Accounting

Capital Gains Tax · South West London

Capital gains tax returns in Castelnau

If you have made a disposal from Castelnau this year, the question is not just how much tax but what reliefs apply: private residence relief on a former home, business asset disposal relief on a company sale, the losses you forgot about from years ago. We work through all of it for clients across South West London and file online, nothing submitted until you approve.

from £149 · fixed, per report

Next deadlines

  • UK residential property disposals: CGT return and payment within 60 days of completion
  • UK residential property disposals: CGT return and payment within 60 days of completion
  • Online Self Assessment filing deadline and balancing payment due
  • UK residential property disposals: CGT return and payment within 60 days of completion

Who this is for

Capital Gains Tax for Castelnau

Individuals and trustees in Castelnau disposing of assets: landlords selling a rental or a former home, investors selling shares or funds outside an ISA, employees exercising options or selling scheme shares, business owners selling a company or its assets, people gifting assets to family, and executors dealing with disposals during an estate administration.

What is included

Everything inside the fixed fee

  • Gain computed for each disposal with acquisition cost, enhancement expenditure and incidental costs allowed in full
  • 60-day UK residential property return filed through HMRC's online service with the tax paid on account
  • Private residence relief, lettings relief and periods of absence calculated for homes that were once let or vacant
  • Share and fund disposals matched under the same-day, 30-day and section 104 pooling rules
  • Business asset disposal relief, investors' relief, gift relief and rollover relief claimed where available
  • Losses identified and claimed, annual exempt amount and rate bands applied, Self Assessment pages completed

How it works

Capital Gains Tax from Castelnau, step by step

  1. Tell us your situation

    A short message or call about what you do and what needs filing. We ask the questions that determine the right package and nothing more.

  2. Fixed fee in writing

    You receive one price for the work, confirmed by email before anything starts. It does not change if the job takes longer than we expected.

  3. Send records, review the draft

    Records come by WhatsApp or email. We prepare the draft, explain the figures in plain English and answer your questions.

  4. We file, you get the receipts

    Once you approve and the fee is settled, we submit electronically and forward the HMRC or Companies House acknowledgement the same day.

Why IGI

What you get in Castelnau

The price for capital gains tax is published on this page and is what a client in Castelnau pays. We confirm it in writing first, and the invoice matches the quote.

Deadline-first: the dates that matter for capital gains tax are shown at the top of this page, diarised for every Castelnau client and chased before they arrive.

Online only, UK based. There is no office in Castelnau to pay for, which is why the fee is the same here as anywhere in England; the work is done by people in the UK who answer the same day.

Continuity matters in capital gains tax: the person who prepared last year's work for your Castelnau business prepares this year's, and remembers what was agreed.

The output for Castelnau clients is never just a form. It is the form, a one-page summary of what it says, and a note of the decisions it points to for capital gains tax.

Approval before filing is a rule, not a courtesy. For capital gains tax in Castelnau, every submission to HMRC or Companies House follows your written go-ahead.

Local facts

About Castelnau

Castelnau is in South West London, within Richmond upon Thames, in the SW13 postcode district, England. Income tax in England follows the UK rates: 20% basic to £50,270, 40% higher to £125,140 and 45% additional, with the personal allowance of £12,570 tapered away above £100,000. National Insurance, VAT and Corporation Tax are UK-wide, and Stamp Duty Land Tax applies to property purchases.

Nearby places we also serve for capital gains tax
PlaceDistanceDirection
Barnes0.6 miSW
Riverside, Hammersmith and Fulham0.7 miE
Mortlake and Barnes Common0.8 miSW
Chiswick Homefields0.8 miNW
Fulham Reach1.0 miNE
Ravenscourt Park1 miN
Palace Riverside1 miE
Munster1 miE

Worth knowing

Rules that come up in this work

Confirmation statements and identity verification

Every company must file a confirmation statement at least once a year, within fourteen days of its review date, with a £50 Companies House fee. Since November 2025 directors and people with significant control must also verify their identity with Companies House, and the confirmation statement is where existing officers confirm they have done so during the transition year.

CIS deductions

The Construction Industry Scheme affects both sides of a construction payment. Contractors must verify subcontractors, deduct the right amount, issue statements and file monthly, with penalties from £100 for each late return. Subcontractors suffer deductions on turnover and recover the excess at the year end. Limited company subcontractors offset deductions against PAYE monthly instead.

Late filing penalties

Penalties are the clearest reason to work to deadlines. A Self Assessment return one day late costs £100 regardless of whether any tax is due; three months late adds £10 a day. Late company accounts start at £150 and reach £1,500, and double if the previous year was also late. None of this is negotiable afterwards except through a narrow reasonable-excuse appeal.

Making Tax Digital for Income Tax

Making Tax Digital for Income Tax began in April 2026 for sole traders and landlords with qualifying income over £50,000, extends to those over £30,000 in April 2027 and is planned for £20,000 in April 2028. It requires digital records in compatible software and four quarterly updates to HMRC each year, with a final declaration replacing the traditional return. Payment dates are unchanged.

The Self Assessment calendar

Self Assessment runs on a fixed annual cycle. Registration by 5 October following the tax year, online filing and payment by 31 January, and a second instalment on 31 July for those making payments on account. The penalties for lateness are automatic and escalate monthly, which is why we file early and chase approvals well before the window closes.

Payments on account

If your Self Assessment bill exceeds £1,000 and less than 80% of your tax was collected at source, HMRC asks for two advance payments towards the following year, each half of the current bill, due 31 January and 31 July. The first year this happens the January payment is effectively one and a half times the bill. We model it in advance and show you how to reduce the payments if income is falling.

Salary versus dividends

Directors of their own companies usually take a salary at or just above the National Insurance thresholds, which keeps the year qualifying for State Pension and is deductible for Corporation Tax, with further income as dividends. Dividends above the £500 allowance are taxed at 10.75%, 35.75% and 39.35% by band and can only be paid from distributable profits after tax, with a minute and voucher each time.

Questions

Capital Gains Tax questions from Castelnau

What is business asset disposal relief?

Formerly entrepreneurs' relief: a reduced rate on gains from selling all or part of a trading business, or shares in a trading company where you held at least 5% and were an officer or employee for two years. The lifetime limit is £1 million. The rate rose to 14% in April 2025 and to 18% from April 2026. Our £299 service prepares and supports the claim.

I gave a property to my child. Is there tax?

Yes. Gifts to anyone other than your spouse or civil partner are disposals at market value, and the gain is taxable even though no money changed hands. The 60-day return applies to residential property. Gift relief can defer gains on business assets, but not on investment property. We value, compute and report the gift.

How do you work out gains on shares bought at different times?

Disposals are matched first to shares bought the same day, then to shares bought in the following 30 days, then to the section 104 pool, which holds all other shares of that class at their average cost. The same rules apply to funds and to crypto. We run the matching across your full history.

Can I use losses from previous years?

Yes, if they were claimed on a return within four years of the tax year in which they arose. Current-year losses are set against current-year gains first, even if that wastes the annual exemption; brought-forward losses are only used to the extent needed to bring gains down to the exemption. We check for unclaimed historical losses as standard.

I sold my former home that I later let out. Is it all taxable?

No. Private residence relief exempts the gain for the period you lived there plus the final nine months of ownership, and certain periods of absence can qualify. The let period is taxable. Lettings relief now applies only where you shared occupation with the tenant. We apportion the gain by days and claim every qualifying period.

What costs can I deduct from the gain?

The purchase price, stamp duty and legal fees on purchase, capital improvements that are still reflected in the asset at sale (extensions, new kitchens, not repairs), and selling costs including agent and legal fees. For shares, dealing costs and stamp duty. For inherited assets, the probate value is the cost.

Do you have an office in Castelnau?

No. IGI Accounting is an online-only firm. We serve Castelnau and every other UK postcode remotely, with records sent by WhatsApp or email and everything filed electronically. The absence of local premises is why the fee for capital gains tax is the same in Castelnau as anywhere else in the country, and why there is nothing to visit and nothing to print.

Is capital gains tax in Castelnau really the same price as elsewhere?

Yes. The fee published on this page is what a client in Castelnau pays and what a client in any other part of England pays. It is confirmed in writing before work starts and the invoice matches the quote. Where a higher package applies because your situation is more complex, we say so at the quote stage, never afterwards.

One message from Castelnau, one fixed price

Tell us what you need. You get one fixed fee in writing, and nothing is filed until you approve it.

WhatsApp for a fixed quote