Crypto Tax · South East London
Crypto tax returns in Blackfen
Crypto tax reports for investors and traders in Blackfen, built from your full exchange and wallet history and computed under HMRC's pooling rules. Up to 500 transactions is £199, with the Self Assessment filed for £279. The fee is fixed before we start and identical in Blackfen and everywhere else in England.
from £199 · fixed, per report
Next deadlines
- Online Self Assessment filing deadline and balancing payment due
- Tax year ends: last day for pension, ISA and dividend timing decisions
- Second payment on account due
- Register for Self Assessment if you started self-employment or new untaxed income in the last tax year
Who this is for
Crypto Tax for Blackfen
Individuals in Blackfen who hold or have held cryptoassets: long-term investors with a few disposals, active traders with thousands of swaps across several exchanges, people earning staking or lending yield, NFT buyers and sellers, those who received airdrops or forks, anyone who has had an HMRC nudge letter, and people with losses from collapsed exchanges or rug-pulled tokens to claim.
What is included
Everything inside the fixed fee
- Transaction history imported from exchanges and wallets, with transfers between your own wallets matched and excluded
- Capital gains computed under HMRC's section 104 pooling, same-day and 30-day rules for every token
- Staking, mining, airdrop, lending and DeFi income identified and reported as miscellaneous or trading income
- Losses calculated and claimed, including negligible value claims for worthless or lost tokens
- A report you can keep: disposals, proceeds, allowable costs, gains, losses and the pool position for each asset
- Self Assessment capital gains pages and income pages completed and filed in the £279 package
How it works
Crypto Tax from Blackfen, 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 Blackfen businesses file with IGI
No hourly rate and no surprise invoice. Blackfen clients know the fee for crypto tax before they send a single document, and it stays fixed.
We work to the HMRC and Companies House calendar, not an appointment diary. Clients in Blackfen get reminders at 60, 30 and 7 days before each date that applies to crypto tax.
Online only, UK based. There is no office in Blackfen 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 crypto tax: the person who prepared last year's work for your Blackfen business prepares this year's, and remembers what was agreed.
We explain crypto tax in the words Blackfen business owners use, not in accountant's shorthand, and we show our working so you can check it.
Nothing is filed for Blackfen until you have reviewed and approved it. You see the draft, you ask questions, you sign off, then we submit and send you the receipt.
Local facts
About Blackfen
Blackfen is in South East London, within Bexley, in the DA15 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 |
|---|---|---|
| The Oval Sidcup | 0.3 mi | S |
| Blackfen and Lamorbey | 0.6 mi | SW |
| Falconwood and Welling | 0.6 mi | NW |
| Blendon and Penhill | 0.7 mi | SE |
| Blendon | 0.8 mi | E |
| Danson Park | 0.8 mi | NE |
| Welling | 0.9 mi | NE |
| Avery Hill | 1.0 mi | W |
Worth knowing
Rules that come up in this work
Record keeping
Record keeping is a legal obligation with a penalty of up to £3,000 for failure, but its real value is in making every other filing cheaper and more defensible. Keep invoices, receipts, bank statements, mileage logs and any HMRC correspondence, digitally if you like, for five years after the relevant filing deadline for individuals and six years for companies and VAT.
Allowable expenses
Expense claims are where a return is won or lost in an enquiry. The test is wholly and exclusively for the trade; where a cost is mixed, the business proportion can be claimed if it can be identified. Capital items such as equipment and vans are relieved through capital allowances rather than as expenses, except under the cash basis where they are simply deducted when paid.
Crypto records and reporting
Most crypto holders have taxable events they do not recognise, because every swap is a disposal even when no pounds change hands. The computation requires the complete transaction history from every exchange and wallet, pooled by asset with HMRC's matching rules applied. Exchange-generated tax reports are frequently wrong because they cannot see transfers between a user's own wallets.
The 60-day property CGT return
The 60-day Capital Gains Tax return on residential property is the deadline landlords most often miss, because it falls outside the Self Assessment cycle and runs from completion, not exchange. Private residence relief for periods you lived in the property, plus the final nine months, reduces the gain. Penalties for a late return mirror Self Assessment, starting at £100.
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.
Employer National Insurance
The cost of an employee is more than the salary. Employer National Insurance at 15% above £5,000 a year, the 3% minimum pension contribution, holiday pay, equipment and management time all come on top. The Employment Allowance of £10,500 reduces the National Insurance for most employers with more than one person on the payroll.
Questions
Crypto Tax questions from Blackfen
How far back do I need to go?
The pool cost of what you hold today depends on every purchase you have ever made, so the computation must start from your first transaction even if you only need to report recent years. If earlier years were under-reported, we quantify the position and advise on disclosure, which HMRC treats far more leniently than discovery.
What if I am a trader rather than an investor?
HMRC rarely accepts that an individual is trading in crypto; the bar is very high and the badges of trade must be met. If you are trading, profits are income and losses are trading losses. For almost everyone the capital gains treatment applies, and we tell you plainly which side of the line you are on.
Do I pay tax if I never cashed out to pounds?
Usually yes. Swapping one cryptoasset for another, spending crypto on goods or services, and gifting it to anyone other than a spouse are all disposals for Capital Gains Tax, valued in sterling at the time. Only moving coins between your own wallets is not a disposal. Most people's taxable events are swaps, not sales for cash.
How are gains calculated with so many purchases at different prices?
HMRC requires pooling: all units of the same token form one section 104 pool with an average cost, except that disposals are first matched against purchases on the same day and then against purchases within the following 30 days. We apply these rules across your entire history, which is impossible to do accurately by hand at any volume.
What are the Capital Gains Tax rates and allowance?
The annual exempt amount is £3,000 for 2026/27. Gains above it are taxed at 18% within your basic rate band and 24% above it. Losses in the year are set against gains automatically, and unused losses can be carried forward indefinitely if claimed on a return within four years.
Is staking income a capital gain?
No. Rewards from staking, lending, liquidity provision and most DeFi protocols are income when received, taxed at your income tax rate on the sterling value that day, and reported as miscellaneous income unless your activity amounts to a trade. The tokens then enter your pool at that value for a later capital gain or loss.
Which deadlines matter most for crypto tax?
The next four dates that apply to crypto tax are shown at the top of this page, calculated from today. For Blackfen clients we diarise every one of them from the day you join and send reminders before each, so the work is done in good time rather than in the last week before a penalty.
How do I get started from Blackfen?
Message us on WhatsApp or email with a sentence about your business and what you need. We reply in working hours with any questions and a fixed fee for crypto tax. Once you confirm, we tell you exactly which records to send and the work begins. Most Blackfen clients are set up within a day.
Ready to fix your fee in Blackfen?
Tell us what you need. You get one fixed fee in writing, and nothing is filed until you approve it.