KashFlow Was Great.
In 2005.
KashFlow pioneered UK cloud accounting nearly 20 years ago. But the world has moved on. If you're starting fresh today, you deserve software built for 2024 - with AI that actually helps.
The Problem with Legacy Software
KashFlow has loyal users - and there's nothing wrong with sticking with what works. But if you're choosing software today, here's what you should know:
Nearly 20 Years Old
Built when MySpace was popular. The architecture and interface reflect 2005 web standards - functional but dated.
Corporate Ownership
Acquired by IRIS in 2013. Now part of an enterprise software portfolio - your needs aren't their priority.
No AI Innovation
Traditional software approach. Manual categorization, report generation, menu navigation. No AI assistance.
KashFlow
A veteran of UK cloud accounting. Works, but built for a different era.
- Interface designed in 2005
- Owned by IRIS (enterprise focus)
- No AI - everything is manual
- Loyal users, but aging fast
AccountsOS
AI-native accounting built specifically for UK Ltd company directors. Just ask what you need to know.
- "What's my corporation tax estimate?" - instant answer
- Voice input while driving - log expenses hands-free
- AI categorizes receipts - dump and forget
- Built in 2024 with modern tech
Legacy vs Modern Accounting
Software from 2005 and software from 2024 work very differently. Here's what that means for you:
Pricing Comparison
KashFlow offers competitive pricing, but you get 2005-era software. AccountsOS gives you AI-native accounting at a similar price point.
KashFlow Starter
£8/month
- Basic invoicing only
- No bank feeds
- Limited features
KashFlow Business
£18/month
- Bank feeds included
- Still limited reporting
- Dated interface
KashFlow Business + Payroll
£27/month
- Payroll included
- No AI features
- Legacy software experience
AccountsOS
£19/month
- Everything included
- AI features standard
- Modern 2024 interface
Similar price. Very different experience.
KashFlow's Business tier is £18/month. AccountsOS is free during Early Access (then £9/month) with AI features and a modern interface built for today.
Feature Comparison
What you get from legacy vs modern accounting software.
| Feature | AccountsOS | KashFlow |
|---|---|---|
Ask questions in plain English "How much did I spend on software this quarter?" vs running reports | ||
Voice input while driving Log expenses hands-free: "£45 client lunch at The Ivy" | ||
AI auto-categorization Drop receipts and forget - AI handles the rest | ||
Proactive tax optimization Get alerts about claimable expenses and optimal salary/dividend splits | ||
Modern interface AccountsOS built in 2024 vs KashFlow's 2005-era design | ||
Setup time KashFlow requires more manual configuration | 5 minutes | 30-60 minutes |
UK Ltd director-specific AccountsOS built specifically for your exact situation | Partial | |
Director salary/dividend optimization Know exactly how to pay yourself tax-efficiently | ||
Bank reconciliation Both connect to UK banks | ||
Invoice creation Both handle invoicing | ||
MTD compliance Both support Making Tax Digital | ||
Independent development AccountsOS is founder-led. KashFlow is owned by IRIS (enterprise focus) |
Respect for KashFlow Users
KashFlow pioneered UK cloud accounting and has served thousands of businesses well for nearly two decades. If you're a happy KashFlow user with established workflows, there's no shame in sticking with what works.
But if you're choosing accounting software for the first time, or ready for something built for how you work today - with AI assistance, voice input, and a modern interface - AccountsOS is worth a look.
Frequently Asked Questions
Is KashFlow still being actively developed?
KashFlow was acquired by IRIS (a large enterprise software company) in 2013. While it still receives updates for compliance, the core product and interface haven't evolved significantly. IRIS's focus is increasingly on enterprise solutions. AccountsOS is actively developed with new AI features shipping regularly.
Why does KashFlow's interface feel dated?
KashFlow launched in 2005, making it nearly 20 years old. While functional, the interface reflects the web design standards of that era - lots of menus, separate screens for everything, and a desktop-first approach. AccountsOS was built in 2024 with AI-native design, voice input, and mobile-first thinking.
Does KashFlow have any AI features?
No. KashFlow is traditional accounting software - you manually categorize transactions, generate reports, and navigate menus. AccountsOS was built AI-native from day one. You chat with your books in plain English, use voice commands, and get proactive tax optimization suggestions automatically.
Can I switch from KashFlow to AccountsOS?
Yes. Export your transactions from KashFlow as CSV, upload to AccountsOS, and you're running in minutes. Our AI helps categorize everything and learns your patterns. Most directors find the transition surprisingly easy.
What happened when IRIS bought KashFlow?
IRIS acquired KashFlow in 2013 to add a cloud offering to their enterprise software portfolio. While existing users have been supported, development focus has shifted toward IRIS's enterprise priorities. Solo founders are no longer the primary audience. AccountsOS is built specifically for UK Ltd directors.
When would KashFlow make sense?
KashFlow can work well if you're already familiar with it and have established workflows. Long-time users who don't need AI features may prefer to stick with what they know. But for new users starting fresh, a modern AI-native solution like AccountsOS will serve you better from day one.
Ready for Modern Accounting?
Software has evolved. Your accounting should too. Stop navigating menus - just ask what you need to know.
AI-native accounting built for UK Ltd directors.
Get Started Free - No Credit CardFree during Early Access. £9/month when paid plans launch for early adopters.