01 · Understand your transactions
Crypto accounting
From banks to wallets, we organise your data to trace your transactions and prepare your accounts.
Explore crypto accounting ↗Crypto accounting,
at the heart of your business.
Accounting firm · Crypto & business
At the heart of your operationsThe HODL approach
€Banks
↔Exchanges
HODLUnderstand · Connect · Document
₿Wallets
≡Supporting records
Scattered transactions. A coherent view of your accounts.
Trusted by these companies
OAK Research
Your projects move forward. Your accounting should keep pace.
Crypto treasury, customer payments, holding companies or mining: we connect your transactions with your accounting and business management.
Let’s discuss your project →An initial conversation to understand your activity.
Accounting & advisoryCrypto-assets & businessesFirm founded in 2022
Start with your business needs
One business, several ways to use crypto-assets. Choose the starting point that reflects your activity.
02 · Develop your business
Crypto payments
A clear process for your business: receipts, conversion, supporting records and accounting reconciliation.
Prepare your crypto payments ↗03 · Structure your project
Holding & treasury
We start with your structure and liquidity needs to establish a framework for holding digital assets.
Assess your structure ↗04 · Organise your operations
Mining & equipment
Equipment, hosting, consumption and revenue: each belongs in the records of your activity.
Organise your mining activity ↗A regulated profession, a practical approach
A company using crypto-assets still needs to run a business: issue invoices, pay suppliers, prepare its accounts and explain its transactions. The challenge arises when records are spread across banks, exchanges, wallets and protocols. A balance shown in an application is not enough to reconstruct that history.
HODL Consulting connects these operations with your accounting records. Our work can cover bookkeeping and annual accounts, a defined crypto scope alongside your existing accountant, or financial management and reporting.
Understand your business and transactions
We start with what you actually do: hold assets for your own treasury, receive customer payments, operate mining equipment or provide services to third parties. We identify the entities involved, the accounts used, decision-making responsibilities and available information. This prevents a commercial sale, an internal transfer and an asset purchase from being treated as the same event.
Reconstruct usable records
Exchange exports, public wallet addresses, bank statements and supporting documents need to reconcile. A transfer between two wallets owned by the same company must not be mistaken for revenue. Fees, conversions, refunds and movements with unidentified counterparties need explanations. Tracking tools help with reconciliation; discrepancies still require analysis.
Document the treatment and prepare the accounts
The working file connects transactions to supporting evidence and the accounting treatments adopted. Depending on the agreed engagement, it can include an inventory of accounts and wallets, reconciled movements and balances, unresolved discrepancies and the information needed to prepare annual accounts. The scope, responsibilities and deliverables are specified in the engagement letter.
Establish a repeatable process
Year-end work is easier when records are collected throughout the year. Together, we define how often to export data, which documents to retain and which checks to perform. For a new business, this means establishing a method before transactions begin. For an existing activity, it means reconstructing the history while preserving traceability.
Explore our services and identify the scope your company needs →
Three situations, three starting points
- A retailer wants to accept crypto: the invoice, payment, provider fees and final proceeds must be connected. Prepare crypto payments for your business.
- A holding company wants to own digital assets: start with the structure, source of funds, decisions and liquidity needs. Explore holding companies and crypto treasury.
- An accounting firm already supports the company: a specialist scope can be agreed for organising crypto records and handing over the work, with clearly assigned responsibilities. Understand our approach to crypto accounting.
Meet HODL Consulting
Where we meet
Tech culture. The rigour of an accounting firm.
We discuss operations, tools and the development of your business. Our role is to translate that reality into reliable accounts, understandable decisions and a clearly defined engagement.
Founded in 2022 by Houssen Issouf Aly, a French chartered accountant, HODL Consulting combines experience supporting businesses with a practice focused on crypto-assets. The firm’s founder discovered crypto in 2017, after working with international companies and their French subsidiaries.
Discover the firm and its founder →Crypto accounting, in practice and on video.
Explore practical questions from our Crypto–Accounting playlist. These videos are in French and open on YouTube.
Google reviews
★★★★★
« 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 excerptFive excerpts selected by the firm, shown in their original French wording.
Client 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
Business uses of crypto-assets call for practical answers. We share this perspective in specialist media and podcasts.
Watch our appearance on BFM Crypto, le Club, and explore the interviews and publications collected on our press page.
Our partners
Pennylane
JuriactesBefore getting in touch
To prepare an initial conversation, tell us about your activity, company structure, use of crypto-assets and the support you need: company formation, historical bookkeeping, year-end accounts, recurring support or a specific assignment. The number of exchanges, wallets and transactions helps us understand the complexity involved.
Do we need to have already invested before contacting you?
No. An early discussion helps identify organisational questions and the records to retain before you begin. If your company already holds assets, we start with the existing history and available documents. The aim is to adapt the work to your actual circumstances.
Can you work alongside our current accountant?
A crypto-specific engagement can be considered with your accounting firm. We then define who collects data, performs reconciliations, prepares the accounting treatments and incorporates the work into the accounts. This arrangement is established before the engagement begins.
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 frequency of reporting. Reconstructing fragmented records is different from supporting a business with well-documented transactions. We clarify the work and responsibilities before engagement.
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.