Payment Processors · reliability comparison
Authorize.net vs SumUp: which is more reliable? (2026)
SumUp is more reliable than Authorize.net, scoring 54.2 vs 39.3 out of 100. Over the last 90 days Authorize.net reported 8 incidents and SumUp reported 5, with effective uptime of 97.93% and 98.98% respectively. SumUp resolves incidents faster on average (19h 59m).
Data updated Nov 1, 2026 · How we score
| Metric | Authorize.net | SumUp |
|---|---|---|
| Reliability score | 39.3 | 54.2 |
| Rank (payment processors) | #11 | #7 |
| Uptime (90 days) | 97.93% | 98.98% |
| Incidents (90 days) | 8 | 5 |
| Partial / major outages | 4 | 1 |
| Avg time to resolve | 1d | 19h 59m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Authorize.net and SumUp differ
- Authorize.net reported 60% more incidents than SumUp over the last 90 days (8 vs 5).
- Authorize.net had 4 partial or major outages, compared with 1 for SumUp.
- SumUp fixes problems faster: 19h 59m on average, against 1d for Authorize.net.
- Authorize.net's longest outage on record lasted 3d (Jul 1, 2026); SumUp's lasted 3h 2m (Jun 27, 2026).
90-day uptime
Authorize.net
SumUp
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Authorize.net incidents
- InformationalSep 13, 2026 · resolved in <1m
CreateTransaction API calls Failing
Affected: Authorize.net API
- Partial outageSep 7, 2026 · resolved in 22h 23m
API Connection/Endpoint Service Disruption
Affected: Authorize.net API
- Degraded performanceSep 2, 2026 · resolved in 2h 29m
Customer Invoicing Service Disruption
Affected: Customer Invoicing
- Degraded performanceAug 20, 2026 · resolved in 1d 5h
API Connection/Endpoint - Server Integration Method (SIM) Relay Response Issue
Affected: Server Integration Method (SIM)
- Partial outageAug 14, 2026 · resolved in 7h 56m
API Connection/Endpoint Service Disruption
Affected: Accept Suite
- Partial outageAug 13, 2026 · resolved in 1d 1h
NAB EPX Processing Service Disruption
Affected: NAB EPX
Recent SumUp incidents
- Degraded performanceOct 29, 2026 · ongoing
- 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: Solo, Card Readers: Air & 3G, Card Readers: Top & Top NFC, Logins, Tap to Pay on Android, Solo Cloud API +7 more
- MaintenanceAug 15, 2026 · ongoing
Transactions processing delay in UK
Affected: Business Account (EU)