Accounting Software · 2026 reliability ranking

Most Reliable Small Business Accounting Software (2026)

Q: What is the most reliable accounting software?

Based on the last 90 days of data, Oracle NetSuite is the most reliable accounting software we track, with a reliability score of 95.8/100 and 99.97% uptime.

Q: How do you measure accounting software reliability?

We poll each vendor's public status page every few minutes, record every incident, and run our own uptime checks against each vendor's login and customer-facing pages. Uptime (40%), incident frequency (20%), average time to resolve (20%) and transparency (20%) combine into one score out of 100.

Q: How often are these rankings updated?

Continuously. Status pages and uptime checks run every five minutes and scores are recalculated several times an hour.

Q: Can vendors pay to rank higher?

No. Sponsored placements are clearly labelled, shown separately from the rankings and never change a vendor's score.

We ranked 12 accounting software tools by real-world reliability over the last 90 days, using 51 status page incidents and our own around-the-clock uptime checks. Small businesses use cloud accounting software to send invoices, take card payments on them, reconcile bank feeds, run payroll add-ons and file sales tax or VAT returns. When the service is down or bank feeds stall, invoices go out late, payments are not recorded, and a tax filing near its deadline can be missed, which can mean penalties. Accountants and bookkeepers who work across many client files lose billable time with every outage, so a vendor's service history matters when choosing where to keep the books.

Last updated Nov 1, 2026 · How we score

Most reliable accounting software: Oracle NetSuite (score 95.8/100). Highest uptime: Oracle NetSuite (99.97%). Fewest incidents: Oracle NetSuite (1 in 90 days). Fastest to resolve: Oracle NetSuite (avg 1h 3m).

#	Vendor	Score	Uptime (90d)	Incidents	Avg resolve	Transparency	Status now
1	Oracle NetSuiteOracle NetSuite is a cloud ERP and financial management suite from Oracle Corporation aimed at growing and mid-sized businesses.	95.8	99.97%	1 (1 major)	1h 3m	100/100	Operational
2	WaveWave is a Toronto-based provider of accounting, invoicing and payments software for small businesses, owned by H&R Block.	91.1	99.93%	5 (1 major)	1h 41m	100/100	Operational
3	QuickBooks OnlineQuickBooks Online is the cloud accounting software from Intuit Inc. of Mountain View, California.	87.8	99.89%	5 (2 major)	2h 14m	100/100	Operational
4	FreshBooksFreshBooks is a Toronto-based cloud accounting and invoicing software company for small businesses and freelancers.	74.6	99.74%	4	12h 3m	100/100	Operational
5	XeroXero is a Wellington, New Zealand-founded cloud accounting platform for small businesses and their advisors.	48.6	98.61%	27 (11 major)	5h	100/100	Operational
6	PandlePandle is a UK cloud bookkeeping and accounting software for small businesses and sole traders, owned by Iris Software Group.	40.2	97.60%	2 (2 major)	1d 1h	100/100	Operational
7	Sage AccountingSage Accounting (formerly Sage Business Cloud Accounting and Sage One) is the cloud small business accounting product of The Sage Group plc of Newcastle, UK.	30.4	93.81%	7 (2 major)	1d 6h	100/100	Partial outage

Accounting Software reliability at a glance

Across the 7 ranked accounting software tools, average 90-day uptime is 98.51%. Reliability scores range from 95.8 (Oracle NetSuite) to 30.4 (Sage Accounting).
Together they published 51 incidents in the last 90 days, 19 of them partial or major outages.
The typical vendor takes 5h to resolve an incident. Oracle NetSuite is fastest, at 1h 3m on average.
Xero reported the most incidents (27 in 90 days).

What to check before you choose a accounting software

Outages here rarely stop trading, but bank feed and invoice payment failures delay getting paid.
Check reliability around month end and tax deadlines, when you can least afford downtime.
Bank feed delays usually start with a third party. Look for vendors that report them openly.
Make sure you can export your data, so a long outage doesn't block payroll or tax filing.

90-day uptime history

Each bar is one day. Hover a bar for that day's uptime and incidents.

1. Oracle NetSuite

99.97% uptime · 1 incidents · avg resolve 1h 3m

90 days ago99.975% average daily uptimeToday

2. Wave

99.93% uptime · 5 incidents · avg resolve 1h 41m

90 days ago99.938% average daily uptimeToday

3. QuickBooks Online

99.89% uptime · 5 incidents · avg resolve 2h 14m

90 days ago99.898% average daily uptimeToday

4. FreshBooks

99.74% uptime · 4 incidents · avg resolve 12h 3m

90 days ago99.748% average daily uptimeToday

5. Xero

98.61% uptime · 27 incidents · avg resolve 5h

90 days ago98.617% average daily uptimeToday

6. Pandle

97.60% uptime · 2 incidents · avg resolve 1d 1h

90 days ago97.600% average daily uptimeToday

7. Sage Accounting

93.81% uptime · 7 incidents · avg resolve 1d 6h

90 days ago93.936% average daily uptimeToday

No incidents
Degraded
Partial outage
Major outage
No data

Being tracked (not ranked yet)

These vendors join the ranking once we have enough evidence: at least 14 days of data, and for vendors with a quiet status page (silent for a year, or for 90 days while their competitors report several incidents), 30 days of our own independent monitoring.

FreeAgent · quiet status page, awaiting our own monitoring
Patriot Accounting · quiet status page, awaiting our own monitoring
Zoho Books · quiet status page, awaiting our own monitoring
MYOB
Odoo Accounting · no public status page

Recent Accounting Software incidents

Degraded performanceFreshBooksOct 30, 2026 · resolved in 14h 9m
FreshBooks - Investigating iOS Login Issue
Affected: iOS App
Major outageXeroOct 28, 2026 · resolved in 1h 1m
Global: Xero - customers are experiencing issues across Xero
Affected: Xero Platform and Settings
Degraded performanceXeroOct 26, 2026 · resolved in 2h 24m
Global: Xero - some customers may be experiencing intermittent errors in Xero.
Affected: Xero Platform and Settings
Degraded performanceSage AccountingOct 23, 2026 · ongoing
Sage Business Cloud Accounting (UKI) - Partial Outage
Affected: Sage Business Cloud Accounting (UKI)
Degraded performanceSage AccountingOct 22, 2026 · resolved in <1m
Sage Business Cloud Accounting (UKI) - Operational
Affected: Sage Business Cloud Accounting (UKI)
Partial outageOracle NetSuiteOct 21, 2026 · resolved in 1h 3m
NetSuite Email | Multiple Regions
Affected: US San Jose 1, US San Jose 2, EU Amsterdam 1, EU Frankfurt 1, UK London, UK Newport +17 more
Degraded performanceFreshBooksOct 20, 2026 · resolved in 19h 50m
FreshBooks - Component not working
Affected: FreshBooks
Major outagePandleOct 20, 2026 · resolved in 6h 56m
Pandle affected by Google Cloud networking issue
Affected: Web App (my.pandle.co.uk), Mobile App (Android & iOS), Bank Feeds, Email Delivery, API (Private Beta), Website +1 more

Head-to-head comparisons

All Accounting Software comparisons →

Related rankings

All payments & finance rankings →

Frequently asked questions

What is the most reliable accounting software?

Based on the last 90 days of data, Oracle NetSuite is the most reliable accounting software we track, with a reliability score of 95.8/100 and 99.97% uptime.

How do you measure accounting software reliability?

We poll each vendor's public status page every few minutes, record every incident, and run our own uptime checks against each vendor's login and customer-facing pages. Uptime (40%), incident frequency (20%), average time to resolve (20%) and transparency (20%) combine into one score out of 100.

How often are these rankings updated?

Continuously. Status pages and uptime checks run every five minutes and scores are recalculated several times an hour.

Can vendors pay to rank higher?

No. Sponsored placements are clearly labelled, shown separately from the rankings and never change a vendor's score.