HMRC-Recognised Software

RentalBux – HMRC-Recognised MTD Software for Portfolio Landlords

If you’re a landlord earning rental income from multiple properties, RentalBux makes Making Tax Digital compliance effortless.
HMRC recognised for MTD, RentalBux helps you maintain digital records, track rental income and expenses for each property in your rental property portfolio, and submit your quarterly updates and year-end final declaration with ease.

Why Landlords Rely On Us

Trusted by thousands of portfolio landlords across the UK

RentalBux finally gave me peace of mind.


Even after trying several tools, I was struggling with my portfolio of three rentals. MTD just added to that struggle. But then, I was introduced and all my worries disappeared. MTD submissions in minutes, track each property separately, allocate profit sharing. Wow!

JO

James O.

Landlord & Property Investor

Built for landlords, used by landlords.


As a landlord managing 12 units across two ownership structures and some self-employment income, I needed something that handled everything. RentalBux was the only software that did that.

MR

Maya R.

Portfolio Landlord & Letting Agent

Time saved.


Switching to RentalBux was one of the best decisions I made. Especially the joint-ownership module. Our family property had three owners with different shares, and RentalBux handled it quite efficiently.

MC

Michael Chen

International Landlord, Birmingham

Check if you need to join Making Tax Digital

Answer four quick and easy questions and see whether and when you need to start complying with MTD requirements. A few seconds to determine your eligibility and get guarantees on how you need to proceed.

Added bonus, no data leaves your device. Everything runs on your browser.

HMRC Compliance Tool

Making Tax Digital Checker

Find out when (and if) you need to join Making Tax Digital for Income Tax Self Assessment

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1

Are you digitally excluded?

Digital exclusion means you cannot use digital tools due to age, disability, or lack of reliable internet access.

2

Do you have a National Insurance number?

A National Insurance number is required to join MTD for Income Tax.

3

Why do you need to send a Self Assessment tax return?

Select the main reason for submitting a Self Assessment return.

4

What is your expected qualifying income?

Enter your total gross income before expenses from self-employment or property.

£
We'll use this to determine your Making Tax Digital start date based on HMRC thresholds.
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What RentalBux Does for Landlords with Multiple Property Income

Everything portfolio landlords need for MTD compliance:

Digital Records

Keep clear digital records for each property you let. Track rent, deposits, maintenance costs, repairs, mortgage interest, insurance, utilities, and all allowable landlord expenses. Every property has its own ledger, keeping your portfolio structured and fully aligned with HMRC’s digital record-keeping rules.

Quarterly Update Filing

Your quarterly updates are built automatically from your digital records or your uploaded spreadsheets. All you need to do is review and submit. No manual calculations, no re-entering data, and no risk of missing income or expenses across your properties. 

Final Declaration

At year-end, confirm your total rental income across your full property portfolio, claim all eligible deductions, include other income streams if required, and finalise your tax position. Everything is pre-organised for smooth, accurate MTD reporting.

Why Rentalbux for Portfolio Landlords?

Built for solicitors. Manage property income, expenses, and MTD tax filing all in one place.

Designed by Accountants Who Understand Landlords with Multiple Properties

RentalBux is built with input from accountants and property professionals who work with landlords managing multiple properties. Whether you have two rentals or twenty, the system keeps your income, expenses, and property-level records clean, organised, and HMRC-compliant.

HMRC-Recognised Software for Making Tax Digital (MTD)

RentalBux is HMRC-recognised software for MTD for Income Tax. Every submission, quarterly update, and final declaration meets the latest digital reporting rules — giving you complete compliance confidence.

Landlord-Specific Chart of Accounts for Multi-Property Portfolios

Forget generic bookkeeping categories. RentalBux uses a landlord-focused chart of accounts covering all rental income and allowable expenses across multiple properties including rent, repairs, mortgage interest, maintenance, insurance, service charges, utilities, letting agent fees, and more.

Simple Enough for Non-Accountants

Clear dashboards, step-by-step workflows, and no accounting jargon. Even if you’ve never used bookkeeping software, you can manage your UK rental income confidently without worrying about complex tax rules or quarterly MTD submissions.

Simple, Affordable Pricing!

Choose the perfect plan for your business needs. All plans include our core features with flexible scaling options.

Monthly Yearly
  • Property Units
  • Workspace
  • Storage
  • Bank Feed
  • Insights & Reports
  • Document Management
  • Create Invoices & Bills
  • Support
  • Property Management
  • MTD Compliant
  • Reconcile Bank Transactions
  • Income & Expense Tracking
  • Custom Chart of Accounts
  • Bookkeeping

Free

£0 /month
1
1
250 MB
Not Available
Not Available
Not Available
Up to 5
×

Starter

£6 + VAT/month
£0 /month
(Until March 2026, then £6.00 + VAT/month)
1-3
3
2 GB
Unlimited
Available
Available
Unlimited
Priority

Premium

£20 + VAT/month
£0 /month
(Until March 2026, then £20.00 + VAT/month)
11-20
10
10 GB
Unlimited
Available
Available
Unlimited
Priority

Feel the Difference RentalBux Makes

Real challenges jointly owned property landlords face, and how RentalBux solves them

Challenges Jointly Owned Property Landlords face How RentalBux Solves It
Tracking shared rental income and expenses across jointly owned properties is complex and prone to errors. RentalBux records each co-owner's share of income and expenses and ensures MTD-compliant quarterly submissions.
Maintaining digital records for repairs, mortgage interest, insurance, and service charges is time-consuming. Upload invoices or snap receipts; RentalBux auto-categorises joint property expenses for accurate HMRC reporting.
Coordinating quarterly updates and year-end declarations among co-owners can be confusing. Guided workflows and reminders make digital tax reporting for joint landlords simple and accurate.
Managing multiple jointly owned properties is complex. RentalBux supports property-level ledgers and aggregates totals for MTD threshold calculations and submissions.

Get MTD-Ready in One Call

Book a quick setup session. We’ll walk you through the dashboard, map your income streams, and show you how quarterly updates work, no technical preparation required.

Start Free Trial & Begin Setup

Frequently Asked Questions

Find answers to common questions about our services and solutions.

FAQ Section Image
Does MTD apply to landlords with multiple properties?

Yes. Landlords who own multiple rental properties must combine the gross income from all properties to calculate MTD threshold of £50,000. Even if individual properties earn modest amounts, your total rental income counts toward the threshold. If your combined rental income exceeds the threshold, you must maintain digital records and submit quarterly updates under MTD.

Do I need seperate quaterly updates for each property?

No. All rental income and expenses are reported together in a single quarterly update, although records should be kept separately for each property. This ensures HMRC can verify each property’s income and allowable expenses, while simplifying compliance.

What digital records are required for large UK rental portfolio landlords under MTD?

You must keep digital records of:

  • Rent received for each property

  • Allowable property expenses (repairs, maintenance, insurance, mortgage interest, utilities)

  • Dates, amounts, and supporting receipts

  • Property-specific notes

These records should be organised and easily accessible for quarterly updates and year-end final declarations.

What software or stystem can I use for multiple properties?

HMRC requires digital record-keeping and MTD-compatible software for all landlords meeting the income threshold. Software should:

  • Track each property separately

  • Categorise income and expenses according to HMRC rules

  • Prepare quarterly updates and year-end declarations

Using HMRC-recognised software like Rentalbux ensures compliance, reduces errors, and simplifies record-keeping for multiple properties.

How are allowable expenses tracked accross multiple properties?

Each property’s expenses must be recorded individually, including:

  • Mortgage interest and insurance

  • Repairs and maintenance

  • Letting agent fees and utilities : Expenses are reported per property but aggregated for the quarterly update. Keeping detailed property-level records ensures accurate tax reporting and helps maximise allowable deductions..

What are the penalties for non-compliance as a portfolio landlord?

HMRC uses a points-based penalty system for late or inaccurate submissions. Each missed quarterly update, or final declaration earns points, and exceeding thresholds leads to financial penalties. Landlords with multiple properties have more transactions to track, increasing the risk of errors. Maintaining organised digital records for each property reduces the likelihood of penalties and ensures full MTD compliance.