IRIS KashFlow Accounting Software Review
In a nutshell
KashFlow, now part of the IRIS Software Group since 2013, takes a no-nonsense approach to UK bookkeeping. Originally launched in 2005, it has evolved into a comprehensive cloud-based solution that handles the essentials well. The interface may not win design awards, but it is functional and gets the job done. MTD VAT filing is straightforward with good guidance for first-time users. Payroll integration is a genuine strength here, connecting seamlessly with IRIS Payroll for real-time employee compliance. UK support is genuinely UK-based, which matters when dealing with HMRC-specific questions. Plans start from around £10.50/month for the basic tier, making it one of the more affordable options on the market.
Pros
- Affordable entry-level pricing starting from £10.50/month
- Full MTD VAT compliance with direct HMRC submissions
- Strong payroll integration with IRIS Payroll
- CIS support for construction industry including reverse charge VAT
- Open Banking connections with major UK banks
- Multi-currency support and customisable invoicing
- Part of established IRIS ecosystem with 45+ years in UK market
Cons
- Interface feels dated and navigation can be clunky
- Fewer third-party integrations than market leaders
- Steep learning curve - knowledge base is extensive but takes time to absorb
- Mixed reviews on customer support responsiveness
- Trustpilot rating lower than competitors (1.5 stars based on 110+ reviews)
- Some users report invoicing capability limitations
KashFlow (now part of IRIS) takes a no-nonsense approach to UK bookkeeping. The interface won’t win design awards, but it’s functional and gets the job done. MTD VAT filing is straightforward with good guidance for first-time users.
Payroll integration is a strength here, particularly valuable if you have employees. UK support is genuinely UK-based, which matters when you’re dealing with HMRC-specific questions.
Best for: Traditional UK SMEs, businesses with payroll needs, those preferring function over form
Limitations: Interface feels dated; fewer third-party integrations than market leaders