Capital Gains Tax - Legend Fusions UK

Capital Gains Tax Accountants UK

Capital Gains Tax becomes fixed once the disposal is reported to HMRC. If costs, reliefs, or ownership history are handled incorrectly, the reported liability may increase. We review the disposal before submission, confirm the correct tax position, and prepare HMRC-compliant reporting.

Legend Fusions is the UK advisory brand evolved from Legend Financial & Tax Advisers, unifying tax, compliance, and advisory services under one international group.

Serving property owners, shareholders, and asset holders in London, Bolton, Milton Keynes and across the UK.

When to Report a Capital Gains Tax Disposal

Capital Gains Tax reporting is required when an asset is disposed of and a taxable gain arises. Reporting deadlines and tax treatment depend on the asset, ownership structure, and relief eligibility. Once reported, the position becomes difficult to amend.

Reporting is required following:

Sale of a second home, buy-to-let, or overseas property
Disposal of shares, investment portfolios, or crypto assets
Gains not fully covered by Private Residence Relief
Multiple disposals within the same tax year
Joint ownership where each owner must report their share
Claims for capital losses or correction of earlier disclosures

UK residential property disposals may require reporting within 60 days of completion. We advise on reporting requirements and applicable deadlines.

years experience

years advising on Capital Gains Tax reporting and HMRC disclosures before submission fixes the tax position.

Correcting or Amending Capital Gains Tax Disclosures

Capital Gains Tax reporting may require correction where costs, reliefs, or disclosures were incomplete or incorrectly reported. Once submitted, corrections require formal amendment. Early review helps limit further exposure.

We review and correct:

Self-Assessment returns where Capital Gains Tax requires amendment
UK Property Account filings requiring correction
Late or incomplete Capital Gains Tax disclosures
Calculations and reporting subject to HMRC query

We establish the correct treatment before amendment or resubmission.

How Capital Gains Tax Is Calculated and Reported

We calculate the gain using disposal value, allowable costs, and eligible reliefs before reporting to HMRC. Relief eligibility, loss offsets, and income level affect the final liability. Once reported to HMRC, the position cannot be revised without formal amendment.

Calculation and reporting include:

Establishing acquisition cost and ownership history
Identifying allowable expenditure and qualifying enhancement costs
Applying available reliefs and capital losses
Confirming use of the Annual Capital Gains Tax exemption
Determining the applicable Capital Gains Tax rate based on income
Preparing and submitting HMRC Property Returns or Self-Assessment disclosures

The gain and reporting must align with HMRC requirements and supporting records.

Reliefs That May Reduce Capital Gains Tax

Relief eligibility directly affects the final Capital Gains Tax liability. Missing or misapplying relief can increase the tax due and may require correction later. Relief eligibility must be established before reporting to HMRC.

Reliefs commonly reviewed include:

Principal Private Residence Relief based on residence and letting history
Business Asset Disposal Relief on qualifying business or share disposals
Capital losses available to offset current or future gains
Transfers between spouses or civil partners where permitted
Relief interaction across multiple disposals in the same tax year

Relief eligibility must be established before reporting to HMRC.

Capital Gains Tax Reporting Deadlines and HMRC Requirements

Capital Gains Tax must be reported to HMRC within strict deadlines. Missing a deadline triggers penalties and interest. Once reported, correcting the position becomes more difficult.

Key deadlines include:

Report UK residential property gains within 60 days of completion where tax is due
Report other gains through the Self Assessment tax return
Pay the tax due within HMRC deadlines
Correct errors promptly to limit penalties and HMRC challenge

We advise on reporting requirements and deadlines before submission.

How We Assess Your Capital Gains Position

We review how the asset was acquired, held, and disposed of to confirm the Capital Gains Tax position before reporting to HMRC. Ownership history, allowable costs, and relief eligibility determine the final liability.

Confirm ownership structure, including individual, joint, company, or trust ownership
Establish acquisition cost and qualifying enhancement expenditure
Confirm eligibility for Private Residence Relief and other available reliefs
Review letting periods or business use affecting relief treatment
Confirm eligibility for Business Asset Disposal Relief where applicable
Determine the applicable Capital Gains Tax rate based on income and disposal timing
Confirm HMRC reporting requirements, including 60-day property reporting
Apply available capital losses against the gain

What This Service Includes

This service includes calculating the gain, confirming relief eligibility, and preparing Capital Gains Tax reporting in line with HMRC requirements.

Confirm acquisition history, ownership structure, and disposal treatment
Establish allowable costs and qualifying enhancement expenditure
Confirm eligibility for Private Residence Relief and other applicable reliefs
Confirm eligibility for Business Asset Disposal Relief where relevant
Determine the applicable Capital Gains Tax rate based on income and disposal timing
Apply available capital losses against the gain
Prepare and submit Capital Gains Tax reporting to HMRC
Align reporting with Self Assessment and correct prior disclosures where required
Submit disclosures through HMRC Property Account or Self Assessment where applicable

How We Work with You

We review the disposal, calculate the gain, and prepare reporting in line with HMRC requirements. Ownership history, allowable costs, and relief eligibility determine the final liability.

Our review includes:

Review the Disposal Position

We examine ownership, asset history, and disposal details to establish the relevant tax treatment.

Establish the Gain and Relief Position

We confirm allowable costs, relief eligibility, and the correct taxable gain.

Confirm Reporting Requirements

We determine the applicable reporting route, deadlines, and tax treatment under HMRC rules.

Prepare and Support the Disclosure

We prepare and submit the required reporting and retain supporting records in line with HMRC requirements.

Scope of This Service

This service confirms the Capital Gains Tax position and prepares reporting before submission to HMRC. It does not include investment advice, asset selection, or regulated financial planning.

What Our Clients Say

“Legend Fusions has been an invaluable resource for both my personal and business tax needs, especially cross-border. Jeffery explains complex U.S.-Canada tax matters with clarity and handles every detail with precision. Always professional, responsive, and deeply knowledgeable with tax matters. I highly recommend Legend Fusions to anyone seeking trusted, stress-free tax guidance.”

Patience Adaobor

“Beenish is professional, patient, and explains bookkeeping clearly. She made me confident in managing my numbers and offers very fair pricing. Highly recommended for anyone seeking a knowledgeable advisor.”

Sarah Mitchell

“Appreciate the support and professionalism of the Legend Fusions team. Knowledgeable, responsive, and reliable for both personal and business tax matters.”

Vishnupriya Panchal

Related Tax & Advisory Services

HMRC Tax Investigations

Representation and advisory support during HMRC enquiries, compliance checks, and investigations.

Cross-Border Taxation

Advice on overseas income, residency status, and UK tax obligations.

R&D Tax Credits

Eligibility review and claims support for qualifying research and development activity.

EIS & SEIS

Guidance on investor reliefs, eligibility, and compliance requirements.

Personal Tax Planning

Structured review of income, gains, and relief interaction to manage exposure and optimise position.

Inheritance Tax

Planning support where estate exposure is identified.

Capital Allowances

Review and claims to ensure qualifying expenditure is identified and applied correctly.

Common Capital Gains Tax Situations We Handle

Where We Work

We work with clients across the UK through secure online consultations. In-person meetings are available by appointment at our London office.

Additional Capital Gains Tax Resources

Self Assessment deadlines explained

Documents needed for a tax return

Penalties for late tax filing

Frequently asked questions

When do you pay Capital Gains Tax in the UK?

Capital Gains Tax applies when a disposal results in a taxable gain that must be reported to HMRC. Disposal includes selling property, shares, or crypto. UK residential property with tax due must be reported within 60 days of completion.

Do you pay Capital Gains Tax on your main home?

You usually do not pay Capital Gains Tax on your main home if it qualifies for Principal Private Residence Relief. Letting periods, partial business use, or long absences can reduce the relief and create exposure.

How much is Capital Gains Tax in the UK?

For disposals made from the 2025/26 tax year onwards, Capital Gains Tax is charged at a flat rate of 18% for basic rate taxpayers and 24% for higher rate taxpayers. This applies to all assets, including residential property and carried interest.

Do you pay Capital Gains Tax on crypto in the UK?

Yes, you pay Capital Gains Tax on crypto when you sell, exchange, or convert tokens. HMRC applies same-day, 30-day, and Section 104 pooling rules to calculate gains.

How can you reduce Capital Gains Tax legally?

You can reduce Capital Gains Tax by using your annual exemption, offsetting allowable losses, transferring assets between spouses, and claiming reliefs such as Business Asset Disposal Relief where eligible.

What is the 60-day Capital Gains Tax rule?

The 60-day rule requires you to report and pay Capital Gains Tax on UK residential property within 60 days of completion if tax is due. This is separate from your Self Assessment return.

Do you need to report gains if they are below the allowance?

You may still need to report gains if total disposals exceed four times the annual exemption or if you are already required to file a Self Assessment tax return.

What happens if you miss a Capital Gains Tax deadline?

If you miss a Capital Gains Tax deadline, HMRC charges automatic penalties and interest. Continued delay increases the penalty and may trigger an enquiry into the calculation.

Review the Gain Before Reporting to HMRC

Capital Gains Tax reporting determines the final liability. We review the disposal, confirm the calculation, and prepare reporting before submission.