Tax Treatment of a Property Development Loan for a UK Limited Company

Two models: trading and investment

A company that develops property for sale is generally a property trader. Its profits arise when properties are sold and are subject to corporation tax as trading income. A company that develops or acquires property to hold and let is a property investor. Its profits arise from rents and, when properties are sold, from chargeable gains (though corporation tax applies to gains rather than capital gains tax for companies).

The distinction matters because it affects how costs — including loan interest — are treated in the tax computation. Your company's actual activities and intentions will determine which model applies. Take advice from your accountant if the classification is unclear.

Interest deductibility for property companies

Whether your company is a property trader or investor, loan interest is brought into the tax computation under the Loan Relationships rules. For a property trader, interest on development finance is typically deducted from trading profits. For a property investment company, interest on borrowings to acquire or develop let property is set against property income.

The practical effect is similar — interest reduces taxable profits — but the timing and mechanics can differ, particularly where a development spans multiple accounting periods or where interest is capitalised into the cost of the property during construction. Capitalised interest follows the asset into the tax computation and is typically deducted when the property is sold (for a trader) or depreciated/held (for an investor). Your accountant should confirm the correct approach for your specific project.

Capital allowances on property

Capital allowances are not available on the cost of land or on the main structure of a building. However, they may be available on fixtures and fittings within the property — items such as electrical systems, heating, plumbing, lifts, and fitted equipment that qualify as plant and machinery. For commercial property, a capital allowances review at acquisition or completion can identify significant qualifying expenditure.

The Annual Investment Allowance and writing-down allowances apply to qualifying fixtures in the same way as for other plant. The rules around apportioning expenditure between qualifying and non-qualifying items are complex; a specialist capital allowances survey is often worthwhile on larger projects.

Stamp Duty Land Tax and VAT on property

While not directly related to the loan, Stamp Duty Land Tax (SDLT) on property acquisition and VAT on construction costs are significant costs for any property company. SDLT is not deductible for corporation tax purposes when a property is held as an investment (it is added to the cost base for gain calculations), but may be deductible as a trading cost for a property dealer. VAT on construction can be complex, particularly where the Option to Tax applies. These are material issues requiring specialist advice before transactions complete.