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HMRC-Recognised Software

Joint Property, Multiple Owners. Split Profit Automatically.

Manage rental income and expenses for jointly owned properties with automatic profit
allocation built in.

Whether you own jointly with your spouse, family members, or multiple investors and whether your split is 50:50, 60:30:10, or completely custom RentalBux handles it. Set your ownership percentages once and RentalBux calculates each owner's share accurately.

Set once, auto-split forever
No spreadsheets
Separate MTD per owner
Any split ratio
HMRC-recognised

"If you're managing joint property, Rentalbux is a game-changer. It makes splitting income and expenses effortless and allows you to assign profit shares across multiple properties in just a few clicks. The platform is intuitive, saves you time, and ensures everything stays transparent and organised, perfect for upcoming MTD compliance. Save yourself the headache of manual calculations and let Rentalbux handle the hard work."

Joshua

Joint landlords, Birmingham

December 2025

3 Properties
60/40 Ownership
Verified
Illustrative customer photo
Actual Customer Testimonial, Photo is for Illustrative purpose only.

Shared property. Manual splits.
Double the work. There’s a better way.

Own rental property with your spouse, partner, or business associate? Stop managing two separate accounts. RentalBux automatically splits rental income, expenses, and MTD submissions based on your ownership percentages-whether 50:50, 45:35:30, or any custom arrangement.

The Challenge

  • Two subscriptions required
  • Manual transaction splitting
  • Calculation errors and HMRC penalties
  • Double the admin, double the cost

The RentalBux Solution

  • One subscription covers up to three Owners
  • Set your split once, auto-split forever
  • Accurate, auditable HMRC-compliant
  • Half the work, full compliance

Set Up Joint Ownership in Minutes

Allocate properties, assign ownership percentages, and automate your reporting all in one place.

Under Making Tax Digital (MTD), each co-owner must report their individual share of rental income and expenses to HMRC quarterly. RentalBux handles this automatically set up once, and every transaction, report, and submission is split correctly.

Set Your Split Once.
RentalBux Handles the Rest.

Accurate profit allocation, effortless quarterly reporting, and full compliance with HMRC's MTD ITSA automatically.

Automatic profit splits

Automatic Profit Splits

Rental income and expenses are automatically divided between all co-owners based on the percentages you set. No manual intervention required.

Instant separate reports

Instant Separate Reports

Generate separate income and tax reports for each co-owner instantly. No manual tracking or duplication.

HMRC MTD ITSA compliant

HMRC MTD ITSA Compliant

Full compliance with Making Tax Digital for Income Tax Self Assessment. Submit each co-owner's share directly to HMRC with a few clicks. No spreadsheets, no errors.

Who Benefits from Automatic Splits?

Joint Ownership Made Simple

You and your spouse/partner own rental property jointly. HMRC allows you to elect for unequal profit shares if you own the property as tenants in common. RentalBux automatically calculates and reports each partner's share, ensuring your MTD submissions reflect the correct ownership percentages.

Example: 2-bed flat
London, joint ownership
Structure: Joint ownership
Ownership: 50/50 (Form 17 optional)
Annual rent: £12,000
Partner-1 50%
Partner-2 50%
Partner-1
£6,000
Partner-2
£6,000
MTD status: Both submit quarterly

Multi-Owner Property Management

You own multiple properties with a business associate on a 60/40 or 70/30 basis. Instead of maintaining two separate accounting systems, RentalBux automatically splits all income and expenses, giving each partner a clear, accurate record for their tax return.

Example: 3-bed house
Manchester
Structure: Tenants in common
Ownership: 40/35/25 three-way
Annual rent: £24,000
Owner-1 40%
Owner-2 35%
Owner-3 25%
Owner-1 (40%)
£9,600
Owner-2 (35%)
£8,400
Owner-3 (25%)
£6,000
MTD status: Each owner submits separately

Keep It in the Family

You have invested in property with a parent, sibling, or adult child. Each co-owner needs their own MTD submission, but managing this manually is time-consuming and error-prone. RentalBux handles the split for you reducing admin and ensuring compliance.

Example: 3-bed flat
Birmingham
Structure: Joint ownership
Ownership: Parent, Daughter, Son
Annual rent: £18,000
Parent 50%
Daughter 30%
Son 20%
Parent (50%)
£9,000
Daughter (30%)
£5,400
Son (20%)
£3,600
MTD status: All three submit quarterly

How RentalBux Compares to
Other Solutions

Compare the RentalBux joint ownership solution vs. maintaining two separate accounts with traditional property management software.

Feature Spreadsheets Other MTD Software RentalBux
Automatic profit splits
Manual calculation required
Not supported or needs two accounts
Fully automated
MTD ITSA compliance
No integration
Compliant but not built for joint owners
Direct submission to HMRC
Separate reports for each owner
Manual export and formatting
Manual workarounds required
Generated automatically
Cost for joint owners
Free but high admin burden
Separate subscription per owner
One subscription, up to 3 owners
Audit trail and accuracy
Prone to errors
Accuracy depends on manual setup
Fully auditable and accurate

Start Free - See the Difference Yourself

Experience the power of automated profit splits and MTD-compliant reporting. No credit card required.

Get Started Free

Frequently Asked Questions

Find answers to common questions about our product, services, and policies

Can I add more than one landlord?

Yes, you can add as many landlords as you need! Our platform supports unlimited joint ownership arrangements, making it easy to manage properties with multiple owners.

Do I need to tell each landlord's split?

Yes, you'll need to specify the percentage split for each landlord to ensure accurate income distribution and tax reporting. This helps us calculate each owner's share of rental income and expenses correctly.

Can the split be unequal?

You can set any percentage split that reflects your ownership agreement. For example, one owner could have 70% and another 30%, or any other combination that adds up to 100%.

Can the split be changed later on?

Yes, you can update ownership percentages at any time. This is useful when ownership arrangements change, and the system will apply the new split going forward while maintaining historical accuracy.

Still have questions?

Contact Support

Ready to Simplify Your Joint Ownership Accounting?

Join landlords who have automated their profit splits and MTD reporting with RentalBux. Start your free today — no credit card required.

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