Payment Processors · reliability comparison
Adyen vs SumUp: which is more reliable? (2026)
Adyen is more reliable than SumUp, scoring 84.8 vs 54.2 out of 100. Over the last 90 days Adyen reported 10 incidents and SumUp reported 5, with effective uptime of 99.95% and 98.98% respectively. Adyen resolves incidents faster on average (7h 14m).
Data updated Nov 2, 2026 · How we score
| Metric | Adyen | SumUp |
|---|---|---|
| Reliability score | 84.8 | 54.2 |
| Rank (payment processors) | #6 | #9 |
| Uptime (90 days) | 99.95% | 98.98% |
| Incidents (90 days) | 10 | 5 |
| Partial / major outages | 0 | 1 |
| Avg time to resolve | 7h 14m | 19h 59m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Adyen and SumUp differ
- Adyen reported 2× as many incidents as SumUp over the last 90 days (10 vs 5).
- SumUp had 1 partial or major outage, compared with 0 for Adyen.
- Adyen fixes problems faster: 7h 14m on average, against 19h 59m for SumUp (2.8× quicker).
- Adyen's longest incident on record lasted 3d (Jul 31, 2026); SumUp's lasted 3h 2m (Jun 27, 2026).
90-day uptime
Adyen
SumUp
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Adyen incidents
- InformationalNov 1, 2026 · resolved in 3h 38m
Givex is experiencing higher error rates
Affected: Acquirer payments performance
- InformationalOct 31, 2026 · resolved in 15h 34m
Givex is experiencing higher error rates
Affected: Acquirer payments performance
- InformationalOct 31, 2026 · resolved in 36m
MoMo is experiencing higher error rates
Affected: Acquirer payments performance
- InformationalOct 31, 2026 · resolved in 3h 58m
AntFinancialOSP is experiencing offer conversion issues
Affected: Acquirer payments performance
- InformationalSep 30, 2026 · resolved in 2d 5h
Payout delay for a subset of BRL transactions
Affected: Settlement payout
- InformationalSep 30, 2026 · resolved in 12m
MB WAY is experiencing higher refusal rates
Affected: Acquirer payments performance
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: Card Readers: Top & Top NFC, Logins, Refunds, Card Readers, Online Payments, Payouts +7 more
- MaintenanceAug 15, 2026 · ongoing
Transactions processing delay in UK
Affected: Business Account (EU)