Capital Gains Tax on Property: Do I Pay When Selling?

This is general information, not tax or legal advice. Capital Gains Tax rules change, and your position depends on how you used the property. Always check the current guidance on GOV.UK: tax when you sell your home and speak to a qualified tax adviser or solicitor before you exchange contracts. My Savvi Home is a property advertising platform. We do not give tax advice.

Quick answer

If you sell the home you have lived in as your only or main residence for the whole time you owned it, and you meet the Private Residence Relief conditions on GOV.UK, you usually pay no Capital Gains Tax on that sale. You are more likely to owe tax if you are selling a second home, a buy-to-let, or a property you never lived in as your main home.

What Capital Gains Tax is (in plain English)

Capital Gains Tax (CGT) is a tax on the profit when you dispose of an asset that has gone up in value. For property, that usually means looking at the sale proceeds against what you paid, minus allowable costs (for example some purchase costs, improvement costs, and selling costs), then applying reliefs and any annual exempt amount that applies to you. It is not a tax on the full sale price.

Official starting points:

• GOV.UK: Capital Gains Tax
• GOV.UK: Tax when you sell your home / Private Residence Relief

Selling your main home: Private Residence Relief

GOV.UK explains that you do not pay CGT when you sell (or otherwise dispose of) your home if all of the following apply:

• you have one home and you have lived in it as your main home for all the time you have owned it
• you have not let part of it out (having a lodger does not count as letting part of it out for this test)
• you have not used a part of your home exclusively for business (a temporary or occasional office usually does not count as exclusive business use)
• the grounds, including all buildings, are less than 5,000 square metres in total
• you did not buy it just to make a gain

If all of those apply, you automatically get Private Residence Relief and have no CGT to pay on that disposal. If any do not apply, you may have some tax to pay. Married couples and civil partners can only count one property as their main home at any one time.

Source: Private Residence Relief.

When homeowners often do pay CGT

Common situations where sellers need advice (this list is not exhaustive):

• Second homes and holiday homes that were never your only main residence
• Buy-to-let investment properties
• Inherited property you did not live in as your main home
• Periods when the property was let out or used solely for business
• Large grounds or mixed residential and non-residential use
• Living abroad with UK property interests (different reporting rules can apply)

GOV.UK's selling guide also flags CGT when the property is not your primary home or includes a lot of land: How to sell a home.

Allowable costs (high level only)

People often ask what reduces the gain. HMRC guidance covers acquisition costs, enhancement expenditure, and incidental costs of disposal. Keep invoices for improvements that added value (extensions, for example), not routine decoration alone. Do not invent deductions from a blog list. Your adviser maps your paperwork to the current rules.

Reporting and deadlines (do not wait for Self Assessment alone)

If CGT is due on a UK residential property disposal, HMRC has specific reporting rules and time limits. Those limits have changed in recent years. Do not rely on a blog for the current deadline.

Use GOV.UK: Report and pay Capital Gains Tax on UK property or ask your adviser before completion if you think tax may be due.

Missing a property CGT reporting window can mean penalties and interest. Diary the date with your accountant, not with a marketing platform.

Rates and annual exempt amount

CGT rates and the annual exempt amount change with Budgets. Quote today's percentage from a blog and it may be wrong tomorrow. Check GOV.UK or your adviser for the tax year that covers your completion.

What you can (and cannot) do on My Savvi Home

Listing on My Savvi Home is advertising only. You still handle viewings, negotiation, and the legal file yourself (or with professionals you instruct). We do not:

• calculate your CGT
• file anything with HMRC for you
• replace a solicitor, conveyancer, or tax adviser

Keeping more of the sale price by avoiding estate agent commission does not change HMRC rules. Tax is separate from how you marketed the property. A private sale on a flat monthly fee can improve your net cash after selling costs, but it does not create Private Residence Relief you did not already qualify for.

Worked scenarios (illustrative only)

These are orientation examples, not calculations.

Scenario A: You bought one flat, lived in it the whole time as your only home, never let it, no exclusive business wing, modest garden. You likely focus on confirming Private Residence Relief on GOV.UK rather than estimating a huge CGT bill.

Scenario B: You sell a buy-to-let you never lived in. Expect a taxable gain discussion, allowable cost review, and possible reporting deadlines after completion.

Scenario C: You lived in a house for years, then let it while you moved for work. Relief may be partial. Get advice early. Do not exchange assuming “I lived there once, so zero tax.”

Practical checklist before you accept an offer

1. Confirm whether the property was your only or main home for the whole ownership period.
2. Note any letting, business use, or periods living elsewhere.
3. Gather purchase documents, improvement invoices, and selling cost estimates for your adviser.
4. Read GOV.UK: tax when you sell your home and book advice if anything is unclear.
5. Instruct a solicitor or licensed conveyancer early so the legal pack is ready: How to sell a home.
6. If tax may be due, ask who will file and by when.

Private sale and tax: keep them separate in your head

1. Market truthfully (including a valid EPC when required).
2. Negotiate the price.
3. Let conveyancers run exchange and completion.
4. Let a tax adviser handle CGT if your facts are not a clean main-home disposal.

Mixing “I saved commission, so HMRC will be fine” is how people get surprises.

Records worth keeping in a folder now

Before you accept an offer, gather:

• purchase completion statement and price paid
• solicitor letters from when you bought
• invoices for capital improvements (extensions, loft conversions, significant structural work)
• evidence of dates you lived there versus any letting periods
• estimates of selling costs (conveyancing, listing fees, any agent fees)

Hand the folder to your tax adviser if the disposal is not an obvious main-home relief case. Waiting until after completion to hunt invoices is how people overpay or miss filing windows.

Remember: a lower selling cost from a zero-commission advert changes your net cash. It does not rewrite Private Residence Relief.

Bottom line

Most people selling the home they have lived in as their only main residence, and who meet Private Residence Relief, pay no CGT on that sale. Second homes, rentals, and mixed-use situations are different. Treat this page as orientation, then verify against GOV.UK and a qualified professional for your facts.

Not tax or legal advice. Rules differ for Scotland and Northern Ireland in places, and for people living abroad. Confirm on GOV.UK and with your adviser.