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IRIS KashFlow – What You Need to Know

An in-depth look at IRIS KashFlow — features, strengths, limitations, and who it's best for.

01

At a Glance

Key facts about IRIS KashFlow at a glance.

FeatureIRIS KashFlow
Software typeGeneral Small Business Accounting Software
Target usersSole Traders, Contractors, SMEs, Limited Companies
Income Sources SupportedSole Trader + UK Property (foreign property not confirmed for MTD ITSA)
Free MTD Software PlanNo free plan (14-day free trial only)
MTD Quarterly Updates to HMRC Yes
Final Declaration Yes
Bank Reconciliation Yes
Automated Bank Feeds Yes
Invoice Creation Yes
Receipt Capture (OCR) Yes
Expense Auto-Categorisation Yes
Property Portfolio Management No
Tenant Management No
Joint Ownership & Profit Sharing No
Payroll Yes
HMO Unit-Level Tracking No
HMRC SA105 Box Pre-Mapping No
Spreadsheet Import/Export Yes
PlatformWeb, iOS, Android
GDPR Compliant Yes
02

What Is IRIS KashFlow?

What Is IRIS KashFlow?

Online Accounting Software Made Simple

IRIS KashFlow is a cloud-based accounting platform first released in 2005 and acquired by IRIS Software Group in 2013. IRIS is the UK's largest private sector provider of business-critical software, with over 100,000 business customers across the country. KashFlow is one of IRIS Group's bookkeeping tools, positioned within a broader IRIS ecosystem that includes IRIS Elements, IRIS Accountancy Suite, and KashFlow Payroll.

IRIS KashFlow serves sole traders, contractors, small businesses, growing businesses, and limited companies. All plans include VAT returns with direct HMRC submission, bank feeds, receipt capture, mobile access, and a customisable dashboard with 50+ reports. The Business plan adds multi-user access, unlimited invoicing, unlimited bank reconciliation, and multi-currency. The Business + Payroll plan adds payroll for up to five employees via integration with IRIS Payroll. KashFlow Connect (Orbit) is IRIS KashFlow's accountant portal, allowing practices to manage multiple client accounts and support MTD ITSA submissions.

Strengths

  • HMRC-recognised for MTD ITSA (landlords and sole traders)
  • Full VAT returns with direct HMRC submission on all plans
  • CIS support for construction subcontractors
  • Multi-currency on Business plan
  • Optional payroll (up to 5 employees) on Business + Payroll plan
  • Open Banking bank feeds on all plans
  • KashFlow Connect (Orbit) accountant portal — supports agent filing
  • Integrations with Zapier, Stripe, PayPal, GoCardless
  • 90% off for 6 months for new customers; 14-day free trial

Limitations

  • No free plan — paid-only from £12.50/month + VAT
  • Trustpilot rating of ~1.5 stars from 160+ reviews — significant concerns about reliability and customer service
  • No property portfolio management, tenant management, or HMO features
  • No joint ownership or automatic profit-splitting
  • No confirmed foreign property income support for MTD ITSA
  • Starter plan limited to single user and 10 invoices/month
  • Payroll only on top-tier Business + Payroll plan (£34/month + VAT)
  • KashFlow Trustpilot page not actively monitored by IRIS
  • Recent reviews cite data deletion, billing issues, and poor support responsiveness
03

Making Tax Digital Compliance

How IRIS KashFlow Handles MTD Compliance

IRIS KashFlow is HMRC-recognised for MTD ITSA and applies to unincorporated sole traders and landlords with qualifying income above £50,000. IRIS has committed to delivering an end-to-end MTD ITSA solution within KashFlow including quarterly update submissions, customisable periodic update reports, tax calculations, and submission reminder emails and logs. Agent filing is supported via the KashFlow Connect (Orbit) accountant portal, which allows practices to manage client MTD submissions. IRIS KashFlow is part of the wider IRIS Group MTD offering, which also covers IRIS Elements, IRIS Elements Cashbook, and the IRIS Accountancy Suite.

IRIS KashFlow's official documentation confirms support for "unincorporated / sole trader businesses and landlords" for MTD ITSA purposes. However, foreign property income support specifically within KashFlow's MTD ITSA workflow is not clearly confirmed in KashFlow's official landlord-facing documentation — landlords with overseas rental income should verify this directly with IRIS before committing.

FeatureIRIS KashFlow
HMRC Recognised (MTD VAT) Yes
MTD Quarterly Updates Yes
Final Declaration Yes
Digital Record Keeping Yes
Digital Links Compliant Yes
Sole Trader Income Yes
UK Property Income Yes
Foreign Property IncomeNot confirmed
Multiple Income Streams Yes
Agent Filing on Behalf Yes
04

Property Management

IRIS KashFlow: General Accounting — No Property Management Features

IRIS KashFlow does not include property-specific management features. There is no built-in property portfolio management, tenant management, rent tracking, HMO support, or joint ownership profit-splitting. IRIS KashFlow can be used to track rental income and property expenses through its general bookkeeping tools — income can be recorded, expenses categorised, and bank transactions reconciled — but all property categorisation and organisation must be done manually within a general-purpose framework. Landlords with multiple properties would need to manually manage per-property tracking within KashFlow's general ledger structure.

FeatureIRIS KashFlow
Property Portfolio Management No
Tenant Management No
Rent TrackingManual (general income tracking)
Property Expense AllocationManual (general income tracking)
Multiple Property SupportManual setup only
HMO Property Support No
Joint Ownership/Profit Sharing No
Maintenance Tracking No
Tenant Screening No
Compliance Document Alerts No
Arrears Tracking No
05

Bookkeeping, Accounting & Digital Record Keeping

IRIS KashFlow: Established General Business Accounting with VAT, CIS, and Payroll

IRIS KashFlow provides a comprehensive accounting toolkit for small businesses: double-entry bookkeeping, bank reconciliation via automated Open Banking feeds, a customisable general chart of accounts, VAT returns with direct HMRC submission on all plans, CIS support, multi-currency on the Business plan, and optional payroll via IRIS Payroll on the Business + Payroll plan. Its 50+ reports include P&L, balance sheet, cashflow, and aged debtors. Receipt capture (KashFlow Quick Capture) is available on all plans. The Starter plan is limited to a single user and 10 invoices per month — a meaningful constraint for busy landlords. The Business plan removes these limits and adds multi-user access.

FeatureIRIS KashFlow
Cash Basis Accounting Yes
Chart of Accounts (Pre-built, Landlord-Tailored)Yes (general)
Journal Entries Yes
Bank Reconciliation Yes
Automated Bank Feeds Yes
Open Banking Integration Yes
Double-Entry Bookkeeping Yes
HMRC Box Pre-Mapping No
Xero Integration No
Spreadsheet Import/Export Yes
Digital Record Storage Yes
06

Invoicing, Expense Tracking

IRIS KashFlow: Receipt Capture and Business Invoicing

IRIS KashFlow includes KashFlow Quick Capture for receipt capture on all plans, allowing receipts to be photographed and stored. VAT is automatically updated and submitted directly to HMRC. Invoice creation is highly customisable with branded templates and automatic reminder emails. Recurring invoices are available on the Business plan. The Starter plan limits invoices to 10 per month and bank reconciliation to 25 transactions — constraints that may be insufficient for landlords with active portfolios. The Business plan removes all limits. Some users have noted in reviews that the mobile app's receipt handling is less seamless than desktop, requiring upload via Dropbox rather than direct capture in some cases.

FeatureIRIS KashFlow
Invoice Creation & Sending Yes
Invoice Customisation/Branding Yes
Online Payment Collection Yes
Payment Tracking/Reminders Yes
Expense Tracking Yes
Receipt Capture (OCR/Photo) Yes
Expense Categorisation Yes
Automated Transaction Matching Yes
Mileage Tracking Yes
AI Auto-Categorisation No
07

Reporting & Tax Forecasting

IRIS KashFlow: Comprehensive Business Reporting with 50+ Reports

IRIS KashFlow provides a full suite of 50+ financial reports including P&L, balance sheet, cashflow, aged debtors, aged creditors, VAT reports, and customisable management reports. The dashboard is fully customisable to display the metrics most relevant to the business. Tax calculations are included within the MTD ITSA workflow. IRIS KashFlow does not provide a standalone running tax estimate feature separate from the MTD submission workflow.

FeatureIRIS KashFlow
Profit & Loss Yes
Balance Sheet Yes
Trial Balance Yes
Dashboard / Overview Yes
Real-Time Financial Data Yes
Cash Flow Reporting Yes
Tax Estimate/Forecast No
AI-Powered Features No
08

Collaboration & Mobile Apps

IRIS KashFlow: Free Accountant Portal with Deep IRIS Ecosystem Integration

IRIS KashFlow's accountant portal --- KashFlow Connect --- is free for accountants and bookkeepers with no per-client charge. Accountants can manage multiple KashFlow client accounts from a single dashboard, with real-time access to transactions, reports, and MTD filing status. KashFlow Connect integrates directly with IRIS Accountancy software, used by over 17,000 UK accountancy firms, giving practices a seamless flow from client bookkeeping data to accounts production and tax filing. Agent filing for both MTD VAT and MTD ITSA is fully supported via KashFlow Connect.

FeatureIRIS KashFlow
Accountant / Advisor Portal Yes
Multi-User AccessBusiness plan only (Starter is single-user)
Agent Filing on Behalf Yes
Bank Integration Yes
PlatformiOS, Android
Web Browser Access Yes
FCA Regulated No
GDPR Compliant Yes
09

Ease of Use, Support & Security

IRIS KashFlow: Ease of Use

IRIS KashFlow has been designed for small business owners and sole traders without formal accounting training. The cloud-based interface is accessible from any browser or via the mobile app, with a clear sidebar navigation and customisable dashboard. Bank feeds automatically import transactions from major UK banks, and the invoicing workflow --- from quote to payment via IRIS Pay --- is designed to require minimal accounting knowledge. The platform's 20-year history means its core interface is mature and well-documented through the KashFlow Akademy training library and support knowledge base.

FeatureIRIS KashFlow
Phone SupportLimited (see review concerns)
Chat Support Yes
Email Support Yes
Help Centre/Knowledge Base Yes
FCA Regulated No
Enterprise-Grade Security Yes
10

Unique Features Only IRIS KashFlow Offers

MTD for VAT on All Plans

IRIS KashFlow is fully HMRC-recognised for Making Tax Digital for VAT with direct submission to HMRC on all paid plans. This is essential for VAT-registered landlords and property businesses, and is built into every KashFlow subscription at no extra tier cost.

CIS Support

IRIS KashFlow supports Construction Industry Scheme (CIS) submissions, which is valuable for landlords who carry out property renovation, development, or building work involving subcontractors. CIS handling is confirmed in user reviews as a strength.

CIS (Construction Industry Scheme) Support

IRIS KashFlow includes built-in CIS withholding tax calculations on applicable invoices, CIS deduction recording, and CIS reports --- available on all plans. This makes it suitable for contractors and subcontractors working within the Construction Industry Scheme.

Optional Payroll (Up to 5 Employees)

The Business + Payroll plan (£34/month + VAT) integrates with IRIS Payroll for up to five employees. For landlords who employ property managers, cleaners, or administrative staff, payroll can be managed within the IRIS ecosystem.

Multi-Currency

IRIS KashFlow's Business plan supports multi-currency transactions — useful for landlords invoicing international tenants or managing international financial relationships.

Mileage Tracking

IRIS KashFlow includes mileage tracking on all plans, allowing landlords to claim vehicle expenses for property visits.

Purchase Orders

IRIS KashFlow supports purchase orders for managing supplier transactions — useful for landlords who regularly commission contractors for maintenance and development work.

Zapier and Payment Gateway Integrations

IRIS KashFlow connects to Zapier (enabling automation with Google Sheets, Slack, Trello, and hundreds of other apps), Stripe, PayPal, GoCardless, and IRIS Pay. For landlords with existing tech stacks or e-commerce/payment workflows, these integrations provide meaningful automation capability.

IRIS Group Ecosystem

As part of the IRIS Software Group, KashFlow integrates with IRIS Elements (for accountants), the IRIS Accountancy Suite, KashFlow Connect, and KashFlow Payroll. For practices already within the IRIS ecosystem, KashFlow provides a familiar, integrated environment.

11

Who Should Choose IRIS KashFlow?

IRIS KashFlow may be the better choice for:

Landlords Who Are Also VAT-Registered

If your rental portfolio sits alongside a VAT-registered business and you want MTD ITSA and MTD for VAT managed in a single platform at every subscription tier, KashFlow provides this integration natively.

Landlords in Construction or Property Development

CIS support makes KashFlow a practical choice for landlords who carry out renovation, development, or building work with subcontractors. User reviews specifically confirm CIS handling as a strength.

Landlords Already Embedded in the IRIS Ecosystem

If your accountant uses IRIS Elements or the IRIS Accountancy Suite, or you already use KashFlow for your wider business, staying within the IRIS ecosystem may simplify accountant collaboration and software management.

Landlords Who Need Multi-Currency or Purchase Orders

If you invoice international tenants in foreign currencies or regularly commission suppliers using purchase orders, KashFlow's Business plan provides these capabilities.

Landlords Who Want to Use Zapier Automations

If you run a broader business with existing Zapier workflows connecting to Google Sheets, Slack, CRM tools, or e-commerce platforms, KashFlow's Zapier integration enables automation.