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Property Tax

Repairs vs Improvements Tax UK — What Landlords Can Deduct Against Rental Income

The tax distinction between repairs (deductible against rental income) and improvements (capital — not deductible against income but eligible to increase CGT base cost) — the entirety principle, initial repairs doctrine (Law Shipping; Odeon), and HMRC Property Income Manual guidance.

13 min readUpdated 8 June 2026Last reviewed: 17 May 2026income-taxproperty-incomerepairsimprovements

The Statutory Framework — Repairs Deductible; Improvements Capital

Under ITTOIA 2005 s.272, landlords can deduct expenses incurred wholly and exclusively for the purposes of their property business. Under s.33, no deduction is allowed for capital expenditure. A repair maintains the property in its existing state — revenue expenditure; deductible in the year incurred. An improvement enhances the property beyond its existing state — capital expenditure; not deductible against rental income but eligible to increase the CGT base cost (reducing the gain on future disposal). HMRC's Property Income Manual (PIM2020-PIM2055) applies these principles to common landlord scenarios. The same rules apply to companies under CTA 2009 ss.53-54.

  • ITTOIA 2005 s.33: no deduction for capital expenditure; the fundamental rule preventing improvement costs from being deducted against rental income
  • Repair = maintaining existing state: deductible in the year incurred; reduces rental profit immediately
  • Improvement = enhancing beyond existing state: capital; not deductible against income; increases CGT base cost for future disposal
  • HMRC PIM2020-PIM2055: detailed guidance on common scenarios; the starting point for any landlord expenditure analysis
  • Company landlords: CTA 2009 ss.53-54 applies the same principles; no deduction for capital expenditure against company property profits

The Entirety Principle — What Asset Is Being Repaired?

The 'entirety' is the relevant asset for the repair/improvement distinction. O'Grady v Bullcroft Main Collieries Ltd (1932) established that a new engine is a repair to the ship (the entirety), not a separate improvement. For a landlord, the entirety is typically the whole building. Replacing the entire roof to restore it to its function of keeping the building weathertight = repair to the building (entirety) — even if the new roof is better quality. Replacing single-glazed windows with double-glazed units = HMRC treats the upgrade element as capital improvement (beyond the existing single-glazing standard); replacing like-for-like double-glazing with double-glazing = repair. Remodelling, reconfiguration, or adding new rooms = capital improvement (altering the asset, not maintaining it).

  • Entirety = the whole building for a let property: the relevant asset; individual components are parts of the whole
  • New roof replacing old roof: repair to the building even if the new roof is of better quality — the function is maintained, not added to
  • Single to double glazing: HMRC treats the upgrade element as capital; like-for-like double-glazing replacement = repair
  • Remodelling and reconfiguration: altering the asset rather than maintaining it = capital improvement
  • Replacing whole component: raises improvement risk; the entirety principle helps argue repair where the component serves the same function

The Initial Repairs Doctrine — Newly Acquired Properties

Law Shipping Co Ltd v IRC [1923]: expenditure to bring a newly acquired asset into a usable state is capital, not deductible revenue repair. Odeon Associated Theatres Ltd v Jones [1971]: confirmed and applied to property — works on a dilapidated property acquired at a discounted price to bring it to a lettable standard are capital (the discounted price reflects the dilapidated state; the works restore the asset to the capital value paid). HMRC's PIM2030 applies the doctrine where: the property was unusable for the business when acquired; the purchase price reflected the dilapidated state; the works were necessary to make it usable. Initial repair costs add to CGT base cost rather than being deducted against rental income. To reduce the risk: let the property (even briefly, in its existing state) before commencing works.

  • Law Shipping [1923]: expenditure to put an asset into a usable state = capital, not revenue; the initial repairs doctrine
  • Odeon [1971]: property acquired at discount reflecting dilapidation; works to bring to lettable standard = capital
  • HMRC PIM2030 conditions: (1) unusable when acquired; (2) price reflected dilapidation; (3) works necessary for use — all three typically required
  • Capital consequence: initial repair costs increase CGT base cost; not deductible against rental income in the year of works
  • Mitigation: let the property briefly in its existing state before carrying out major works; breaks the 'unusable when acquired' argument

Common Expenditure — How HMRC Treats It in Practice

Practical application of the repair/improvement distinction: roof replacement (like-for-like) = repair; adding insulation or green roof = capital. Kitchen/bathroom like-for-like replacement = repair; upgrade in specification or layout change = capital. Boiler replacement with equivalent = repair; heat pump replacing gas system = capital; adding heating where none existed = capital. Rewiring to restore safe occupation = repair (where existing wiring failed); new damp proof course installation where none previously existed = capital improvement; restoration of a failed DPC = repair. Extensions and loft conversions = always capital. Replacement domestic items relief (RDIR under ITTOIA 2005 s.311A): from April 2016, landlords of furnished residential lets can deduct the cost of replacing domestic items (sofas; beds; white goods; floor coverings) on a like-for-like basis — replacing with a better item allows deduction only of the equivalent replacement cost.

  • Roof (like-for-like): repair; adding insulation or green roof = capital improvement
  • Kitchen/bathroom: like-for-like replacement = repair; specification upgrade or layout change = capital
  • Boiler equivalent replacement: repair; heat pump replacing gas system = capital; new heating system where none existed = capital
  • Extensions and loft conversions: always capital; additions to the building cannot be repairs
  • RDIR (ITTOIA 2005 s.311A): deduct cost of replacing domestic items like-for-like in furnished lets; upgrade excess is capital; applies from April 2016

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