RentalBux is the complete landlord software built for UK property owners and sole traders who need to comply with Making Tax Digital. If you're a UK landlord or sole trader trying to get your head around Making Tax Digital, you've probably realised pretty quickly that most accounting software wasn't built with you in mind. RentalBux was. It's landlord software built from the ground up for people who earn rental income — whether you have one property or twenty, whether you're purely a landlord or you also run a business on the side.
Here's what RentalBux actually does, in plain English.
What RentalBux is?
RentalBux brings together three things that UK landlords and sole traders have traditionally needed separate tools for: property management, rental accounting, and HMRC tax compliance. Instead of juggling spreadsheets, a separate accounts package, and a folder full of paper receipts, you have one dashboard that handles all of it.
It's HMRC-recognised for Making Tax Digital which means you can connect directly to HMRC and submit your quarterly updates without any bridging software or third-party workarounds.
Who it's built for?
If you are... | RentalBux helps you... |
|---|---|
A single buy-to-let landlord | Track rent, log expenses, and file MTD quarterly updates — free until March 2028 |
A portfolio landlord (multiple properties) | Manage income and expenses per property, joint ownership splits, and unlimited MTD submissions |
A jointly owned property landlord | Auto-split profit between co-owners and generate separate MTD filings for each |
A landlord with overseas properties | One of the very few platforms recognised by HMRC for foreign property MTD |
A self-employed person who also lets property | Handle rental income AND self-employment income in one submission workflow |
The five things RentalBux does every day
Tracks your rental income and expenses
Every rent payment, every repair bill, every letting agent fee — recorded and categorised automatically against HMRC's chart of accounts. You're not just storing data; you're keeping MTD-compliant records in real time.
Manages your properties and tenancies
Add your properties, set up tenancy records, generate rent invoices automatically, send reminders to tenants, and track every payment. Everything is linked to the property it relates to, so your records are always organised by address — not just by date.
Reconciles your bank account
Connect your bank account or upload CSV statements and RentalBux matches transactions to your invoices and bills automatically. Monthly reconciliation takes minutes, not hours — and it means your quarterly MTD submission pulls from verified figures, not guesswork.
Stores your compliance documents
Gas safety certificates, EPCs, and other Compliances, tenancy agreements — all stored in one place with expiry date tracking. RentalBux alerts you before anything runs out, so you're never caught with a lapsed certificate.
Submits your MTD quarterly updates directly to HMRC
When the quarterly deadline arrives, your figures are already there — reconciled, categorised, and ready. Review the summary and click Submit. RentalBux sends your data directly to HMRC through its approved API connection and stores your confirmation receipt automatically.
What makes RentalBux different from Generic Accounting Software
Feature | RentalBux | Generic accounting tools (Xero, FreeAgent, Zoho) |
|---|---|---|
Property-level income & expense tracking | ✓ | ✗ |
Tenant & lease management | ✓ | ✗ |
Joint ownership with profit splitting | ✓ | ✗ |
MTD for UK property income | ✓ | ✓ |
MTD for foreign property | ✓ | Xero only |
MTD for self-employment | ✓ | ✓ |
Combined rental + self-employment MTD | ✓ | ✗ |
Compliance document storage with expiry alerts | ✓ | ✗ |
Free tier (1 property, full MTD) | ✓ free until Mar 2028 | ✗ |
How much does RentalBux cost?
The free plan covers one property unit with full MTD compliance — no credit card required, no trial period, free until March 2028. All paid plans are also free until August 2026, after which pricing for multiple property units starts from just £4.50 per month, and from £9.75 per month for the Hybrid plan that combines UK property, foreign property, and self-employment MTD with AI bookkeeping assist.
See the full plan comparison in the Pricing section of the support centre. [Link to Support Comparison 10.1]
Not sure if RentalBux is right for you? The free plan is the best way to find out — set up your first property unit, connect your bank, and try a mock MTD submission. No commitment, no credit card.
Who Needs RentalBux?
You need RentalBux if you are:
A UK landlord with gross rental income over £50,000 (MTD starts April 2026)
A UK landlord with income £30,000-£50,000 (MTD starts April 2027)
A sole trader, freelancer, or contractor with self-employment income over £50,000
A landlord with a side business who needs to manage both rental income and self-employment under MTD
Managing commercial or residential properties
Handling joint-ownership properties with profit-sharing
Earning from UK and foreign rental properties
Combining rental income with self-employment work and needing one platform for property and business accounting
Looking for the best landlord software UK that covers all MTD obligations in one place