Capital Gains Tax · South East London
Capital gains tax returns in Sidcup
If you have made a disposal from Sidcup 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 East 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 Sidcup
Individuals and trustees in Sidcup 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 Sidcup, step by step
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.
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.
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.
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
Why Sidcup businesses file with IGI
The price for capital gains tax is published on this page and is what a client in Sidcup 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 Sidcup client and chased before they arrive.
Online only, UK based. There is no office in Sidcup 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 Sidcup business prepares this year's, and remembers what was agreed.
The output for Sidcup 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 Sidcup, every submission to HMRC or Companies House follows your written go-ahead.
Local facts
About Sidcup
Sidcup is in South East London, within Bexley, in the DA14 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.
| Place | Distance | Direction |
|---|---|---|
| Lamorbey | 0.6 mi | N |
| Frognal | 0.7 mi | S |
| Longlands, Bexley | 0.8 mi | W |
| Foots Cray | 0.9 mi | SE |
| Albany Park | 1 mi | NE |
| The Oval Sidcup | 1 mi | N |
| Blackfen and Lamorbey | 1 mi | N |
| Cray Meadows | 1 mi | E |
Worth knowing
Rules that come up in this work
Employer National Insurance
Employers pay National Insurance at 15% on each employee's earnings above the £5,000 secondary threshold, following the April 2025 changes. The Employment Allowance offsets up to £10,500 of this for eligible employers, which for a small team often removes the liability entirely, but companies where the director is the only employee do not qualify.
Workplace pensions and auto-enrolment
Workplace pension compliance is part of payroll, not separate from it. Each pay period the payroll assesses who is eligible, calculates employer and employee contributions on qualifying earnings between the lower and upper thresholds, and sends the contribution file to the scheme. The minimum total is 8%, and many employers choose to contribute more as a recruitment advantage.
Dormant companies
Dormancy is a status that is easy to lose. The strict rule is no accounting transactions other than share capital and Companies House fees, which means no bank account activity at all in practice. Fees should be paid personally by the director. A company that traded and has stopped becomes dormant only after its final trading accounts and tax return are filed and HMRC is told.
The trading and property allowances
The first £1,000 of trading income and, separately, the first £1,000 of property income each year is tax free under the trading and property allowances. Below those figures no return is needed for that income. Above them you can deduct the £1,000 allowance instead of actual expenses if that is better, which suits side businesses and single-room lets with few costs.
Late filing penalties
HMRC's penalties for a late Self Assessment return are automatic: £100 the day after 31 January, £10 a day from three months late up to £900, then the greater of £300 or 5% of the tax at six and twelve months. Interest and separate late-payment penalties apply to the tax itself. Companies House charges £150 to £1,500 for late accounts, doubling for a second consecutive year.
Making Tax Digital for Income Tax
The biggest change to Self Assessment in a generation is Making Tax Digital for Income Tax, now live for higher-earning sole traders and landlords and arriving for the rest in stages. Quarterly updates are due by 7 August, 7 November, 7 February and 7 May, built from digital records. The practical consequence is that spreadsheet-and-shoebox bookkeeping is ending for anyone above the threshold.
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.
Questions
Capital Gains Tax questions from Sidcup
Do transfers between spouses trigger tax?
No. Transfers between spouses or civil partners living together are at no gain and no loss; the recipient takes over the original cost. This allows both annual exemptions and both basic rate bands to be used on a later sale, which is a common and legitimate way to reduce the tax on a jointly planned disposal.
What if I sell shares from an employee share scheme?
It depends on the scheme. Shares from a SAYE or SIP scheme have specific cost rules and sometimes income tax has already been paid on part of the value. Options exercised and sold on the same day may have no gain at all. We need the scheme documents and the exercise and sale figures, and we apply the correct treatment for each.
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.
Do you have an office in Sidcup?
No. IGI Accounting is an online-only firm. We serve Sidcup 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 Sidcup as anywhere else in the country, and why there is nothing to visit and nothing to print.
Is capital gains tax in Sidcup really the same price as elsewhere?
Yes. The fee published on this page is what a client in Sidcup 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.
Let us take the deadlines off your plate in Sidcup
Tell us what you need. You get one fixed fee in writing, and nothing is filed until you approve it.