A repair maintains or restores what was there; an improvement can be capital expenditure. Real projects can contain both. Keep itemised invoices, before-and-after descriptions and the property history so the correct parts can be assessed rather than treating the whole bill as one expense.
Describe what changed
A repair generally restores something, while an improvement may add something beyond that. Give the accountant the before-and-after facts, not just a label such as “renovation”. Keep itemised invoices and explain whether several kinds of work were bundled into one bill.
For example, repairing storm damage and building a new extension are different projects. A replacement involving modern materials can need a more careful review than simply deciding that all new items are improvements.
Include the timing and property history
Explain when you bought the property, its condition at purchase and whether it was being let. Work before the first tenant or as part of a larger project may need particular attention.
Keep records even when a cost is not deducted from annual rental income. It may still be relevant to a later calculation, depending on the facts.
Do not force every invoice into one category
Ask the accountant whether parts of the work should be treated separately. A reasonable allocation needs evidence rather than a convenient percentage chosen at the end of the year.
Example: an itemised project
A single contractor invoice may include repairs, replacement items and an extension. Ask for a breakdown and explain the work, rather than entering the entire invoice under whichever category sounds most favourable.
Is a replacement always a repair?
Not automatically. The nature of the work, what was replaced and the broader circumstances need consideration. Modern materials do not by themselves answer every capital-versus-revenue question.
What if the cost is not deducted this year?
Keep the records anyway. A cost that is not an annual rental expense may be relevant to another calculation, depending on the circumstances. Do not discard invoices merely because they were excluded from this year’s rental-profit figure.
Next step: Share itemised invoices and a short description with TaxSimba before approving the property figures in your return.
Describe the job, not just the invoice label
Replacing damaged roof tiles to restore the existing roof and adding a new extension are different projects. One invoice can include repairs and improvement work, so ask for the cost breakdown. A modern equivalent replacement is not automatically an improvement merely because the old product is no longer sold. The actual work and property history matter.
Check the home nation used for your tax calculation
Tell the accountant whether you live in England, Scotland, Wales or Northern Ireland, and about any moves during the tax year. Scottish rates differ for wages, pensions and most other taxable income; savings and dividends use UK rules. Welsh rates are set separately. Use the rules for the relevant year and your actual taxpayer status.
See Scottish Income Tax and Welsh Income Tax. These differences do not make a London address or an England-only earnings example appropriate for everyone.
Separate one building project into its real parts
Illustrative preparation example.
A contractor invoice covers repainting, replacing a broken fitting and adding an extension. Ask for the work to be itemised, with before-and-after descriptions. A single payment can contain different kinds of expenditure that should not be forced into one expense label.
Check: Can the cost of each distinct repair, replacement or improvement be evidenced?
| Check | Practical action |
|---|---|
| What was repaired, replaced or added? | Provide before-and-after descriptions and itemised costs. |
| When and why was the work done? | Explain purchase condition, letting status and any wider project. |
| Is part of the invoice capital? | Keep that evidence for the appropriate future calculation rather than forcing it into annual expenses. |
Does a supplier calling work a repair settle the tax treatment?
No. The actual work and circumstances matter. Give the accountant enough detail to assess them.
Do modern replacement materials automatically mean improvement?
No. A modern equivalent can require a more nuanced assessment. Describe what changed in function, capacity and quality.
Download a checklist for this guide
- Collect itemised invoices and payment records.
- Describe what existed before and after.
- Record purchase and letting history.
- Identify wider projects and mixed invoices.
- Retain capital-cost evidence separately.