Repairs versus improvements: classify portfolio costs on the evidence

Separate repairs from capital improvements using HMRC guidance, itemised invoices and a consistent review process across your rental portfolio.

A repair and an improvement can appear on the same contractor’s invoice but receive different tax treatment. HMRC generally distinguishes restoring an existing asset from improving or reconstructing it. For portfolio landlords, the decision should follow the scope of the work and the supporting evidence—not the supplier’s invoice label or the size of the bill. [1]

Describe what changed

A useful invoice explains the work, the part of the property affected and what existed beforehand. “Refurbishment” alone does not establish whether the expenditure is revenue or capital.

HMRC treats additions and improvements as capital expenditure, which cannot be deducted as ordinary repairs when calculating property-business profit. Work restoring a worn asset can be a revenue repair, subject to the circumstances. [1]

Do not treat a newer material as proof of an improvement. HMRC recognises that replacing old materials with broadly equivalent modern ones can remain a repair. Its guidance includes replacing single glazing with double glazing where the functionality and character remain broadly the same. [1][3]

A whole roof is not automatically a whole asset

The relevant question is what constitutes the asset, or “entirety”. Replacing part of a building is not automatically replacing the building itself. A roof replacement therefore needs assessment in context; it should not be labelled capital simply because all the roof covering was replaced. Reconstruction or a material improvement can change the analysis. [1][2]

This distinction matters when reviewing larger maintenance projects. Cost alone is not the test.

Review acquisition work separately

Repairs made soon after purchase are not automatically capital. HMRC says timing alone does not decide the issue. Relevant factors include whether the property was fit for business use, whether its price was substantially reduced because of dilapidation, and any commitment to restore it. Normal wear and tear reflected in a purchase price does not, by itself, prevent a repair deduction. [1]

Keep the survey, schedule of works and purchase-related correspondence where they explain the condition and purpose of the work.

Split mixed work on a supportable basis

HMRC allows a reasonable allocation between separate capital works and revenue repairs. An itemised contractor’s bill can support that allocation, but describing capital work as a repair does not make it deductible. [1]

A practical review process is to:

1. Record the original condition and the completed work. 2. Obtain a breakdown for distinct jobs. 3. Identify genuine repairs separately from additions or reconstruction. 4. Refer uncertain treatment to your accountant before finalising the return. 5. Retain capital invoices too; do not assume they automatically qualify for another tax relief.

Use the capital versus revenue expense checker as a starting point, not a tax determination.

LetSentry lets you record expenses and attach invoices against individual properties. That keeps the evidence together for professional review. Explore buy-to-let portfolio record-keeping.

Official sources

1. HMRC PIM2030: repairs—is it capital? 2. HMRC BIM46910: identifying the entirety 3. HMRC PIM2025: examples of repairs

General information for landlords with property in England, not individual tax or legal advice. Classification depends on the facts of the work.

Sources: - HMRC PIM2030: repairs—is it capital? (accessed 2026-09-21): https://www.gov.uk/hmrc-internal-manuals/property-income-manual/pim2030 - HMRC BIM46910: identifying the entirety (accessed 2026-09-21): https://www.gov.uk/hmrc-internal-manuals/business-income-manual/bim46910 - HMRC PIM2025: examples of repairs (accessed 2026-09-21): https://www.gov.uk/hmrc-internal-manuals/property-income-manual/pim2025

Published: 2026-09-25.

Last reviewed: 2026-09-21.

General summary; not legal advice.