01 · Bookkeeping
Crypto accounting
We reconcile your transactions with supporting documents, bank statements and exchange exports to prepare your accounts.
Explore crypto accounting ↗Accountants for
crypto, blockchain
and Web3.
Accounting firm · Crypto & business
FROM ACCOUNTING SOFTWARE TO THE BLOCKCHAINHODL
Trusted by these companies
OAK Research
We support businesses that receive, hold or produce crypto-assets, from collecting transaction records to preparing their accounts.
Start with your business needs
Do you accept crypto payments, invest through your company or operate mining equipment? Here is how we can help.
02 · Customer payments
Crypto payments
Want to be paid in crypto? We help you organise supporting documents, conversions and payment records.
Prepare for crypto payments ↗03 · Holding assets
Holding companies & treasury
Before you invest through a company, we review its structure, the source of funds and your cash requirements.
Review your structure ↗04 · Operating equipment
Mining & equipment
Machines, hosting, electricity and mining revenue: we help you track the costs and their accounting treatment.
Organise your mining business ↗How we prepare your accounts
Our engagement letter sets out the work entrusted to the firm. It usually follows these four steps.
Understand your activity
We identify the companies and accounts involved, and the information still needed.
Reconstruct the records
We reconcile transactions, statements and supporting documents, then identify discrepancies to resolve.
Prepare your accounts
We document the treatment of purchases, sales and transfers in preparation for the year-end accounts.
Organise ongoing reporting
We agree with you how often records should be collected and which checks to perform during the year.
Bookkeeping and annual accounts ↗ Financial management ↗ Working with your accountant ↗
Meet HODL Consulting
Your accounts,
including crypto.
An invoice paid in stablecoins, exchange fees and transfers between wallets all need to be explained in your accounts.
We can handle your company’s bookkeeping or work on its crypto transactions alongside your existing accountant.
Founded in 2022 by Houssen Issouf Aly,
chartered accountant in France.
Crypto accounting
on our YouTube channel
Three videos from our firm on crypto treasury and supplier payments. Watch the full playlist on YouTube.
Crypto treasury: points to consider
HODL Consulting · Video in French
Treasury: accounting and tax implications
HODL Consulting · Video in French
Paying suppliers in cryptocurrency
HODL Consulting · Video in French★★★★★
« L’équipe est sérieuse, réactive et compétente, notamment sur les sujets liés à la comptabilité crypto »Visit: August 2025 · Google review excerpt★★★★★
« Cela fait maintenant plusieurs années qu'Houssen nous accompagne sur la compta d'entreprise crypto. Très réactif et bon accompagnement, je recommande ! »Visit: February 2026 · Google review excerpt★★★★★
« L’équipe est réactive, à l’écoute et sait vulgariser des sujets complexes. »Visit: September 2025 · Google review excerpt★★★★★
« Excellent cabinet ! Je recommande vivement pour l’accompagnement de vos projets crypto ou blockchain. »Visit: June 2025 · Google review excerpt★★★★★
« Une mention spéciale pour leur disponibilité et la facilité des échanges. »Visit: April 2025 · Google review excerptClient testimonials
« Les conseils experts et pragmatiques de HODL Consulting nous accompagnent depuis notre création. Plus qu’un partenaire rare et à l’écoute de nos ambitions, le cabinet est avant tout un levier crucial pour faire face aux enjeux de la nouvelle économie »Hugo Marchadier · CEO Hard Papers« Houssen est l'un des rares comptables à avoir développé une réelle expertise qui couvre la gestion traditionnelle d'une entreprise mais également les exploitations en lien avec les cryptomonnaies et les différents actifs numériques du Web 3.0. »Owen Simonin · Founder MeriaExpertise shared in the media
BFM BUSINESS · CRYPTO, LE CLUB
Watch our appearance on BFM Crypto, le Club. Our other interviews, articles and podcasts are collected on the press page.
Our partners
Pennylane
JuriactesBefore getting in touch
Tell us about your company’s activity, its use of crypto-assets and the work you need. Include the number of exchanges, wallets and, if possible, transactions.
Do we need to have already invested before contacting you?
No. You can contact us before your first transaction to discuss which documents to keep and how to organise your records. If you have already started, we review the history available.
Can you work alongside our current accountant?
Yes, through an engagement dedicated to crypto transactions. We agree with your firm who will collect the data, perform reconciliations, prepare accounting treatments and incorporate the work into the accounts.
Which documents should we prepare?
Start with a list of business accounts and wallets, available exports, bank statements relating to the transactions and key documents such as invoices, contracts and decisions. Public addresses identify on-chain movements. Private keys and recovery phrases are not accounting documents to send us.
How are scope and fees determined?
They depend on the work required: transaction volume and type, number of entities, quality of historical records, tools used and reporting frequency. These details allow us to propose the scope and fees before you commit.
Where should we start learning about the subject?
Our guide to corporate crypto treasury sets out the initial questions. The pages for medical professionals, mining and equipment, and crypto service providers and MiCA examine distinct situations. You can then explore our articles and insights.