Joint Property, Multiple Owners.
Split Profit Automatically.
Manage rental income and expenses for jointly owned properties, with each owner's share calculated and reported separately.
Whether you own jointly with your spouse, a family member or a business associate, and whether your profit share is 50:50, 60:40 or a bespoke arrangement, RentalBux handles it. Set your ownership percentages once and the software calculates each co-owner's share automatically across every transaction.
"I chose Rentalbux for MTD as I let 3 properties jointly and wanted a software platform that could manage all this plus I am self employed. The support from Rentalbux, particularly Aayoush has been outstanding. He has coached me through set up and helped troubleshoot any problems that I encountered with professionalism and patience. I can also see that Rentalbux are continually updating the platform to respond to the needs of customers, such as adding letting agent statements which makes it much easier to record gross and net income. I would highly recommend Rentalbux particularly if you aren't familiar with using accountancy software as the support is fantastic."
Katherine Gibbon
What Our Other Users Say
"Had a Teams meeting with RentalBux to demonstrate their Making Tax Digital software. Demonstration was conducted by Sebika. Very well done, really pleasant, very clear explanation and demonstration. She had clearly taken note of what my particular circumstances were with regard to split ownership etc. All too often you take part in these exercises and you have to start from the beginning. She concentrated on the issues relevant to me. Very pleased with how it went, I will be using this software based on how Sebika conducted the Teams meeting.Thank you"
- John McQueen
"I just had a demo of RentalBux in Accountex. It is really impressive for accountants. I was looking for software that does all income types including foreign property. Finally found the software that does all three and joint profit splits for landlords. Thanks Raju for showing the features at the demo. I have now signed up Accountant portal & the MTD portal which is great for MTD workflow."
- Lucy Williams
4.6/5
Average Rating on Trustpilot
Joint Ownership Creates Shared Admin. RentalBux Removes it.
When you own rental property with a spouse, partner or business associate, each co-owner is responsible for reporting their individual share of income and expenses to HMRC under Making Tax Digital for Income Tax Self Assessment. Without the right tools, that means duplicated effort, manual calculations and a high risk of figures that do not agree between owners. RentalBux removes that problem by splitting income, expenses and quarterly MTD updates automatically, based on the ownership percentages you set.
Add Co-Owners and Set Ownership Percentages
Define each co-owner's share of the property and their profit-sharing ratio separately, so the software reflects your actual arrangement.
Under Making Tax Digital for Income Tax Self Assessment, each co-owner must report their individual share of rental income and expenses to HMRC on a quarterly basis. RentalBux handles this automatically. Set up your ownership structure once, and every transaction, report and submission is divided according to each owner's percentage. Where your profit-sharing arrangement differs from your ownership split, for example following a Form 17 election between spouses, you can record both separately so your submissions remain accurate.
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
Rental income and expenses are divided between all co-owners automatically, based on the ownership percentages you have set. There is no need to calculate or allocate figures manually each time a transaction is recorded.
Separate Reports per Owner
Each co-owner has their own income and expense record, drawn from the same underlying transactions. Reports reflect each individual's share only, so there is no duplication and no risk of one owner's figures appearing in anothers.
HMRC MTD ITSA Compliant
RentalBux is recognised by HMRC as MTD-compatible software. Each co-owner's quarterly update is prepared from their individual records and submitted to HMRC separately, in line with the requirements of Making Tax Digital for Income Tax Self Assessment."
Which Landlords Does This Apply To?
Whether you own property with a spouse, business partner, or family member - RentalBux splits income, expenses, and MTD submissions automatically.
Jointly Owned Property Between Spouses and Civil Partners
When married couples or civil partners own rental property jointly, HMRC's default position is that income and expenses are split equally for tax purposes, regardless of the actual ownership shares. This is set out in Section 836 of the Income Tax Act 2007. Where the property is held as tenants in common with genuinely unequal shares, couples can submit a Form 17 declaration to HMRC to be taxed in proportion to their actual ownership. RentalBux supports both arrangements. Set the ownership split that reflects your legal position and the software applies it to every transaction and quarterly submission.
Co-ownership with a Business Associate
Where you co-own rental property with a business associate as tenants in common, each owner holds a defined share and is responsible for reporting their own portion of income and expenses to HMRC. Rather than each co-owner maintaining a separate record of the same property, RentalBux splits all income and expenses automatically based on the agreed ownership percentages. Each owner has their own accurate record to support their quarterly MTD updates and annual Self Assessment.
Property Held with Family Members
Where rental property is held jointly with a parent, sibling or adult child, each co-owner must report their individual share of income and expenses to HMRC under Making Tax Digital for Income Tax Self Assessment. Managing this manually across multiple owners creates a significant risk of figures that do not agree. RentalBux divides income and expenses according to each person's ownership share, and each co-owner's quarterly updates are prepared from their own records, keeping everyone's submissions accurate and consistent.
How RentalBux Compares to
Other Solutions
See why landlords with joint ownership choose Rentalbux over other MTD software or spreadsheets.
| 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.
Frequently Asked Questions
Find answers to common questions about our product, services, and policies
How does RentalBux handle joint ownership?
RentalBux makes joint ownership simple. Set ownership percentages for each property once during setup, and the system automatically splits all rental income and expenses according to those percentages. Each co-owner gets their own accurate reports and separate MTD submissions — no manual calculations required.
Can I set different ownership splits for different properties?
Yes -each property in your portfolio can have its own ownership structure. You might own Property A 50:50 with your spouse, Property B 60:40 with a business partner and Property C 40:35:25 with two other investors. RentalBux tracks each property's ownership separately and calculates profit splits accordingly.
Does joint ownership work with foreign properties?
Yes. RentalBux handles joint ownership splits for both UK and overseas rental properties. Each co-owner receives their percentage share of foreign rental income and expenses, ensuring correct reporting to HMRC. Foreign property income is tracked separately for accurate tax reporting.
Can I add or remove a joint owner in RentalBux?
Yes. If your ownership structure changes — for example, you buy out a co-owner or add a new investor — you can update the ownership percentages in RentalBux at any time. The system will apply the new split to future transactions while preserving historical records.
How does RentalBux handle expenses paid by one joint owner?
If one co-owner pays an expense (e.g., repairs or insurance), RentalBux still allocates the deduction according to your ownership percentages. Each owner's report reflects their share of all income and expenses — regardless of who physically made the payment.
Is there a limit to how many properties can have joint ownership?
No. You can set up joint ownership on any number of properties in your RentalBux portfolio. Each property can have its own unique ownership structure and split percentages.
Can I use RentalBux if I own property with someone who isn't my spouse?
Yes. RentalBux supports joint ownership between any co-owners — spouses, civil partners, family members, friends, or business partners. Simply set your ownership percentages and RentalBux handles the rest.
Does joint ownership affect mortgage interest relief (Section 24)?
Yes. Section 24 restricts mortgage interest relief to the basic rate (20%) for individual landlords. Each co-owner receives their share of the restricted relief based on their ownership percentage. RentalBux calculates Section 24 adjustments automatically for each owner.