Payment Processors · reliability comparison
Shift4 Payments vs SumUp: which is more reliable? (2026)
Shift4 Payments is more reliable than SumUp, scoring 57.8 vs 54.2 out of 100. Over the last 90 days Shift4 Payments reported 5 incidents and SumUp reported 5, with effective uptime of 99.36% and 98.98% respectively. Shift4 Payments resolves incidents faster on average (19h 29m).
Data updated Nov 2, 2026 · How we score
| Metric | Shift4 Payments | SumUp |
|---|---|---|
| Reliability score | 57.8 | 54.2 |
| Rank (payment processors) | #8 | #9 |
| Uptime (90 days) | 99.36% | 98.98% |
| Incidents (90 days) | 5 | 5 |
| Partial / major outages | 2 | 1 |
| Avg time to resolve | 19h 29m | 19h 59m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Shift4 Payments and SumUp differ
- Shift4 Payments had 2 partial or major outages, compared with 1 for SumUp.
- Shift4 Payments fixes problems faster: 19h 29m on average, against 19h 59m for SumUp.
- Shift4 Payments's longest outage on record lasted 3h 24m (Aug 24, 2026); SumUp's lasted 3h 2m (Jun 27, 2026).
90-day uptime
Shift4 Payments
SumUp
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Shift4 Payments incidents
- Degraded performanceOct 22, 2026 · resolved in 7d 4h
Affected: Merchant Funding USA, Card Processing
- Degraded performanceOct 22, 2026 · resolved in 1h 29m
Timeouts for US processing 10/22/26
Affected: TSYS, Shift4 Dine POS - US, eCommerce, Shift4 One, Shift4 Venue Payments (US)
- InformationalSep 11, 2026 · resolved in 53m
Affected: Shift4 Dine POS - US, Shift4 Dine POS - Canada, Shift4 Dine POS - UK/EU, Shift4 Dine Mobile, Shift4 Dine Online Ordering, Shift4 Dine Kiosk
- Major outageSep 10, 2026 · resolved in 1h 1m
Eigen Processing Disruptionofficial update ↗
Affected: Eigen Gateway
- Partial outageAug 24, 2026 · resolved in 3h 24m
Partial Funding Delay - 8-24-2026official update ↗
Affected: Merchant Funding USA
Recent SumUp incidents
- Degraded performanceOct 29, 2026 · ongoing
Keyboard not showing during PIN entry
Affected: Business Account (EU)
- MaintenanceOct 9, 2026 · ongoing
SEPA instant payments will be delayed due to a scheduled maintenance
Affected: Business Account (EU)
- Degraded performanceSep 5, 2026 · resolved in 7h 6m
Multi-Device-Sync and Kitchen Display System (KDS) are not receiving orders
Affected: Kitchen Display System (KDS), Ordering & Floor Plan
- Degraded performanceSep 3, 2026 · resolved in 6d 2h
Touchscreen not responding on POS devices
Affected: SumUp POS, POS Pro
- Degraded performanceAug 17, 2026 · resolved in 10m
Issue with Logins and Payments Acceptance
Affected: Payment Links, Card Readers: Solo, Card Readers: Top & Top NFC, Logins, Card Readers: Total, On & Super, Refunds +7 more
- MaintenanceAug 15, 2026 · ongoing
Transactions processing delay in UK
Affected: Business Account (EU)