EUR 3,000 → check SumUp Standard)

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