RentalBux vs. QYON SE
Which MTD Software Is Better for UK Landlords and Sole Traders?
Overall Winner: RentalBux
RentalBux is the more complete MTD solution for UK landlords and sole traders. It is fully HMRC-recognised for Making Tax Digital for Income Tax across all three qualifying income types — UK property, foreign property, and self-employment — and combines that compliance with comprehensive property management, bank feed integration, automated bookkeeping, and a permanently free plan for single-property landlords until March 2028. QYON SE is an HMRC-recognised financial management platform for the self-employed and small businesses, built by Qyon Software Ltd — a North American company with offices in London, Miami, and São Paulo. It offers automatic bank transaction categorisation via Plaid-powered Open Banking, online invoicing, multi-currency support, custom financial reports, and MTD compliance. However, QYON SE contains no property management features and its supported income types for MTD submissions, pricing, and platform availability are not fully documented publicly. For landlords mandated from 6 April 2026 who need confirmed all-in-one property management and MTD compliance, RentalBux is the stronger, more transparent choice.
At-a-Glance MTD Software Comparison
Key differences between RentalBux and Qyon SE across MTD compliance, property management, bookkeeping, pricing, and landlord-specific features.
| Feature | RentalBux | Qyon SE |
|---|---|---|
| Software Type | Property/Landlord Platform | Financial Management Platform (Self-Employed & SME) |
| Target Users | Landlords, Sole Traders, Letting Agents | Self-Employed, Small Businesses, Freelancers |
| Income Sources Supported | Sole Trader + UK Property + Foreign Property | Self-Employed / Sole Trader income |
| Free MTD Software Plan | Free until March 2028 (1 property) | No |
| MTD Quarterly Updates to HMRC | Yes | Yes |
| Final Declaration | Yes | Yes |
| Bank Reconciliation | Yes | Yes |
| Automated Bank Feeds | Yes | Yes |
| Invoice Creation | Yes | Yes |
| Receipt Capture (OCR) | Yes | Yes |
| Expense Auto-Categorisation | Coming soon | Yes |
| Property Portfolio Management | Yes | No |
| Tenant Management | Yes | No |
| Joint Ownership & Profit Sharing | Yes | No |
| Payroll | No | No |
| HMO Unit-Level Tracking | Yes | No |
| HMRC SA105 Box Pre-Mapping | Yes | No |
| Spreadsheet Import/Export | Yes | No |
| Platform | Web, iOS, Android | Web, Android |
| GDPR Compliant | Yes | Yes |
What Is RentalBux? What Is QYON SE?
What Is RentalBux?
All-in-One MTD Software for Landlords and Sole Traders
RentalBux is an all-in-one property management, accounting, and Making Tax Digital compliance platform built specifically for UK landlords, letting agents, and self-employed individuals. Designed with direct input from accountants who specialise in property and sole trader tax, RentalBux covers everything from tenancy management and rent collection to full bookkeeping with a pre-configured chart of accounts tailored to the property sector.
RentalBux is fully HMRC-recognised for Making Tax Digital for Income Tax across all three qualifying income categories: UK property income, foreign property income, and self-employment. This makes it one of the only landlord-specific MTD software platforms that can handle a landlord who also runs a sole trader business, all from a single subscription.
A major differentiator is RentalBux's pricing model: single-property landlords can use the platform completely free until March 2028, making it one of the most affordable HMRC-approved MTD software options for landlords entering the MTD regime.
What Is Qyon SE?
Automate finances. Grow your business.
QYON SE is an all-in-one financial management platform built by Qyon Software Ltd — a North American company with a proven track record in complex accounting environments in Brazil and an expanding presence in the United Kingdom. The company has offices in London (2 Lakeside Drive, 6th Floor, London NW10 7FQ), Miami, and São Paulo. QYON SE is one of three UK products in the QYON ecosystem, alongside QYON Bill (AI-powered receipt management) and QYON CRM (customer relationship and marketing automation).
QYON SE is designed for the self-employed and small business owners who want to take full control of their finances through automation and intelligent categorisation — without the complexity of enterprise accounting software. The platform connects directly to bank accounts via Plaid-powered Open Banking, categorises transactions automatically, and provides customisable financial reports including profit and loss and cash flow insights. It also handles online invoicing, expense management with receipt capture, accounts payable and receivable, and multi-currency transactions with real-time exchange rate updates.
Strengths
- Free MTD software for single-property landlords until March 2028
- Handles sole trader + UK property + foreign property income in one platform
- Joint ownership with automatic profit-sharing split by ownership percentage
- Pre-built chart of accounts tailored for landlords and sole traders
- AI-powered expense auto-categorisation and OCR receipt capture
- Agent filing on behalf of landlords — ideal for accountants and letting agents
- Supports HMO properties with auto-created units
Strengths
- HMRC-recognised for MTD ITSA
- Plaid-powered Open Banking — FCA-regulated bank connection
- Automatic transaction categorisation
- Multi-currency support with real-time exchange rates
- Online invoicing with automatic reminders and payment options
- Receipt capture and expense management
- Custom financial reports (P&L, cash flow)
- Accounts payable and receivable with customisable alerts
- Global company with offices in London, Miami, and São Paulo
- Attended Accountex London 2025 and Accountex Manchester 2025 (QYON Bill)
Limitations
- Newer to market compared to established platforms
- No yield or LTV investment analysis tools
- No MTD for VAT support yet
- Some advanced reporting features still in development
- Limited third-party app integrations
- No offline capability
- No tax liability forecasting feature currently
Limitations
- UK/foreign property income type support not specifically confirmed
- Pricing not publicly available for QYON SE
- No property management features
- No documented agent/accountant filing workflow
- No Trustpilot profile or independent review data found
- Newer to UK market — limited UK-specific review track record
- Agent of Plaid — not FCA-authorised in its own right
- Mobile app for QYON SE not specifically documented
Making Tax Digital Compliance
How RentalBux Handles MTD Compliance
RentalBux supports all three MTD qualifying income categories: sole trader income, UK property income, and foreign property income. This makes it suitable for landlords who also earn self-employment income, eliminating the need for separate software. Most accounts are pre-mapped to HMRC Self-Assessment boxes. RentalBux also supports agent filing, allowing accountants or letting agents to submit MTD returns on behalf of their landlord clients.
How QYON SE Handles MTD ITSA Compliance
QYON SE confirms HMRC recognition for MTD for Income Tax on its website, stating it is "HMRC-recognised software for MTD IT." The platform is designed around self-employed professionals and small businesses, making it well-suited to sole traders who need MTD compliance alongside automated bookkeeping. Whether the platform's HMRC recognition extends to UK property income and foreign property income — in addition to self-employment — is not explicitly stated on its website, and prospective landlord users should verify this directly with Qyon Software before selecting it as their MTD solution.
| Feature | RentalBux | Qyon SE |
|---|---|---|
| HMRC Recognised (MTD ITSA) | Yes | Yes |
| MTD Quarterly Updates | Yes | Yes |
| Final Declaration | Yes | Yes |
| Digital Record Keeping | Yes | No |
| Digital Links Compliant | Yes | No |
| Sole Trader Income | Yes | Yes |
| UK Property Income | Yes | No |
| Foreign Property Income | Yes | No |
| Multiple Income Streams | Yes | No |
| Agent Filing on Behalf | Yes | No |
Winner: RentalBux on breadth; draw on HMRC recognition — Both platforms confirm HMRC recognition for MTD for Income Tax. RentalBux is confirmed across all three income types including UK and foreign property. QYON SE's property income coverage is not specifically confirmed. For landlords with property income, verifying QYON SE's supported income types directly is essential before committing.
Property Management
RentalBux: Property Management
RentalBux provides comprehensive property portfolio management with tenant management, rent tracking, property expense allocation, and support for multiple properties. A standout feature is its joint ownership and profit-sharing capability: landlords can define ownership percentages once, and RentalBux automatically splits rental income and expenses. RentalBux also supports HMO properties, automatically creating individual units.
QYON SE: No Property Management Features
QYON SE does not offer any property management functionality. It is a general-purpose financial management tool for the self-employed and small businesses, not a landlord-specific platform. For landlords who want to manage their property portfolio, tenant communications, compliance, and MTD tax submissions from a single platform, QYON SE is not the right tool.
| Feature | RentalBux | Qyon SE |
|---|---|---|
| Property Portfolio Management | Yes | No |
| Tenant Management | Yes | No |
| Rent Tracking | Yes | No |
| Property Expense Allocation | Yes | No |
| Multiple Property Support | Yes | No |
| HMO Property Support | Yes (auto-creates units) | No |
| Joint Ownership/Profit Sharing | Yes (auto-split by %) | No |
| Maintenance Tracking | No | No |
| Tenant Screening | No | No |
| Compliance Document Alerts | Yes | No |
| Arrears Tracking | No | No |
Winner: RentalBux — QYON SE offers no property management features. For landlords who want one platform covering portfolio management and MTD compliance, RentalBux is the only option between the two.
Bookkeeping, Accounting & Digital Record Keeping
RentalBux: Structured Accounting
RentalBux includes a pre-built chart of accounts specifically designed for landlords and sole traders, covering rental income, mortgage interest, insurance, property repairs, professional services, utilities, and tenant deposits. All accounts are pre-mapped to HMRC Self-Assessment boxes. The platform supports cash basis accounting, bank reconciliation, and journal entries.
QYON SE: Automated Bookkeeping with Multi-Currency and Open Banking
QYON SE connects directly to bank accounts via Plaid-powered Open Banking and categorises transactions automatically. It supports customisable financial reports including profit and loss and cash flow dashboards, and handles accounts payable and receivable with customisable grids, filters, and alerts. A standout feature relative to most UK landlord and sole trader platforms is its multi-currency support — QYON SE automatically manages transactions in multiple currencies with real-time exchange rate updates. This is a genuine differentiator for self-employed professionals who invoice international clients or hold foreign currency accounts.
| Feature | RentalBux | Qyon SE |
|---|---|---|
| Cash Basis Accounting | Yes | No |
| Chart of Accounts (Pre-built, Landlord-Tailored) | Yes (pre-built + custom) | No |
| Journal Entries | Yes | No |
| Bank Reconciliation | Yes | Yes |
| Automated Bank Feeds | Yes (Major UK banks) | Yes |
| Open Banking Integration | Yes | Yes |
| Double-Entry Bookkeeping | Yes | No |
| HMRC Box Pre-Mapping | Yes | No |
| Xero Integration | No | No |
| Spreadsheet Import/Export | Yes | No |
| Digital Record Storage | Yes | No |
Winner: RentalBux leads on landlord-specific accounting depth, formal accounting reports, and a pre-mapped chart of accounts.
Invoicing, Expense Tracking
RentalBux: Expense Management
RentalBux includes OCR receipt capture, structured expense tracking with landlord-specific categories, auto-categorisation, invoice creation with customisable branding, and payment tracking with reminders.
QYON SE: Automated Expense Management with International Focus
QYON SE provides online invoicing with personalised invoice creation, automatic payment reminders, and online payment options — well-suited to freelancers and consultants managing multiple clients. Receipt capture with automatic categorisation is a core feature. Multi-currency expense tracking means businesses dealing in international transactions can manage their entire accounts payable and receivable in multiple currencies without manual conversion.
| Feature | RentalBux | Qyon SE |
|---|---|---|
| Invoice Creation & Sending | Yes | Yes |
| Invoice Customisation/Branding | Yes | Yes |
| Online Payment Collection | Yes | Yes |
| Payment Tracking/Reminders | Yes | Yes |
| Expense Tracking | Yes | Yes |
| Receipt Capture (OCR/Photo) | Yes | Yes |
| Expense Categorisation | Yes | |
| Automated Transaction Matching | Yes | |
| Mileage Tracking | No | |
| AI Auto-Categorisation | Coming soon |
Winner: RentalBux has stronger landlord-specific expense categorisation mapped to HMRC SA boxes, with AI categorisation Coming Soon. The right choice depends on whether you need landlord-specific categories or international invoicing capability.
Reporting & Tax Forecasting
RentalBux: Formal Accounting Reports
RentalBux produces structured financial reports including profit & loss statements, balance sheets, journal reports, ledger reports, and trial balances. Smart categorisation helps ensure accuracy.
QYON SE: Customisable Financial Dashboards
QYON SE provides customisable financial reports and dashboards for performance analysis, with explicit mention of profit and loss and cash flow insights. The platform is designed to give business owners real-time visibility over their finances. Formal accounting report outputs such as balance sheets and trial balances are not specifically documented.
| Feature | RentalBux | Qyon SE |
|---|---|---|
| Profit & Loss Report | Yes (formal) | Yes |
| Balance Sheet | Yes | No |
| Trial Balance | Yes | No |
| Dashboard/Overview | Yes | Yes |
| Real-Time Financial Data | Yes | Yes |
| Cash Flow Reporting | No | Yes |
| Tax Estimate/Forecast | Yes | No |
| AI-Powered Features | Coming soon | Yes |
Winner: RentalBux has more formal accounting outputs (balance sheet, trial balance). For landlords, RentalBux's formal reporting is more relevant.
Collaboration & Mobile Apps
RentalBux's Collaborative Features
RentalBux enables agent filing, which gives accountants and letting agents the ability to submit directly on a landlord's behalf.
QYON SE: Web-Based Platform with FCA-Regulated Banking
QYON SE is a web-based financial management platform. Mobile access for QYON SE specifically is not documented on its website, although QYON Bill (the companion receipt management product) has mobile functionality. Agent or accountant multi-client access for QYON SE is not specifically documented. The platform's FCA-regulated Plaid connection provides a strong security and compliance foundation for its Open Banking features.
| Feature | RentalBux | Qyon SE |
|---|---|---|
| Accountant/Advisor Portal | Yes | No |
| Multi-User Access | Yes | No |
| Agent Filing on Behalf | Yes | No |
| Bank Integration | Yes | Yes |
| Platform | iOS, Android | Web, Android |
| Web Browser Access | Yes | Yes |
| FCA Regulated | Yes | Yes |
| GDPR Compliant | Yes | Yes |
Winner: RentalBux on collaboration. RentalBux leads on agent filing, multi-client dashboard, and confirmed mobile apps.
Ease of Use, Support & Security
RentalBux: Guided Workflows
RentalBux uses guided workflows, clear dashboards, and no accounting jargon. The platform offers phone support, email/chat support, and a help centre with guides and knowledge base articles.
QYON SE's Ease of Use
QYON SE is part of the QYON Intelligent Systems group — a North American company with offices in London, Miami, and São Paulo. The UK entity (Qyon Software Ltd) is FCA-regulated in its capacity as an agent of Plaid. QYON Bill, the companion product, attended Accountex London 2025 and Accountex Manchester 2025, demonstrating active UK market engagement. QYON Bill also holds Black Duck certification, confirming its security and trust standards. No Trustpilot profile was found for Qyon Software Ltd or QYON SE as of 6 April 2026, and no independent third-party reviews of QYON SE are publicly available.
| Feature | RentalBux | Qyon SE |
|---|---|---|
| Phone Support | Yes | No |
| Chat Support | Yes | No |
| Email Support | Yes | No |
| Help Centre/Knowledge Base | Yes | No |
| FCA Regulated | Yes | Yes |
| Enterprise-Grade Security | Yes | No |
RentalBux Features
Sole Trader Income Support for MTD
RentalBux is one of the few landlord-focused MTD software platforms that supports self-employment income alongside UK and foreign property income within a single account. Landlords who also run a trade, consultancy, or freelance business can manage all quarterly submissions from one dashboard. Landlord Studio covers property income only.
Custom Chart of Accounts for Landlords
A property-tailored chart of accounts covering rental income, mortgage interest, insurance, repairs, utilities, letting agent fees, and more — all pre-mapped to HMRC Self-Assessment boxes. No setup required; the system is ready to use from day one. Landlord Studio has no equivalent.
Agent Filing on Behalf of Landlords
Letting agents and accountants can submit MTD quarterly updates and the Final Declaration on behalf of landlord clients directly from the platform. Landlord Studio allows accountant access but does not support submission on the landlord's behalf.
Branded Invoice Creation
Invoice creation with customisable branding for service charges and commercial landlords. Not available in Landlord Studio.
AI-Powered OCR Receipt Capture with Auto-Categorisation (Coming soon)
RentalBux's AI will read uploaded receipts and categorise the expense automatically against the pre-built chart of accounts. Landlord Studio's Smart Scan extracts dates and amounts but does not include AI-driven expense categorisation.
Formal Accounting Reports
Balance sheet, trial balance, ledger reports, and journal reports. Landlord Studio does not produce these natively.
Free Plan Including MTD Submissions Until March 2028
RentalBux's free single-property plan includes MTD quarterly submissions. Landlord Studio's free GO plan covers property management for up to three units but requires a paid PRO plan (from £12/month) to access MTD submission functionality.
Unique Features Only QYON SE Offers
Multi-Currency Support with Real-Time Exchange Rates
QYON SE supports transactions in multiple currencies with automatic real-time exchange rate updates. This is a genuine differentiator for self-employed professionals who invoice international clients or manage foreign currency income.
Plaid-Powered Open Banking (FCA-Regulated)
QYON SE's bank connection is powered by Plaid Financial Ltd. (FRN: 804718), an FCA-authorised payment institution. Qyon Software Ltd operates as Plaid's agent, giving QYON SE a formally regulated Open Banking connection with a strong compliance pedigree in the UK banking ecosystem.
Live Automatic Transaction Categorisation
QYON SE's transaction categorisation is live and functional today — not Coming Soon. For self-employed professionals who want transactions sorted automatically without manual intervention, this reduces day-to-day bookkeeping effort immediately.
Cash Flow Reporting
QYON SE explicitly documents cash flow insights as part of its customisable reporting suite.
Global Software Ecosystem with Brazilian Accounting Heritage
QYON is a North American company with a proven track record in complex accounting environments in Brazil — one of the world's most demanding tax compliance environments. Its UK product line (QYON SE, QYON Bill, QYON CRM) brings international-grade accounting infrastructure to UK small businesses and self-employed professionals.
Accountex London and Manchester 2025 Presence
QYON Bill attended both Accountex London 2025 and Accountex Manchester 2025 — the UK's largest accounting industry events — demonstrating active engagement with the UK accountancy community.
Who Should Choose RentalBux?
RentalBux is a strong fit if you:
Landlords with Mixed Income Streams
If you earn from both property and self-employment, RentalBux handles sole trader income alongside UK and foreign property income in a single MTD-compliant platform.
Joint Owners and Family Portfolios
The automated profit-sharing split is a standout feature. Define ownership percentages once and RentalBux calculates each owner's share automatically.
Budget-Conscious Landlords Entering MTD
Free MTD software for single-property landlords until March 2028, with no upfront commitment.
Landlords Who Want Proper Accounting Structure
Chart of accounts, journal entries, profit & loss, balance sheet, and trial balance give RentalBux a structured accounting foundation.
Accountants and Letting Agents
Agent filing on behalf, multi-user access, and spreadsheet import make RentalBux practical for professionals managing multiple landlord portfolios.
Commercial Landlords and HMO Owners
Invoice creation with branding for service charges, plus automatic HMO unit creation and tenant management.
Who Should Choose QYON SE?
QYON SE may be worth considering for:
Self-Employed Professionals with International Clients
For sole traders, consultants, or freelancers who invoice in multiple currencies or receive international payments, QYON SE's multi-currency support with real-time exchange rates is a meaningful differentiator.
Small Business Owners Wanting Automated Bookkeeping
For small business owners who want transactions categorised automatically from day one — without waiting for an AI feature to launch — QYON SE's live automatic categorisation delivers that today.
Users Who Value Open Banking Security
QYON SE's Plaid-powered Open Banking connection, regulated by the FCA (FRN: 804718), gives it a strong security pedigree for users who prioritise the safety of their financial data connections.
Businesses That Need Cash Flow Reporting
QYON SE documents cash flow insights as a core feature. For small business owners who need regular cash flow visibility alongside MTD compliance, this is a useful included feature.