How to Structure and Account for a Convertible Loan Note in Germany, HGB & IFRS

To structure account convertible loan note Germany arrangements correctly, finance teams must treat the instrument as both a legal contract and an accounting event, because the two rarely line up perfectly. A convertible loan note, a debt instrument that carries a right or obligation to convert into equity at a defined trigger, is a staple of German startup bridge rounds and mezzanine financing, prized for its speed and for deferring a formal valuation. This guide walks through the full practitioner lifecycle under both the German Commercial Code (Handelsgesetzbuch, HGB) and International Financial Reporting Standards (IFRS): term-sheet mechanics, debt-versus-equity classification, initial and subsequent measurement, tax, covenants, investor reporting and worked journal entries.

The aim is a single, audit-ready reference for issuers and investors preparing a compliant closing in Germany.

Key terms and convertible note mechanics (term-sheet checklist)

Before any accounting question arises, the term sheet fixes the economics. A well-drafted convertible loan note Germany term sheet must be unambiguous about how and when conversion happens, because the contractual wording directly drives the accounting classification under both HGB and IFRS. Poorly specified conversion formulas are one of the most common sources of restatement and audit dispute.

The principal commercial features to define are:

• Principal and interest. The face amount advanced, the coupon (fixed or PIK/accrued), and whether interest accrues to conversion or is paid in cash.
• Maturity and redemption. The long-stop date and what happens if conversion is not triggered, cash repayment, mandatory conversion, or an extension mechanism.
• Conversion trigger. Qualified financing round, maturity, change of control, or investor election.
• Conversion price or formula. Discount to the next round price, valuation cap, or a fixed price per share.
• Anti-dilution, cap and floor. Protection against down-rounds and ceilings or floors on the conversion price.
• Settlement method. New shares, treatment of accrued interest (converted or paid), cashless settlement, or a share-premium allocation.
• Pre-emption, change-of-control and covenants. Shareholder waivers, acceleration rights, and payment restrictions.

Conversion methods

Three settlement archetypes dominate. First, conversion into a fixed number of shares for a fixed cash amount, the classic “fixed-for-fixed” pattern that supports equity treatment under IFRS. Second, conversion into a variable number of shares determined by a future round price or a cap, which often fails the fixed-for-fixed test. Third, mandatory versus optional conversion, which affects whether the instrument carries a genuine repayment obligation. Each archetype produces materially different entries, so the drafting and the accounting memo must be prepared together.

Typical investor protections

Investors routinely negotiate a valuation cap, a discount to the next round, most-favoured-nation clauses, information rights, and anti-dilution ratchets. Discount levels are a matter of commercial negotiation and vary between deals. From an accounting standpoint, each protection can introduce a variable element into the conversion formula, and the more variability, the more likely an embedded derivative analysis will be required under IFRS 9.

Sample conversion clause (annotated)

“Upon completion of a Qualified Financing, the outstanding Principal together with accrued but unpaid interest shall automatically convert into Series A shares at a price per share equal to the lower of (a) the Qualified Financing price less the Discount, and (b) the price implied by the Valuation Cap.” The “lower of” mechanic and the variable round price mean this clause does not convert into a fixed number of shares for a fixed amount, a signal to assess the conversion feature as a liability or embedded derivative rather than pure equity. When you structure account convertible loan note germany documents, flag such variable mechanics early for the technical reviewer.

Legal and regulatory considerations in Germany

Beyond the economics, the instrument sits inside German corporate and securities law. The structure must respect capital-maintenance rules and the formalities for issuing shares on conversion, which differ sharply between a GmbH and an AG.

BaFin and prospectus thresholds

The Bundesanstalt für Finanzdienstleistungsaufsicht (BaFin) supervises securities offerings in Germany, within the framework of the EU Prospectus Regulation (Regulation (EU) 2017/1129) and the German Securities Prospectus Act (Wertpapierprospektgesetz, WpPG). Where convertible instruments are offered to the public or to a wide pool of investors, prospectus and offer rules may be engaged, depending on the offer size and the target investor base. Private placements to a limited number of qualified or existing investors typically fall outside the heaviest disclosure obligations, but the threshold analysis should be documented at closing rather than assumed. BaFin guidance and the applicable exemption thresholds should be reviewed for each offering because treating a convertible instrument as a security can trigger registration, disclosure and conduct requirements.

GmbH versus AG conversion mechanics

For a GmbH, conversion into equity usually requires a capital increase by notarised shareholder resolution, waiver or exercise of pre-emption rights, and registration of the new capital. For an AG, conversion is more frequently effected through conditional capital (bedingtes Kapital) authorised in advance under the Stock Corporation Act (Aktiengesetz, AktG), which allows shares to be issued on conversion without a further shareholders’ meeting. The choice of entity therefore shapes both the speed of conversion and the documentary trail auditors will expect.

Notifying the commercial register and shareholders

Any capital increase on conversion must be filed with the commercial register (Handelsregister). Late or defective filings are a frequent practical pitfall: a capital increase is not legally effective until it is registered, which can create a mismatch between the accounting date and the legal date of conversion. Build the registration timeline into the closing checklist.

HGB, classification, initial recognition and measurement

German statutory accounts are prepared under the HGB. The balance-sheet presentation and measurement rules relevant to liabilities and equity are set out in the accounting provisions of the HGB, with the standard balance-sheet structure in § 266 HGB. For accounting convertible note HGB purposes, the starting point is that a convertible loan note is recognised as a liability (Verbindlichkeit) unless and until conversion occurs, because the HGB is comparatively conservative and does not generally require the economic bifurcation of the instrument that IFRS demands.

HGB measurement rules

On initial recognition, the liability is recorded at its settlement (repayment) amount, the Erfüllungsbetrag, under the HGB prudence principle (§ 253 HGB). Transaction costs are typically expensed or, where directly attributable, reflected over the term. The conversion option is usually not separately recognised as a distinct equity component under HGB; the instrument is carried as a single liability. Accrued interest is recognised as an expense and added to the liability where unpaid. This single-instrument approach is the principal divergence from IFRS and is the reason that HGB and IFRS numbers for the same convertible loan note Germany can differ markedly.

Journal entries, initial recognition (HGB)

• Dr Cash (proceeds received)
• Cr Convertible loan liability (repayment amount)

Interest accrues over the term: Dr Interest expense / Cr Convertible loan liability (or interest payable).

Journal entries, on conversion (HGB)

On conversion, the carrying amount of the liability (principal plus any accrued interest converted) is derecognised and transferred to equity:

• Dr Convertible loan liability (carrying amount including converted accrued interest)
• Cr Subscribed capital (Gezeichnetes Kapital) (nominal value of new shares)
• Cr Capital reserve (Kapitalrücklage) (excess over nominal)

Because the conversion option was never separated, there is generally no “day-one” equity component and no catch-up remeasurement on conversion under HGB, a simpler outcome than IFRS, but one that can understate the economic cost of the embedded option.

IFRS, classification and measurement (IAS 32 and IFRS 9)

Under IFRS the analysis is more granular. IAS 32 governs whether and how an instrument is split between a liability component and an equity component, while IFRS 9 governs the initial recognition and subsequent measurement of the financial liability. For accounting convertible note IFRS treatment, the single most important question is whether the conversion feature meets the “fixed-for-fixed” condition.

IAS 32 classification tests

IAS 32 requires the issuer to classify a compound financial instrument into its liability and equity components on initial recognition. Where a convertible note converts into a fixed number of equity shares for a fixed amount of cash or another financial asset, the conversion option is an equity component and the instrument is a compound instrument: the liability component is measured first (at the fair value of a similar liability without the conversion feature), and the equity component is the residual.

If, by contrast, conversion is into a variable number of shares, for example, a number set by a future round price, a valuation cap or a “lower of” mechanic, the conversion feature fails the fixed-for-fixed test and is not equity; it is instead part of the liability, frequently as an embedded derivative.

IFRS 9 initial and subsequent measurement

Under IFRS 9, the liability component is initially recognised at fair value and subsequently measured at amortised cost using the effective interest method, so interest expense is accreted up to the redemption amount over the term. Where the conversion feature is a separable embedded derivative (because the host is a liability and the derivative is not closely related), it is measured at fair value through profit or loss, which introduces earnings volatility as the fair value of the conversion feature moves with the equity value and market conditions.

Embedded derivative analysis

The embedded derivative test is where many issuers go wrong. If the conversion right gives a variable number of shares, the right is not “closely related” to the debt host and must be separated and fair-valued at each reporting date. This is a technically demanding valuation (often an option-pricing model) and requires contemporaneous support in the audit file. When you structure account convertible loan note germany documents for an IFRS reporter, decide the embedded-derivative position before signing, because it drives both the day-one split and the ongoing remeasurement.

Derecognition on conversion and disclosure

On conversion of a compound instrument, the liability component is derecognised and, together with the equity component previously recognised, is reclassified within equity; no gain or loss generally arises on conversion of the equity-classified portion. Disclosure obligations under IFRS 7 and IAS 1 require the issuer to explain the terms, the split, the measurement basis, interest expense and the risk exposures arising from the instrument. These disclosures are routinely tested by auditors and should be drafted alongside the accounting memo.

Journal entries, issuance (IFRS compound instrument)

• Dr Cash (total proceeds)
• Cr Convertible loan liability (fair value of a comparable non-convertible liability)
• Cr Equity, conversion option (residual)

Subsequent: Dr Interest expense (effective rate) / Cr Convertible loan liability to accrete the liability to its redemption amount. See IAS 32 and IFRS 9 for the governing requirements.

HGB vs IFRS: how to account for convertible loan notes in Germany

The table below summarises the key differences a reporting team must manage when it prepares both a statutory HGB account and an IFRS reporting package for the same instrument. Dual reporters should expect reconciling items on classification, measurement and interest expense.

Tax consequences in Germany

The tax treatment of a convertible loan note in Germany turns on the same debt-versus-equity distinction, but tax follows its own rules and will not always mirror the accounting classification. German corporate income tax (Körperschaftsteuer) and trade tax (Gewerbesteuer) both bear on interest expense and conversion outcomes, and the position should be documented with reference to BMF guidance and relevant BFH case law.

Interest deductibility

Interest on a genuine loan is generally deductible for corporate and trade tax purposes, provided it is at arm’s length and properly documented. Deductibility can be restricted by the interest-limitation rule (Zinsschranke, § 4h EStG / § 8a KStG) and by anti-avoidance provisions, particularly for related-party lenders. Where the lender is a shareholder, the arm’s-length standard and transfer-pricing documentation become critical, and trade tax add-backs under § 8 GewStG may apply to a portion of the interest.

Conversion gain or loss

Conversion of debt into equity can crystallise tax consequences, for example, where a loan is converted at a value below its nominal amount, giving rise to debt-waiver or restructuring-gain questions that have been the subject of BFH decisions and BMF circulars. The treatment of accrued but unpaid interest on conversion also needs analysis, because it may be deemed paid for withholding and deductibility purposes. Each conversion should be supported by a contemporaneous memo setting out the tax rationale.

Withholding and reporting

Interest payments can attract withholding and reporting obligations depending on the lender’s status and residence. Cross-border structures require particular care around treaty relief and the documentation needed to apply a reduced rate. Timing matters: withholding is generally triggered on payment or deemed payment, including potentially on conversion of accrued interest.

Practical tax documentation checklist

• Arm’s-length interest analysis and transfer-pricing file for related-party notes.
• Memo on conversion treatment and any debt-waiver or restructuring gain.
• Withholding assessment and treaty documentation for cross-border lenders.
• Reconciliation between the accounting split (IFRS) and the tax base.
• Reference to applicable BMF guidance and any relevant BFH decision.

Covenant drafting and investor reporting obligations

Good covenant drafting protects both the economics and the accounting. When you structure account convertible loan note germany terms, draft the covenants so that they do not inadvertently force a reclassification, for instance, payment restrictions or mandatory redemption triggers can convert what was intended to be an equity component into a liability.

Accounting-clarity clauses

Include an explicit statement of how accrued interest is treated on conversion (converted versus paid), a clear and single conversion formula (avoid conflicting “lower of” and “greater of” mechanics unless intended), and a definition of the number of shares issuable. Where the parties intend equity treatment under IAS 32, align the drafting with the fixed-for-fixed condition and avoid variable-share settlement unless the derivative consequences are accepted.

Reporting timeline to investors and auditors

• At closing. Signed term sheet, board/shareholder approvals, accounting classification memo, valuation support for any split or embedded derivative.
• Each reporting period. Interest accrual schedule, fair-value remeasurement of any embedded derivative, covenant-compliance certificate.
• On conversion. Conversion calculation, registration confirmation, updated cap table, and a conversion memo for the auditors.

Worked example, issuance, subsequent measurement and conversion

Example assumptions

The following figures are illustrative only. A GmbH issues a €1,000,000 convertible loan note with a 5% annual coupon and a two-year term, converting into a fixed number of shares for a fixed amount at maturity. Assume the fair value of a comparable non-convertible liability (at an assumed market rate of 9%) is €930,000, leaving an €70,000 residual equity component under IFRS.

HGB entries

On issuance: Dr Cash €1,000,000 / Cr Convertible loan liability €1,000,000 (repayment amount). Interest accrues at the contractual 5%: Dr Interest expense €50,000 / Cr Liability (or interest payable) €50,000 per year. On conversion the full carrying amount is transferred: Dr Convertible loan liability / Cr Subscribed capital and Cr Capital reserve.

IFRS entries

On issuance: Dr Cash €1,000,000 / Cr Convertible loan liability €930,000 / Cr Equity, conversion option €70,000. The liability is then accreted to its €1,000,000 redemption amount using the effective interest method, so IFRS interest expense exceeds the 5% nominal coupon. On conversion, the accreted liability is derecognised and transferred to share capital and premium, and the €70,000 equity component is reclassified within equity, with no gain or loss on the equity portion.

Summary impact table

Audit, disclosure and documentation checklist

Auditors expect a coherent file that evidences both the legal effectiveness and the accounting rationale of the instrument. A disciplined closing pack reduces review friction and prevents year-end surprises.

• Executed term sheet and note instrument with a single, unambiguous conversion formula.
• Board and shareholder approvals; for an AG, the conditional capital authorisation.
• Accounting classification memo explaining the HGB and (where relevant) IAS 32 / IFRS 9 treatment.
• Valuation support for the liability/equity split and any embedded derivative, with model inputs.
• Interest accrual and effective-interest schedules.
• Tax memo and, where obtained, any tax ruling or documentation.
• Commercial register filing confirmation for the capital increase on conversion.
• Draft disclosure notes (HGB notes; IFRS 7 / IAS 1 for IFRS reporters).

Common pitfalls and practical tips

• Mis-specified conversion formula. Conflicting cap and discount mechanics create variable-share outcomes that defeat fixed-for-fixed equity treatment.
• Ignoring the embedded derivative test. Variable conversion often requires fair-value remeasurement that teams forget to run each period.
• Failing to split under IFRS. Recording the whole instrument as a liability overstates leverage and understates equity.
• Thin tax documentation. Related-party interest and conversion gains need contemporaneous arm’s-length and restructuring memos.
• Late register filings. A capital increase is not legally effective until registration, creating a legal/accounting date mismatch.
• Overlooking BaFin. Wider offerings may engage prospectus and securities rules that were assumed inapplicable.

Conclusion, next steps

To structure account convertible loan note germany arrangements that survive audit and tax review, align the drafting, the accounting classification and the tax position before closing rather than after. Decide the fixed-for-fixed question, run the embedded-derivative test, prepare the HGB and IFRS memos side by side, and build the commercial-register timeline into your checklist. The immediate actions are clear: lock the conversion formula, document the classification rationale, obtain valuation support for any split, and assemble the audit-ready closing pack. For dual reporters, reconcile the HGB and IFRS figures early so that interest expense and classification differences are understood and explained.

Handled this way, the convertible loan note delivers its intended commercial flexibility without the reporting surprises that so often accompany it.

For further reading, see Accounting & Reporting in Germany: HGB vs IFRS, the Germany, Corporate Finance practice area, and convertible securities resources.

Sources

1. Handelsgesetzbuch (HGB), full text (Gesetze im Internet)
2. IFRS Foundation, IAS 32 (Financial Instruments: Presentation)
3. IFRS Foundation, IFRS 9 (Financial Instruments)
4. IFRS Foundation, IFRS 7 and IAS 1 (disclosure requirements)
5. Bundesanstalt für Finanzdienstleistungsaufsicht (BaFin)
6. Bundesministerium der Finanzen (BMF)
7. Bundesfinanzhof (Federal Fiscal Court, BFH)
8. Deutsche Rechnungslegungs Standards Committee (DRSC)
9. European Commission, Company reporting and auditing