What does a crypto tax accountant in London actually do
We start with the data, because the return is only as good as the history behind it. Every exchange export and every wallet address goes into one ledger, DeFi positions included. Transfers between your own wallets are matched so they stop showing up as sales. The pooling rules that HMRC applies to crypto are run across the whole history, including the same day and 30 day rules that most software gets wrong, and the result is a capital gains figure you could defend line by line if HMRC asked. Then we file the SA100 with the SA108 capital gains pages, with staking and airdrop income on the right boxes. Our guide to what you actually pay on crypto gains in 2026 to 2027 explains the rates in more detail.
The practice is remote and works with UK taxpayers only. There is no London office and no meeting room. Every engagement runs over video calls and secure file sharing, so where you sit in the city makes no difference to the work. That suits crypto, where the evidence is on a screen anyway.
If you are new to how HMRC taxes crypto, start with the UK crypto tax guide. If you already know you need help, the crypto tax accountants page describes the service in full and the services page lists everything we take on.
What has the FCA done about crypto ATMs in London
On 17 July 2025 the Financial Conduct Authority and the Metropolitan Police searched four premises across southwest London, seized seven crypto ATMs and arrested two people on suspicion of running an illegal cryptoasset exchange. The FCA’s press release on the southwest London seizures also states that there are currently no legally operated crypto ATMs in the UK. Five months earlier, on 28 February 2025, Southwark Crown Court sentenced Olumide Osunkoya to four years in prison for operating crypto ATMs at 28 locations after the FCA had refused him registration. The regulator’s release on the Osunkoya sentence calls it the first UK criminal sentence for unregistered crypto activity. Both releases were read on 17 September 2026.
Why does this matter for a London holder filing a return? An ATM purchase leaves no exchange statement. The cost of those coins has to be proved from the chain and from whatever receipt survived, and most people kept neither. When the coins are later sold on an exchange, the sale reaches HMRC through the reporting rules described in our post on what HMRC receives automatically from 2026. The purchase never does. That gap between a reported sale and an unproven cost is what turns a routine return into a question from HMRC.
We rebuild that cost from the transaction hash and the sterling price on the day, starting from the wallet the machine paid into. It takes longer than importing a CSV, and it is the difference between a gain HMRC accepts and a gain calculated on a cost of zero.
How much does a crypto accountant cost
Among UK firms that do only crypto tax the going rate for one properly reconciled and filed year is £750 to £2,000, checked against published prices in September 2026. A simple year filed from a clean software report can cost £300 or less. Heavy DeFi or NFT years usually run £1,200 to £2,500, and a multi year catch up with a disclosure to HMRC sits between £1,500 and £3,500. Our post on what accountants charge for a tax return in 2026 shows where those bands come from.
What moves the price is the state of the history. Two exchanges and a hundred trades is a short job. Six exchanges, two of them closed, plus a year of yield farming across three chains is a long one. We quote one fixed price after a free review, and you can set your own numbers on the pricing page to see the range for a history like yours before you talk to anyone.
Do you need an accountant for crypto
Sometimes no. If you bought on one exchange, sold on the same exchange, never moved coins to a wallet and your total gains sit under the £3,000 allowance, the exchange report and a careful read of the pooling rules will get you there. The cases where software alone goes wrong are predictable. Transfers between your own wallets counted as disposals. Coins bridged to another chain treated as sold. Staking rewards recorded at a zero cost, so the eventual sale shows a gain on the whole amount. A history that starts in 2020 on an exchange that no longer exists. Our review of why crypto tax software gets UK returns wrong goes through each of these with examples.
There is one more reason London holders in particular come to us. High trading volume raises the question of whether HMRC would treat you as trading rather than investing, and the answer changes the tax from capital gains to income. HMRC decides that with the badges of trade, and it is a judgement call worth making before the return goes in rather than after a letter arrives.
Can HMRC see my crypto
Yes, and more of it each year. UK exchanges have handed customer lists to HMRC under information notices for several years, which is how 81,000 crypto letters went out in one year. From January 2026 the Cryptoasset Reporting Framework requires providers to collect and report customer transaction data, so the flow becomes routine rather than occasional. Our post on whether HMRC can see your wallet sets out what is visible, what is inferred and what still has to come from you.
If a letter has already arrived, read our guide to the HMRC nudge letter before you reply. It is a prompt to check your position, and the worst response is a quick reply written before the numbers exist. Where tax is owed for earlier years, the disclosure route keeps penalties at the low end, and coming forward before HMRC writes keeps them lower still.
Why London incomes change the crypto maths
Once adjusted net income passes £100,000 the personal allowance drops by £1 for every £2 above that, reaching zero at £125,140, and income above £125,140 is taxed at 45%, per the gov.uk income tax rates page read on 17 September 2026. Staking and airdrop income sits on top of salary, so for many London filers it is taxed at 40% or 45% and can pull the allowance down with it. A portfolio that would be a footnote elsewhere is often a five figure tax question here. These are the London profiles we handle most.
City professionals with a portfolio on the side
City professionals with RSUs and a bonus, plus a crypto account on the side. The income side of crypto costs more than most people budget for at these salaries, and an employer’s personal account dealing policy may cover crypto too. We get the tax side clean so there is nothing to explain later.
New arrivals who expect their crypto to count as foreign
HMRC’s manual at CRYPTO22600 says an exchange token is located where its beneficial owner is resident. Once you are UK resident your crypto is usually a UK asset, whatever exchange holds it. Relying on the foreign income and gains relief for crypto without checking that first is the mistake we see most from people who moved to London recently. If you are leaving instead, read why moving abroad does not end a UK crypto tax bill.
Founders and web3 teams with vesting tokens
Tokens are generally taxed as income when they vest, before you can sell them, and the bill can fall in a year when the price has already dropped. Our post on the tax bill founder tokens create on the day they vest covers the mechanics. We handle vesting schedules through to the eventual disposals.
Long term holders who have never filed
Bought in 2017 or 2020, sold some in the last two years, never registered for Self Assessment. This is fixable, and doing it before a letter arrives keeps penalties at the bottom of the range. First time filers must register for Self Assessment by 5 October 2026 for the year that ended 5 April 2026.
Which other cities do you cover
All of the UK, from the same team and the same process. Holders west of the capital can read the crypto tax accountant page for Bristol, and the Midlands is covered on the crypto tax accountant page for Birmingham. The people behind the work, and the standard every figure on this site is checked against, are described on the about page.
Crypto tax questions from London investors
How much does a crypto tax accountant in London cost?
UK firms that do only crypto tax charge £750 to £2,000 for one reconciled and filed year, checked against published prices in September 2026. A simple year from a clean software report can be £300 or less, and a multi year catch up with a disclosure to HMRC runs £1,500 to £3,500. The price follows the state of the history, and we quote one fixed price after a free review.
Do I need a crypto tax accountant based in London?
You need the right accountant more than you need a postcode. Crypto tax is a data problem before it is a filing problem, and the work happens on a screen wherever you are. The practice is remote and works with UK taxpayers only, so a London client and a Leeds client get the same process over video calls and secure file sharing.
Who actually does the work on my file?
Fahad Zar, lead chain analyst and crypto tax expert, rebuilds the history and reviews every return. Sehar Javed, chain analyst, works the reconciliation alongside him. The same people who take the first call handle the file to the end, and nothing is passed to a call centre or an outsourced team.
I have had a letter from HMRC about crypto. What should I do first?
Do not reply before you know your numbers. An HMRC nudge letter is a prompt to check your position and it affects the penalty position if tax is owed, so the order is reconcile first, then respond. Get the full history rebuilt, work out what is actually owed for each year, and answer the letter with figures you can evidence.
When is my next crypto tax deadline?
For the 2025 to 2026 tax year, which ended on 5 April 2026, the online return and payment are due by 31 January 2027. Anyone filing for the first time must register for Self Assessment by 5 October 2026, and a paper return has to reach HMRC by 31 October 2026. Both dates come from the gov.uk Self Assessment deadlines page, checked on 17 September 2026.