EPC Upgrades, Personal Loans & Rental Property Tax: What Landlords Need to Know

April 4, 2026 • 3 min read

If you're a landlord considering energy efficiency improvements to your rental property, whether to meet incoming EPC requirements or simply to future-proof your investment, it's important to understand how HMRC treats these costs. Many landlords assume that using a personal loan or financing these upgrades makes the costs tax-deductible. Unfortunately, that's not how it works.

Here's a clear breakdown of what you can and cannot claim, and why it matters.

1. Personal Loans and Tax Deductibility

Taking out a personal loan to fund property works does not make those costs deductible from your rental income. The loan amount itself is not a tax-deductible expense. What may qualify is the interest you pay on that loan, but only under specific conditions.

Key points:

Interest on a personal loan may qualify for the basic-rate tax credit (currently 20%), but only if HMRC accepts that the borrowing was wholly and exclusively for the rental business.
This is not a full deduction from profits; it is a credit applied at the basic rate only.
If you own your rental property through a limited company, finance costs are treated more flexibly. For personal (individual) landlords, interest relief has been restricted since April 2020.

2. Capital Improvements vs Maintenance: Why the Distinction Matters

HMRC draws a clear line between maintenance/repair costs (which can be deducted from rental income) and capital improvement costs (which cannot).

Maintenance (tax-deductible now):

These are costs that restore the property to its original condition, not improve it. Examples include:

a) Repairing leaks or fixing broken windows

b) Like-for-like replacements of existing features

Capital improvements (not deductible now):

These are costs that enhance or upgrade the property beyond its original standard. Most EPC-related works fall into this category:

a) New or improved insulation

b) Energy-efficiency enhancements

c) Modern double glazing (unless it is a true like-for-like replacement)

3. EPC Works: What HMRC Says

EPC improvements are generally treated as capital expenditure. This means:

You cannot deduct them from your rental income in the year they are incurred.
However, they can typically be added to the property's cost basis (the amount you originally paid, plus qualifying improvement costs).
This reduces your Capital Gains Tax (CGT) liability when you eventually sell the property.

So while there is no immediate tax relief, these costs are not entirely lost; they simply come into play later.

Start with people you know, and ask for referrals from fellow business owners, friends and family.

Summary: What This Means for Landlords

A personal loan does not make EPC costs immediately tax-deductible.
Maintenance costs can be deducted from rental income; improvement costs cannot.
Interest relief on borrowing is restricted to a basic-rate credit, not a full deduction from profits.
Capital improvement costs can reduce CGT when the property is eventually sold.

So while there is no immediate tax relief, these costs are not entirely lost; they simply come into play later.