Each joint owner of a let property is taxed on the share of the rental profit they receive or are entitled to, which is usually their ownership share, although joint owners who are not married can agree a different split if it reflects what actually happens. Married couples and civil partners who live together are different: section 836 of the Income Tax Act 2007 treats them as entitled to the income 50:50, whatever their ownership shares, unless they make a valid Form 17 declaration that matches unequal beneficial ownership.

Who is taxed on rent from a jointly owned property?

Section 271 of the Income Tax (Trading and Other Income) Act 2005 charges property business profits on “the person receiving or entitled to the profits”. HMRC’s Property Income Manual at PIM1030 stresses that this test does not depend on property law concepts such as legal title. In Khan v HMRC [2021] EWCA Civ 624 and Good v HMRC [2023] EWCA Civ 114 the Court of Appeal held that either receipt or entitlement is enough, and that “entitled to” does not require beneficial entitlement in the technical sense.

So HMRC looks at the reality. PIM1030 gives the example of A and B who jointly own a property legally and beneficially, but A controls the letting and receives all of the rent while B is just a name on the documents. A is the person receiving the income and is taxed on it. Equally, someone who collects rent as agent for the other owners is not taxed on their share merely because it passes through their account.

How do joint owners who are not married split the profits?

For siblings, friends, parents and adult children, or unmarried partners, PIM1035 says the share of profit or loss will normally match the share each person owns in the property. Joint owners can, however, agree a different division of profits and losses, and in that case the share for tax purposes must be the share actually agreed. HMRC repeated this in its clarification note on the furnished holiday lettings repeal.

Two practical conditions follow from the guidance:

  • Evidence. Each owner needs evidence that the share they declare is the right one. In most cases that is the ownership share; where it is different, there should be something showing the agreement and that the money actually follows it.
  • Consistency. HMRC expects the share to stay the same over time unless there is a clear change of circumstances, such as a change in beneficial ownership. Moving income between owners from year to year to use personal allowances or basic rate bands, without any such change, does not fit that guidance.

Each owner is personally responsible for returning their own share, even if one of them keeps the records.

What is the 50:50 rule for spouses and civil partners?

Section 836 ITA 2007 applies where income arises from property held in the names of two people who are married to, or civil partners of, each other and who live together. They are treated as beneficially entitled to the income in equal shares. HMRC’s Trusts, Settlements and Estates Manual at TSEM9814 confirms the rule applies even if the couple own the property in unequal shares, and TSEM9846 gives the example of a 90:10 ownership that can still be taxed 50:50.

Some points about its scope:

  • It applies only to property in joint names. Property held in one spouse’s sole name is outside it, as is property held through a nominee (TSEM9810).
  • It does not apply where the couple hold an asset jointly with a third person.
  • “Living together” follows section 1011 ITA 2007: a couple are treated as living together unless separated by court order, by deed of separation, or in circumstances likely to be permanent.
  • When a sole owner puts property into joint names, the 50:50 split runs from that date (TSEM9828). When an unmarried couple who already own property jointly then marry, the rule applies from the date of marriage (TSEM9832).

When do actual shares apply instead of 50:50?

Section 836(3) lists the exceptions. For a rental property the relevant ones are:

  • Exception B: a declaration under section 837 on Form 17 has effect. This requires unequal beneficial interests in both the property and the income, and the declaration must reach HMRC within 60 days. It is explained in detail in Form 17 and declarations of trust.
  • Exception C: the income is partnership income, in which case it follows the partnership agreement.
  • Exception A: neither spouse is beneficially entitled to the income, for example where they hold the property as trustees.
  • Exception F: another provision treats the income as someone else’s, such as the settlements legislation.

Exceptions D and DA, which excluded furnished holiday lettings, were repealed by the Finance Act 2025. From 6 April 2025 a jointly owned holiday let is subject to the 50:50 default like any other letting (TSEM9820). See furnished holiday lettings after abolition.

Once a couple separate permanently, the 50:50 rule stops and each is taxed on their actual entitlement (TSEM9836).

Is a joint letting a partnership?

PIM1035 states that joint letting does not, of itself, make the activity a partnership. Usually there is no partnership, and each owner’s share simply forms part of their own property business. If the owner also lets other property in their sole name, the joint share and the sole lettings are combined into one UK property business, so expenses and losses on one can be set against profits on another.

Less commonly, the arrangement does amount to a partnership, for example where the letting is carried on within a trading partnership or a partnership investment business. A partnership property business is a separate business from each partner’s own lettings. A partnership loss cannot be set against a personal property profit, or the other way round, and each partnership is kept separate from any other.

PIM1035 adds that it is unusual for individuals to own property jointly with a company outside a formal partnership.

How does this work in practice?

Illustration only. A flat produces a rental profit of £12,000 a year. It is owned 70:30 as tenants in common.

Owners Position Taxable shares
Two sisters No agreement to vary £8,400 and £3,600
Two sisters Written agreement, followed in practice, that profits are split 50:50 £6,000 each
Married couple living together No Form 17 £6,000 each
Married couple living together Valid Form 17 matching the 70:30 ownership £8,400 and £3,600, for income arising after the declaration

A married couple cannot elect for a split that differs from their ownership. If they own 70:30 they can be taxed 70:30 or 50:50, but not 90:10.

What are the common mistakes?

  • Assuming the names on the title decide the split. The legal title is a starting point; beneficial ownership and who actually receives and controls the rent decide it.
  • Assuming a married couple are taxed on their ownership shares automatically. Without a valid Form 17 they are taxed 50:50.
  • Making a Form 17 declaration where the couple own as beneficial joint tenants. TSEM9850 says this is not possible, because joint tenants do not own distinct shares.
  • Changing the split between unmarried owners from year to year without any change in ownership.
  • Treating a family letting as a partnership, or ignoring a genuine partnership and mixing its results with personal lettings.

Joint ownership also affects the property income allowance, mortgage interest relief and, for a joint owner living abroad, the Non Resident Landlord Scheme, which taxes each owner on their own share.

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Reviewed by Christine Anderson, Broker, Solar Protect. Last reviewed 8 October 2026. Part of Accountapedia, the Solar Protect guide to UK tax and accounting. This page is general information, not personalised advice.