Paper Version of Capital Gains Tax on UK Property Return

If you’ve sold a property in the UK and received a paper return from HMRC, you’re not alone. Whilst many of us have moved online, HMRC still issues paper versions of the Capital Gains Tax Return (form SA302) to certain taxpayers. Whether you’ve recently sold a buy-to-let, inherited property, or made a gain on a second home, understanding how to complete this paper form correctly is essential. Filing incorrectly – or missing the deadline – can result in penalties and interest charges. Here at Severn Accounting in Worcester, we’ve guided numerous clients through this process, and we’ve put together this guide to help you navigate it with confidence.

What is the Paper CGT Return?

The paper Capital Gains Tax Return is HMRC’s official form for reporting chargeable gains on assets sold during the tax year. If you’ve disposed of UK property (or overseas property if you’re UK resident), you’ll likely need to complete this form alongside your Self Assessment tax return. The form captures essential details: what you sold, when you sold it, how much you paid for it, and how much you received. From these figures, your chargeable gain is calculated, and the appropriate tax is due.

Unlike other Self Assessment forms, the CGT return requires detailed calculations. This is particularly important for property, where your acquisition costs, improvement expenditure, and disposal costs all affect your final liability.

Understanding Current CGT Thresholds and Rates (2024/25)

Before you begin, it’s worth knowing where you stand. For the 2024/25 tax year, the Capital Gains Tax annual exemption is £3,000. This means you can make gains up to this amount without paying any CGT. Any gains above this threshold are taxable.

For residential property, however, the picture is more complicated. From 6 April 2020, HMRC introduced new rules: gains on residential property are taxed at 20% for higher-rate taxpayers and 10% for basic-rate taxpayers. Non-residential property still benefits from the standard CGT rates of 20% and 10%.

If your property sale doesn’t qualify for the main residence exemption (sometimes called principal private residence relief), you’ll likely fall into the residential property category – even if it’s a buy-to-let or second home.

Completing the Paper Form: Key Sections

Section 1: Asset Details

Start by describing the property clearly. You’ll need the address, the date you acquired it, and the date you disposed of it. This might sound straightforward, but precision matters – HMRC cross-references these details against Land Registry records.

Section 2: Calculating Your Gain

Here’s where accuracy is crucial. You’ll need:

• Acquisition cost: What you paid for the property, plus any fees (solicitor’s costs, survey fees, stamp duty land tax where applicable).
• Enhancement expenditure: Any money spent on improvements that added value (not repairs or maintenance, which aren’t allowable). Replacing a broken window doesn’t count; installing a new kitchen or conservatory typically does.
• Disposal costs: Solicitor’s fees, estate agent commission, and advertising costs incurred when selling.

Subtract these from your sale proceeds to arrive at your chargeable gain.

Section 3: Reliefs and Exemptions

This is critical. Have you owned the property as your main residence for the entire period? If yes, claim principal private residence relief, which could eliminate your entire tax bill. Did you own it jointly? The form allows you to split the gain accordingly. Were there any periods when you let it out? You may need to apportion relief.

Common Mistakes to Avoid

We regularly see taxpayers understating their acquisition costs by forgetting to include professional fees. Others overstate their enhancement expenditure by including repairs. Be meticulous – keep receipts and invoices for everything.

Another frequent error: missing the Self Assessment deadline. If you sell property, you must notify HMRC within 60 days of completion, and your tax return must be filed by 31 January following the tax year end. Miss this, and you’ll face automatic penalties.

Next Steps

If the property sale resulted in a loss, you can still file the form – losses can be carried forward to offset future gains. However, residential property losses cannot be used against other income.

Filing a paper CGT return requires attention to detail and a solid understanding of current reliefs and thresholds. If you’re unsure at any point, it’s worth seeking advice. A small investment in professional guidance now could save you significant money – and stress – later.

For tailored advice, contact Severn Accounting — we’re here to help.