A financial instrument is, under MiFID II, a category that includes shares, bonds, fund units and derivatives, among others. Classification is decisive in tokenization: if what is issued fits that category, it is subject to securities market regulations and outside the scope of the MiCA Regulation.
A financial instrument is any of the instruments listed in Section C of Annex I of MiFID II and, in Spain, Article 2 of Ley 6/2023: transferable securities, money market instruments, fund units, derivatives and emission rights. They remain so when issued or registered on blockchain.
For an issuer, the definition determines which regulation applies. A financial instrument falls under securities market law and CNMV supervision; a crypto-asset that is not one may fall under the MiCA Regulation; and a contract that is neither follows common law. Misclassifying it forces you to redo the issuance.
Legal definition: MiFID II and Ley 6/2023
Article 4.1.15 of MiFID II defines a financial instrument by reference to Section C of its Annex I, «including those issued by means of distributed ledger technology». That last sentence was added by Regulation (EU) 2022/858 on the DLT pilot regime, with effect from 23 March 2023.
In Spain, Article 2 of Ley 6/2023 (LMVSI) sets out the same list in seven letters, and its paragraph 2 clarifies that instruments issued, registered, transferred or stored with distributed ledger technology are also included. It is a closed list: a product is a financial instrument if it fits into any category, not because it resembles an investment.
Types of financial instruments
| Category (Art. 2.1 LMVSI) | Examples | What it means for the issuer |
|---|---|---|
| a) Transferable securities | Shares, bonds, debentures, warrants | They are the «securities» under the Prospectus Regulation: public offering with a prospectus or with an exemption |
| b) Money market instruments | Treasury bills, certificates of deposit, commercial paper | With a maturity of less than 12 months they are not «securities» for prospectus purposes; in Spain, promissory notes of less than 365 days have their own regime (Arts. 5.2 and 35.2.a LMVSI) |
| c) Units and shares in collective investment | Investment funds, SICAV, venture capital entities | Collective investment regime, with an authorised management company |
| d) and e) Derivatives, including credit derivatives | Options, futures, swaps, forward rate agreements, commodity derivatives | They are used to hedge or invest; a company rarely issues them to finance itself |
| f) Financial contracts for differences | CFDs on shares or indices | Investment product, not a financing product |
| g) Emission allowances | CO2 emission allowances under the European scheme | Dedicated emissions trading market |
Financial instrument and transferable security are not synonyms
Every transferable security is a financial instrument, but not the other way around. An interest rate swap is a financial instrument and not a transferable security: it is a bilateral contract, not a class of securities that circulates in the market. The difference has consequences. The Prospectus Regulation only applies to “securities”, which it defines by reference to MiFID II transferable securities, excluding money market instruments with a maturity of less than 12 months. What falls within that category and what does not is in the transferable securities factsheet.
Financial instrument vs MiCA crypto-asset
The MiCA Regulation defines crypto-asset as a digital representation of a value or a right that can be transferred and stored electronically using distributed ledger technology (Art. 3.1.5). The definition is broad, but its Article 2.4.a) excludes crypto-assets that are considered financial instruments. Order matters: first you ask whether the token is a financial instrument, and only if the answer is no does MiCA come into play.
To answer this, ESMA published guidelines on the criteria for classifying crypto-assets as financial instruments, applicable from 18 May 2025. They call for looking at substance over form and applying technological neutrality: a token with rights to dividends, or to recover principal with interest, is treated the same as a share or a bond. We summarize them in ESMA guidelines on crypto-assets.
| Financial instrument (security token) | MiCA crypto-asset | |
|---|---|---|
| Main rule | LMVSI and MiFID II | Regulation (EU) 2023/1114 |
| Offering document | Prospectus, unless exempt | White paper, unless exempt |
| Blockchain registry | ERIR (art. 8 LMVSI and RD 814/2023) | Does not require ERIR |
| Who markets | Entities authorized to provide investment services | Crypto-asset service providers (CASP) |
Financial instrument in accounting
In accounting, the term has a different scope. Rule 9.ª on recognition and measurement of the Plan General de Contabilidad defines a financial instrument as a contract that gives rise to a financial asset in one company and, at the same time, a financial liability or an equity instrument in another. Under that criterion, an outstanding invoice is an accounting financial instrument, but not a MiFID II one.
A debt financial instrument recognizes a debt of the issuer to the investor: bonds, debentures or promissory notes. In the PGC, the investor records them as “debt securities” (financial asset) and the issuer as “debentures and other negotiable securities” (financial liability). An equity instrument is, according to the PGC, one that reflects a residual interest in the assets of the company after deducting all its liabilities; the ordinary share is the typical example. Substance, not form, decides: a share that obliges the company to deliver cash, because it is redeemable at the investor's option or carries a mandatory dividend, is accounted for wholly or partly as a financial liability.
How to use the definition before issuing
- Describe the token rights: economic, governance and redemption rights. That analysis decides the category, not the commercial name.
- Compare them with the list in Article 2 of the LMVSI. If they fit, it is a security token and you need ERIR, the issuance document and the applicable prospectus rule.
- If they do not fit, check whether it is a MiCA crypto-asset or an ordinary contract. The comparison security token vs utility token structures the analysis, which must be validated by an advisor.
HokenFi is a technology platform for issuing tokenized financial instruments; legal qualification and regulated steps are handled by law firms and authorized entities.
Not sure if your token is a financial instrument? Take the issuance assessment (2 min) or request a proposal.
This content is informative and educational. It does not constitute legal, tax, or investment advice. Check the current version of each regulation in the BOE and on EUR-Lex.
HokenFi is a software and infrastructure provider; it does not provide regulated services (CASP, ESI, EAF, or ERIR). This article is informative and does not constitute financial or legal advice.
Frequently asked questions
What is a financial instrument?
It is any of the instruments listed in Section C of Annex I of MiFID II and, in Spain, in Article 2 of Ley 6/2023: transferable securities, money market instruments, collective investment units, derivatives, contracts for differences and emission rights. The list is closed and also applies to instruments issued or registered with distributed ledger technology.
What are the types of financial instruments?
Ley 6/2023 distinguishes seven: transferable securities (shares, bonds, debentures); money market instruments (treasury bills, certificates of deposit); units and shares in collective investment institutions and venture capital institutions; financial and commodity derivatives; credit derivatives; financial contracts for differences; and emission rights. To finance a company, transferable securities are mainly used.
What is a debt financial instrument?
It is the one that recognizes a debt of the issuer to the investor, who receives interest and repayment of principal under the agreed conditions. Examples are bonds, debentures and promissory notes. Under the General Accounting Plan, the investor presents them as debt securities and the issuer, as debentures and other transferable securities within its financial liabilities. If they are represented on blockchain with registration in an ERIR, they remain debt instruments, now tokenized.
Can a token be a financial instrument?
Yes. MiFID II and Ley 6/2023 include instruments issued with distributed ledger technology, and the ESMA guidelines applicable from 18 May 2025 require analyzing substance over form. If the token is a financial instrument, it falls outside the MiCA Regulation (Art. 2.4) and is governed by securities market regulations.
