Rental Property Repairs vs Improvements at a Glance
Basis | Repair and maintenance (revenue) | Improvements (capital) |
|---|---|---|
Definition | Work that keeps the property in its existing condition, with its function and character broadly unchanged | Work that adds to or enhances the property, changes its function or adds new structure |
Tax treatment | Deducted from rental income in the tax year the cost is incurred | Not deducted from rental income; added to your base cost to reduce CGT when you sell |
Examples | Fixing a leaking roof, replacing broken tiles | A rear extension, a loft conversion |
How Does HMRC Decide If Spend Is Capital or Revenue?
For rental property repairs vs improvements, HMRC has no single bright-line rule. PIM2030 says it is largely a question of fact and degree whether spending on a property leads to an improvement, and the Business Income Manual (BIM35430) points back to the practical and business test: what was the expenditure calculated to achieve? The size of the bill does not settle it.
These four questions are a practical checklist built from PIM2030 and the Business Income Manual. They are not a statutory test.
Your checklist
What is the asset?
Did you repair part of it or replace all of it?
Does it do the same job as before?
Did anything significant change?
Using newer or modern materials does not make property work a capital improvement on its own. PIM2030 confirms that expenditure remains allowable revenue spending where any apparent improvement arises solely because the replacement materials are broadly equivalent modern substitutes. Examples include replacing lead pipes with copper or plastic piping, or wooden beams with steel girders.
The position changes if the new materials are designed to increase capacity or performance significantly, such as steel girders built for heavier loads or pipes engineered for higher pressure or heat. That kind of expenditure is likely to be capital. Where the improvement is so small that it is incidental to a repair, and nothing else points to capital, the entire cost is revenue.
What Counts as a Repair on a Rental Property?
HMRC treats a repair as restoring an asset by replacing parts of it. Restoring a worn or dilapidated property is generally deductible as a revenue expense, unless you bought it unfit to let or at a price reduced for its dilapidated state. Broadly equivalent modern materials still qualify. Replacing freestanding domestic items such as carpets falls under Replacement of Domestic Items Relief instead. Routine upkeep such as treating damp and rot, repointing and mending broken doors also counts.
Job | Repair | Improvement |
|---|---|---|
Roof | Replacing slates, flashing or gutters; patching a leak | Changing the roof type, or adding a floor or loft room |
Heating | Replacing a failed boiler with a modern equivalent | Installing central heating where there was none |
Windows | Replacing single glazing with double glazing | Adding a conservatory or extension |
Kitchen | Replacing worn units or worktops with broadly equivalent ones | Changing the layout or fitting a significantly higher specification |
Bathroom | Replacing a damaged suite with a comparable one | Adding a bathroom where there was none |
Decorating | Painting, plastering and deep cleaning | Redecoration that forms part of a significant capital upgrade |
Outside | Mending fences, gutters and paths | Building a car park or a new access road |
Use the table as a first sort. Borderline jobs turn on fact and degree, so keep the quote, the invoice and before-and-after photographs for anything you could argue either way.
What Counts as an Improvement, and Where Does Relief Go?
Capital spending covers anything that adds to or improves the property, any new building erected after letting began, and the refurbishment of a property bought derelict or run down. Alterations so extensive that they amount to reconstruction are capital too, and only normal repairs to a preserved part of the old building stay revenue.
Replacing a whole roof is the most common grey area. If the roof counts as a subsidiary part of the building, replacing it with equivalent materials can still be a repair, while a different roof type or added capacity points to capital. Identify the asset first, then apply the four questions above.
You cannot deduct capital expenditure from rental income, and PIM2030 confirms there are no capital allowances for the cost or depreciation of residential property. Instead, enhancement spending is added to your base cost under Section 38(1)(b) of the Taxation of Chargeable Gains Act 1992 (TCGA 1992 s38(1)(b)) and reduces your gain when you sell, provided the enhancement is still reflected in the property at disposal. The relief therefore arrives later, at CGT rates, not against current rental profit.
Does the cash basis change the treatment?
The cash basis is the default for most unincorporated UK landlords, but it does not remove the line between repairs and improvements. Section 33A of the Income Tax (Trading and Other Income) Act 2005 (ITTOIA 2005 s33A) and PIM1095 exclude capital expenditure on land and buildings from cash basis deductions, so the cost of acquiring, building or improving a building is still not deductible. The repair-or-improvement line therefore matters just as much under the cash basis as under accruals accounting
How Do You Split Repairs and Improvements on One Invoice?
PIM2030 confirms that separate repairs carried out alongside capital works remain allowable. You may apportion total expenditure on a reasonable basis to estimate the repair element, and an itemised breakdown on the contractor’s bill is a sensible starting point. The split must be fair, because HMRC can review and adjust the figures if capital spending has been misdescribed as deductible repairs.
Ask your contractor to itemise each task and price any capital work separately. A single description such as “bathroom and kitchen refit” leaves you defending an estimated split instead of showing which costs restored existing features and which created new ones.
Base the split on what was actually done. BIM35465 says relief depends on the work performed, not on hypothetical repair costs, so split the real invoice lines between repair and capital items.
One exception applies. Where a significant structural or material improvement occurs, PIM2030 treats the redecoration that follows, and making good damage to decorations, as part of the capital cost, not as a deductible repair.
Are Repairs on a Newly Bought Run-Down Property Deductible?
Not automatically. According to PIM2030, buying a property shortly before you repair it does not make the repair capital by itself. The cost turns capital when the purchase coincides with at least one further factor:
Unfit to let
The property could not be used in your rental business until the work was done, or could not stay let without repairs soon after you bought it.
A price cut for condition
You paid substantially less because the property was run down. A price that only reflects ordinary wear and tear, such as the gap between exterior painting cycles, does not block the deduction.
A commitment to restore
You agreed to put the property right, for example under a lease granted on terms that you refurbish it.
A single factor alongside the purchase can be enough, so all three need not be present. The reasoning is simple: buying a property in good condition is capital spend, so buying a dilapidated one and bringing it up to standard is capital spend too. Keep the survey, the asking price, the price you paid and photographs from completion as evidence of the condition at purchase.
Worked Example: One Invoice, Two Tax Treatments
A basic-rate taxpayer lets a two-bedroom flat in England and receives one contractor’s invoice dated 14/05/2026 for £13,650. Tested line by line, the invoice splits into £6,430 of repairs and £7,220 of capital spend.
Invoice line | Amount | Why |
|---|---|---|
Revenue: deducted from rental income this year | ||
Replace failed boiler with an equivalent modern combi | £2,400 | Same job as before, modern equivalent |
Repaint hallway and lounge | £780 | Ordinary decorating, separate from the capital work |
Replace single glazing with double glazing in two windows | £1,900 | Named as a repair example in PIM2030 |
Replace damaged bathroom suite with a comparable one | £1,350 | Like-for-like replacement |
Revenue subtotal | £6,430 | |
Capital: added to base cost | ||
Build a new shower room in the spare bedroom | £6,800 | Creates a room that did not exist |
Decorate the new shower room | £420 | Forms part of the capital work |
Capital subtotal | £7,220 | |
Invoice total | £13,650 | |
At a 20% basic rate, the £6,430 saves £1,286 of income tax this year. The £7,220 goes into your base cost and waits for a sale, so keep the itemised invoice with your property records.
What If the Invoice Is Classified Differently?
Approach | Deducted this year | Income tax saved at 20% | Problem |
|---|---|---|---|
Split correctly | £6,430 | £1,286 | None |
Everything as repairs | £13,650 | £2,730 | Overstates the deduction by £7,220 and understates your tax by £1,444, which HMRC can recover with interest |
Everything as capital | £0 | £0 | Gives up £1,286 of relief this year, and the £6,430 of repair costs may not be recoverable on a sale |
These figures are illustrative. Your own position depends on your specific income and expenses.
Do Furniture and Appliances Follow the Same Rules?
Freestanding domestic items in a residential let sit outside the general building repair-or-improvement test and are instead governed by Replacement of Domestic Items Relief under Section 311A of the Income Tax (Trading and Other Income) Act 2005 (ITTOIA 2005 s311A) and HMRC guidance (PIM3210). The relief applies to spending on or after 6 April 2016. It allows individual landlords to deduct the cost of replacing furniture, furnishings (such as carpets and curtains), household appliances and kitchenware. It excludes the first purchase of an item when furnishing a property, and fixtures that become part of the dwelling.
Landlords who elect to use the £1,000 property allowance instead of deducting actual expenses cannot claim Replacement of Domestic Items Relief in the same tax year (PIM4473). Under s311A and PIM3210, the allowable deduction is the replacement item’s cost plus disposal and installation expenses, less any proceeds from selling the old item. It is capped at the cost of a reasonable modern equivalent where the replacement is an upgrade.
How Do You Record Repairs and Improvements for MTD?
Making Tax Digital (MTD) for Income Tax applies from 6 April 2026 to landlords whose qualifying income on their 2024/25 return was over £50,000. Each digital record captures the amount, the date and the category. Repairs and maintenance is one property expense category, so a capital item should not sit inside it. Log each invoice line separately and tag capital lines as capital.
For a contractor invoice covering both capital and revenue work, HMRC guidance permits recording either the allowable revenue element alone or entering the full invoice figure and applying a disallowable adjustment before submitting your update. Keep itemised invoices and supporting digital evidence for at least five years after the 31 January submission deadline for the relevant tax year.
Mistakes in Rental Property Repairs vs Improvements
Trusting the invoice label. A line marked "repairs" does not make it a repair. HMRC looks at what the work actually did.
Deducting the refit of a run-down purchase. Works needed to make a dilapidated property fit to let are often capital.
Leaving a mixed invoice unsplit. One lump sum leaves you defending an estimate if HMRC asks.
Capitalising everything to be safe. An improvement that is incidental to a repair does not change the treatment of the whole job.
Treating every replacement as an improvement. A broadly equivalent modern item is usually still a repair.
Discarding improvement invoices. You need them to support your base cost when you sell.
What to Do Now
Conclusion
If you have a contractor's quote on the table, or an invoice you have not yet coded, the cheapest time to settle rental property repairs vs improvements is before the work starts. Agree an itemised quote now and the invoice will show you the split without any estimating.
Getting it wrong costs you in both directions. Treat an improvement as a repair and you claim relief that HMRC can take back with interest. Treat a repair as an improvement and you wait years for relief you were entitled to this year.
The work is smaller than it looks: split each invoice by job, test each line once and record it in the right category. If you would rather not do that in a spreadsheet, the next step is below.
