How a married couple were told they had got the tax on their rental property wrong because a form had never been filed, and how going back to the legislation, rather than the form, led HMRC to close its enquiry within four weeks of our response.
The Situation
“Mr and Mrs Menon” are a married couple living together in the UK. Some years ago, Mr Menon bought a house in his sole name, and it has remained registered at HM Land Registry in his name alone ever since.
In late 2019, shortly before the house was first let, Mr Menon signed a formal deed assigning the whole of his beneficial interest in it to his wife. Mrs Menon had left employment, and the rent was to be hers. So, she managed the letting from the start, used the income for her own professional development, and reported 100% of the rental profit on her own Self Assessment Tax Return every year from 2019/20 to 2024/25.
HMRC's challenge: Missing Form 17
Mrs Menon had reported the whole of the rental profit on her own Self Assessment return every year and paid the tax on it. Even so, HMRC wrote to Mr Menon asking him to make a disclosure of the rental income, covering every year since the property was first let. We replied on his behalf, explaining the deed and that the rent had always been Mrs Menon's.
HMRC's reply introduced a new argument. Because the couple had never filed a Form 17 declaring unequal ownership, it said, the rental income had to be treated as split 50/50 between them for every year since the property was first let. Half the rent should therefore have been on Mr Menon's return and, because he paid tax at a higher rate than his wife, there had been a potential loss of tax. HMRC treated our correspondence as notice of an intention to disclose and sent a schedule of tax, interest and penalties and a letter of offer for Mr Menon to sign. Mrs Menon, it said, could reclaim some of the tax she had already paid.
For the couple, that prospect was unsettling. Six years of returns reopened, a disclosure in Mr Menon's name for income that had already been declared, interest running from the original due dates, and the possibility of penalties on top. All of it turning on a form they were now being told they should have filed years earlier. It is the kind of letter that leads many people to accept HMRC's position without question.
How UKPA Responded to HMRC
In our second letter, we started from the legislation the form belongs to rather than the form itself.
- Started with the Wording of the 50/50 Rule - The equal-split rule in section 836 of the Income Tax Act 2007 applies to income from property “held in the names of” spouses or civil partners who live together. Every other part of the rule asks who is beneficially entitled. This gateway asks only whose names the property is held in, which is a question of legal title. The house had only ever been registered in Mr Menon’s name, so the gateway was never passed.
- Showed Why the Deed Did Not Change That - The deed carried both spouses’ names, but it was not a document of title. It passed Mr Menon’s beneficial interest to his wife and left the legal estate where it was, with Mr Menon holding it as bare trustee for her. HMRC's own guidance at TSEM9810 says the 50/50 rule applies only to property held in joint names. It does not apply where property is held in the name of only one spouse or civil partner, or in a nominee's name even where both spouses own it.
- Explained the Role of a Form 17 - HMRC had treated the missing Form 17 as the reason for a 50/50 split. But a Form 17 under section 837 is simply the way a couple elect out of the 50/50 rule where it already applies, as HMRC’s own manuals confirm. Here the rule never applied, so there was nothing to elect out of, and the absence of a form could not bring the income within it.
- Evidenced Who Was Entitled to the Income - Under section 271 of the Income Tax (Trading and Other Income) Act 2005, the person taxed on rental profits is the person receiving or entitled to them. The deed gave Mrs Menon the whole beneficial interest weeks before the first tenancy began; she managed the letting from the start and had declared the income.
- Dealt with the Loose Ends Before HMRC Could - A joint bank account, a mortgage on Mr Menon’s legal title and a box on the property pages ticked in error each looked like joint ownership. We explained, by reference to HMRC’s guidance, why none of them changed who was entitled to the income.
The Outcome: Enquiry Closed, No Tax Due
HMRC reviewed our response and wrote to confirm that the provisions requiring a Form 17 declaration did not apply to the couple’s situation.
The result:
| The Enquiry At a Glance | |
|---|---|
| Tax years in question | 2019/20 to 2024/25 (6 years) |
| HMRC’s starting position | Form 17 required; income split 50/50 |
| Our position | 50/50 rule never applied |
| Disclosure required | None |
| Additional tax due | £0 |
| Interest due | £0 |
| Penalty due | £0 |
| Enquiry status | Closed, no further action |
No disclosure, extra tax, or interest or penalties. Not because anything was conceded or negotiated away, but because the rental profit had been declared in full, every year, by the person entitled to it, and HMRC confirmed that no disclosure was needed. There was nothing for tax, interest or penalties to be charged on.
Why the 50/50 Rule Didn't Apply
Our position rested on three points, each drawn from the legislation and HMRC's own guidance:
- The 50/50 Rule Turns on Whose Names the Property is Held In - Section 836 of Income Tax Act 2007 applies to property "held in the names of" spouses or civil partners. That is a question of legal title, not of who owns the beneficial interest. A property registered in one spouse's name alone falls outside this section, as HMRC's guidance at TSEM9810 accepts.
- A Form 17 Only Matters Where the 50/50 Rule Applies - Where section 836 of Income Tax Act 2007 never applied, a missing Form 17 changed nothing.
- Rental Profits are Taxed on the Person Receiving or Entitled to Them - The deed gave Mrs Menon the whole beneficial interest, outright, before the first tenancy began. From then on, she was both the person entitled to the rent and the person who received it, and she declared all of it on her own returns. The deed, the title register and her returns documented each step.
What This Means If You’re in the Same Position
If you are married or in a civil partnership and you let a property, how it is held matters. Where it is in joint names and you own it in unequal shares, a Form 17 lets you be taxed on your actual shares rather than 50/50. It must be given to HMRC within 60 days of the declaration and applies only to income arising from the date it is made, so it cannot be backdated. Where it is in one name only, the 50/50 rule may not apply at all, but any transfer between spouses must be a genuine, outright gift, properly documented, and other rules can still decide who is taxed on the income.
And if you have received a letter from HMRC telling you a form should have been filed or that your income must be split differently, do not assume its starting point is right. We’ll review your title, your documents and your returns, work out where you genuinely stand, and respond to HMRC on your behalf.
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Disclaimer
Every enquiry turns on its own facts. This is one client’s outcome (names anonymised), not a prediction of yours. Whether the 50/50 rule and Form 17 apply to you depends on how your property is held, how any change of ownership was documented and how your income has been reported, and a favourable result is far from guaranteed. Nothing here is tax advice. Speak to us for advice on your own position.
