How to Build Your Own IRIS KashFlow
Replace IRIS KashFlow with a custom build. Accounting Software, Bookkeeping & Payroll Payments. Faster than everyone.
Build Difficulty: 4/5
A few focused days to build a solid replacement
Estimated Timeline
Based on 36 features at Few Days difficulty, expect about 3-5 days with AI-assisted development.
Recommended Tech Stack
Full-stack React framework with API routes and server components
PostgreSQL database, auth, and real-time subscriptions
Utility-first styling for rapid UI development
Key Features to Replicate
Top features across 8 categories. See all 36 features
Tax Compliance(5 features)
Support for Construction Industry Scheme compliance
VAT compliance feature for domestic reverse charge
Complete government-compliant digital tax system for UK tax compliance and submission
Tools and reports to support Self Assessment tax filing
Automatically update VAT and submit directly to HMRC, VAT compliant
Expense Management(4 features)
Manage and track business purchases and expenses
Track mileage for business expenses and tax deductions
Capture and store receipts digitally
Capture and store unlimited business receipts
Automation(3 features)
Send automatic notifications to customers about missing and late payments
Set up recurring invoices and purchase orders
Automatically schedule and send customer account statements
Banking(3 features)
Link bank accounts to automatically match bank statements with business accounts
Reconcile bank transactions with accounting records
Link and manage unlimited bank accounts
Invoicing(3 features)
Convert quotes to invoices with branded templates and automatic customer sending
Send unlimited quotes and invoices with customizable branding and logos
Create and send unlimited quotes to customers
Payments(3 features)
Payment processing solution integrated with KashFlow
Get paid faster with integrated KashFlow Payments and multiple payment methods
Include a pay now button on invoices to enable faster customer payments
Collaboration(2 features)
Share accounts directly with accountant for easy management
Allow multiple team members to access and manage accounts
Reporting(2 features)
Access to over 50 reports including profit & loss and stock control reports
Track business profitability with P&L reporting
Cost Calculator
Keep Paying IRIS KashFlow
Build It Yourself
Total Cost Comparison
DIY hosting estimate based on Vercel + Supabase free/pro tiers (~$20/mo). Build time estimated from 36 features at easy complexity.