How to prepare your crypto data for your accountant

UK TAX
3 min read
First published:
Last updated:
Sam Adams
Written by
Samantha Adams
Head of Content

As we move into the peak of tax season, many accountants are juggling a hefty workload, leaving limited room for new clients. If you’ve missed the Self Assessment tax return deadline or are preparing to file late, don’t worry. You can still set yourself up for success by organising your crypto data and providing your accountant with everything they need to file your return as smoothly as possible.

No matter the time of year, getting your crypto data in order is essential. Whether you're filing now or planning ahead for the next tax season, this guide will help you prepare your information, simplify the process, and ensure your accountant has everything they need to handle your tax return.

Why organising your crypto data is crucial

Cryptocurrency can complicate tax reporting due to its unique features: fluctuating market prices, multiple accounts, and various taxable activities. By preparing accurate and complete records, you’ll:

  • Reduce the risk of errors or missed tax obligations.
  • Help your accountant file your tax return accurately.
  • Save time and avoid delays, reducing your accountant's billable hours and potential penalties.

What does your accountant need to file your tax return?

The extent of the information your accountant will need depends on the level of service you require (e.g., are they assisting you to file or handling everything on your behalf). You should consider preparing the following to help them work efficiently:

Personal information

To complete your Self Assessment, you’ll need to gather all personal details, including:

  • National Insurance number
  • P60 and P11D forms
  • Income from other sources (e.g., salary, rental income, self-employment, dividends or overseas property or investment etc.)
  • Pension contributions
  • Capital transactions for any assets like shares, property, or antiques sold or purchased within the tax year.

Crypto transaction history

To ensure your accountant can calculate your crypto gains and income accurately, provide a detailed history of every transaction, including:

  • Buy and sell transactions: Include dates, amounts, and prices.
  • Crypto-to-crypto trades: Provide records of trades like Bitcoin to Ethereum, ensuring your accountant has the market value at the time of each trade.
  • Gifts or purchases made with crypto: Include any context, such as who the gift was to or from, as this could affect the tax position.
  • Rewards: If you've earned rewards (e.g., from mining or staking), list the activity and the value of the rewards at the time they were received.
  • Transfers: Dates and details of transfers between wallets or exchanges. Although these are generally not taxable, ensure they are documented correctly to avoid confusion.
  • Airdrops and forks: Note any tokens received through airdrops or forks, along with their value when received. These might not always be taxable, but it's important to clarify.

Depending on the level of service provided, some accountants may review all transactions, while others may be satisfied with reports from your tax software.

Details of wallets and exchanges

An accountant should never ask you for login details or private keys, but may ask for some details about your wallets and exchanges to help them understand the scope of your activity. Consider compiling a list of:

  • All wallets (hot and cold) you’ve used, with wallet addresses if possible.
  • All exchanges and platforms where you’ve traded or held crypto.

Why getting organised now can save you stress later

Even if you’re filing late, gathering and organising your crypto data now will help your accountant process your tax return as quickly and efficiently as possible. If you wait until the last minute, scrambling for missing information could delay your filing and add extra stress and cost.

By preparing all the necessary documents and organising your crypto activity, you'll be giving your accountant the best chance to help you file correctly and on time or as soon as possible.

Need help preparing your crypto data? Recap can help

Preparing your crypto tax data doesn’t have to be overwhelming. Recap makes it simple to:

  • Consolidate transactions from multiple exchanges and wallets.
  • Automatically calculate capital gains and losses.
  • Generate clear reports that you can share with accountants.

With everything neatly organised, your accountant can focus on filing your taxes quickly and accurately - without manually wading through mountains of data.

Final thoughts

Getting your crypto data ready for your accountant is one of the best ways to ensure a smooth tax filing process. By providing clear, accurate, and complete information, you’ll save time, reduce stress, and make your accountant’s job much easier.

Ready to get started? Our crypto tax calculator is here to help you prepare your data and stay ahead of your crypto tax obligations. Hit the sign up button or drop our team a message for support.

Preparing crypto data FAQs

What data does an accountant need to file my crypto tax return?

Your accountant will need personal information such as your National Insurance number and income from other sources (e.g., salary or self-employment), along with your complete crypto transaction history or an accurate report of all your crypto capital gains, losses, disposals, acquisitions, and income.

Why does my accountant need access to all my crypto transactions?

To calculate your tax position accurately, your accountant (and crypto tax calculators) will need access to your entire transaction history. This ensures all taxable events are included and establishes an accurate cost basis for your assets. For more information, refer to our article on how to calculate your crypto taxes.


I’m filing my tax return late. How can I help my accountant?

If your accountant has limited availability during tax season which means you will be filing a late tax return, you can help by preparing all the data they’ll need. This allows them to work more efficiently and minimises penalties.

I can’t get an appointment with my accountant before the tax deadline, should I file a provisional tax return for my crypto?

If you’re likely to file late and are already registered for Self Assessment, there’s the option to file a provisional return to avoid the £100 penalty, then later, file an amended return with your accountant’s help. It’s preferable to include as many accurate figures as possible on the provisional tax return, however estimating figures for your crypto that turn out to be inaccurate, or result in a large tax refund may raise questions with HMRC. Declaring no crypto figures, but adding a note to show you are still calculating them because of complexities, is likely to draw less attention. For more details on filing a provisional tax return, take a look at our late filing blog.

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