Jointly owned property and the £50,000 Making Tax Digital threshold

Two numbers decide it, and both are misread

The question of whether a landlord is inside Making Tax Digital for Income Tax turns on a single figure, the £50,000 qualifying-income threshold, and that figure is misread in two ways that pull in opposite directions. The first is that it is measured on gross income rather than profit, which catches landlords who assume their modest bottom line keeps them out. The second is that, for a jointly owned property, it is measured on each owner's share rather than on the whole rent, which keeps out co-owners who assume the full figure counts against them. Getting both right is the difference between preparing for quarterly digital reporting and wrongly signing up for it, or wrongly ignoring it.

Neither point is a matter of interpretation. Both come straight from HMRC's guidance on how qualifying income is worked out, and both can be applied to the numbers of a real portfolio in a few minutes. This note does that, and then addresses the planning question that follows, which is whether income can be arranged between joint owners to keep each below the line, and what that actually costs.

Gross, not profit

Qualifying income is the total income from self-employment and property before expenses are deducted. It is turnover, not taxable profit, assessed by reference to the Self Assessment return for the previous tax year. Employment income, a share of partnership profit, dividends, and pensions do not count towards it.

The consequence is blunt. A landlord who receives £55,000 in rent and incurs £40,000 of allowable costs has a taxable profit of £15,000 but qualifying income of £55,000, and is over the threshold. The mortgage interest, the letting-agent fees, the repairs, the insurance, none of it reduces the figure that decides whether the regime applies. A profitable-looking business and a marginal one are treated identically if their gross receipts are the same. This is why the first step for any landlord is to look at the top line, not the bottom line, of the property pages.

Your share, not the whole rent

The second figure is the one that matters for co-owners. Where a property is jointly owned, only the individual's share of the gross income counts towards their qualifying income, not the entire rent from the property.

HMRC's own worked example makes the point. Two people jointly own a property that generates £50,000 of income, they share it equally, and neither has any self-employment. Each of them has qualifying income of £25,000, and each is below the £50,000 threshold. The property produces £50,000, but no single person is treated as having £50,000, because the regime looks at the person, not the building. Two siblings, two friends, or two unmarried co-investors in that position are each outside the regime on that property alone.

There is a practical wrinkle worth noting. If a co-owner does not see the gross figure and is only told their share of the income after expenses have been deducted, HMRC will assess that net figure as their qualifying income. For most joint owners, though, the relevant number is their share of the gross rent.

The share is added to everything else

The share of a jointly owned property is not looked at in isolation. It is added to the individual's other qualifying income, meaning their solely owned property income and their self-employment turnover, and it is the combined figure that is tested against the threshold.

Take a person whose half of a jointly owned portfolio is £35,000 of gross rent, and who also runs a sole trade with £20,000 of turnover. Neither figure reaches £50,000 on its own. Together they are £55,000 of qualifying income, and that person is within Making Tax Digital for Income Tax. The joint-ownership share does not sit in its own box; it aggregates with everything else the person receives from trading and property. A landlord who is comfortably under the threshold on each individual source can still be over it in total, and the aggregation is exactly where people miscount.

The married-couple default, and the Form 17 question

For a married couple or civil partners, there is a rule that overrides the actual ownership, and it is the point most likely to defeat a plan to sit below the threshold.

Where spouses or civil partners who live together own property jointly, the income is split 50/50 between them for tax by default, under section 836 of the Income Tax (Trading and Other Income) Act 2005, regardless of the size of their respective legal or beneficial shares. A couple who own a property 90/10 are still taxed 50/50 on its income unless they act. This is the joint-property rule, and it means a couple cannot simply assert an unequal split to keep one of them under the qualifying-income threshold.

The route to being taxed on unequal shares is a Form 17 declaration, the declaration of beneficial interests in joint property. It allows spouses or civil partners to be taxed in line with their actual beneficial ownership rather than 50/50, but only where the beneficial ownership is genuinely unequal, and the declaration must reflect the true position. A Form 17 that records a 90/10 split has to be matched by a real 90/10 beneficial interest, evidenced, and it fixes the split for all income-tax purposes, not just for the threshold. It cannot be switched on to duck Making Tax Digital and switched off again.

Arranging ownership is a transaction, not a label

This is where the planning has to be honest. Moving beneficial ownership between spouses so that the income, and the qualifying-income figure, follows the new shares is a real transaction with real consequences, and it is not a free way out of quarterly reporting.

Changing who beneficially owns a share of a let property engages a set of rules that do not switch off for convenience. Where value is directed to a spouse while the transferor keeps a benefit, the settlements rules can attribute the income back. Transferring a beneficial interest can carry stamp duty land tax, where the interest transferred is linked to a mortgage the transferee assumes, and it is a disposal for capital gains tax, although transfers between spouses living together are generally on a no-gain-no-loss basis. The interaction of beneficial ownership, the settlements code and the family structure is the same territory examined in the analysis of family investment companies and trusts, and it rewards the same discipline: the structure has to be real to be effective.

None of this makes rearranging ownership wrong. For a couple whose ownership genuinely is, or genuinely should be, unequal, a Form 17 declaration that records the real position is legitimate and can have the incidental effect of keeping one spouse below the threshold. What does not work is a paper split created solely to avoid Making Tax Digital, because the default 50/50 rule stands until a genuine unequal beneficial interest is put in place and declared.

Working the threshold, in order

For a co-owner trying to establish their position, the sequence is short and mechanical.

• Start with gross, not profit. Take the total rent and other receipts before any expenses.
• Take your share. For a jointly owned property, count only your share of that gross figure. For a married couple or civil partners, that share is 50/50 by default unless a valid Form 17 declaration records a genuine unequal beneficial interest.
• Add your other qualifying income. Combine the share with your solely owned property income and your self-employment turnover. Partnership profit shares, dividends, employment and pensions are excluded.
• Compare the total to the threshold for the year. £50,000 from April 2026, falling to £30,000 from April 2027 and £20,000 from April 2028, so a position that is under the line now may not stay under it.

For a non-resident co-owner, only the UK-taxable income enters the calculation, and the residence-page deferral examined in the guide to Making Tax Digital for the non-resident landlord may apply on top of the threshold analysis. And where the answer is that a portfolio is comfortably over the line, the separate question of whether to hold it personally at all is the subject of the note on incorporating a property portfolio.

The threshold reads gross, and it reads your share. It does not read the split you would prefer; it reads the one you can prove.

Frequently asked questions

How is the £50,000 Making Tax Digital threshold calculated for jointly owned property?

Only your share of the property's gross income counts towards your qualifying income, not the whole rent. HMRC's example is a property generating £50,000 held equally by two people, which gives each of them £25,000 of qualifying income, so neither is over the threshold on that property. Your share is then added to your other self-employment and property income to test the total against the threshold.

Is Making Tax Digital based on rental profit or gross rent?

Gross rent. Qualifying income is measured on turnover before expenses, not on taxable profit, so mortgage interest, agent fees and repairs do not reduce it. A landlord with £55,000 of rent and £40,000 of costs has a £15,000 profit but £55,000 of qualifying income, and is within the regime. Always test the top line of the property pages, not the profit figure.

If my spouse and I jointly own property, how is the income split for Making Tax Digital?

By default, 50/50. Under section 836 of the Income Tax (Trading and Other Income) Act 2005, married couples and civil partners who live together are taxed equally on income from jointly owned property, whatever their actual shares, and that 50/50 figure is what feeds each person's qualifying income. You can only be taxed on unequal shares by making a Form 17 declaration that reflects genuine unequal beneficial ownership.

What is Form 17 and can it keep me under the Making Tax Digital threshold?

Form 17 is the declaration of beneficial interests in joint property, which lets spouses or civil partners be taxed on their actual unequal beneficial shares instead of 50/50. It can have the effect of keeping one spouse's qualifying income below the threshold, but only where the beneficial ownership is genuinely unequal and the declaration reflects the true position. It fixes the split for all income-tax purposes, and cannot be used as a paper allocation to avoid the regime.

Does my share of joint property count with my other income?

Yes. Your share of jointly owned property income is added to your solely owned property income and your self-employment turnover, and the combined figure is tested against the threshold. Someone with £35,000 as their half of a joint portfolio and £20,000 of self-employment turnover has £55,000 of qualifying income and is within the regime, even though neither source alone reaches £50,000.

Does my letting agent deducting expenses change my qualifying income?

It can change the figure HMRC assesses. Qualifying income is normally your share of the gross rent, but if you jointly own a property and are only given notice of your share of the income after expenses have been deducted, HMRC will assess that net figure as your qualifying income. Most co-owners should work from their share of the gross rent unless they only receive a net figure.

Does foreign rental income count towards the £50,000 threshold?

It depends on your residence. A UK resident counts both UK and foreign property income towards qualifying income. A non-resident counts only income declared on their UK Self Assessment return, so foreign property income that is not on the UK return does not count. This is set out further in the guide to Making Tax Digital for the non-resident landlord.

Can I split rental income with my spouse just to avoid Making Tax Digital?

Not by a paper split alone. Married couples and civil partners are taxed 50/50 on jointly owned property by default, and moving to an unequal split requires genuine unequal beneficial ownership recorded on a Form 17. Rearranging beneficial ownership is a real transaction that engages the settlements rules and can carry stamp duty and capital gains consequences, so it is legitimate planning only where the ownership genuinely changes, not a costless way to stay under the threshold.