BULGARIA Trends and Developments Contributed by: Todor Banchev Todorov and Victoriya Grishina, Banchev and Grishina Law Firm
Pillar Two framework, including a qualified domestic minimum top-up tax. Where the jurisdictional effec - tive tax rate falls below 15%, a domestic top-up tax is triggered. The regime introduces technical complexity in cal - culating effective tax rates, reconciling account - ing standards (Bulgarian GAAP or IFRS), deferred tax positions and group consolidation adjustments. Recent legislative clarifications have refined calcula - tion bases and reporting timelines. Beyond increased effective taxation, the regime is expected to become a focal point in audits. The interplay between local computations and group-level reporting creates scope for interpretative disputes, particularly regarding covered taxes, the allocation of profits and the treatment of temporary differences. As cross-border information exchange expands, coor - dinated audit activity across jurisdictions becomes more likely. Proactive documentation of methodolo - gies, assumptions and reconciliation processes is essential not only for compliance but also for dispute mitigation. Amendments to the Local Taxes and Fees Act Amendments effective from 1 January 2026 introduce material changes to municipal taxation, expanding local discretion and increasing the likelihood of admin - istrative disputes. The reform of the household waste collection fee abolishes the traditional property-value-based model and permits calculation based on indicators of actual waste generation in line with the polluter-pays prin - ciple. Although environmentally aligned, the reform allows divergent municipal methodologies, raising proportionality and evidentiary concerns. For businesses with substantial real estate portfolios or logistics operations, fee determinations may mate - rially affect operating costs. Differences in municipal interpretation may give rise to appeals based on legal - ity, equal treatment or methodological consistency. Similarly, linking motor vehicle tax to Euro 7 emission standards embeds environmental criteria into local
taxation. Classification disputes and evidentiary chal - lenges may arise where documentation or categorisa - tion is contested. The combination of expanded discretion, euro-related fiscal adjustments and budgetary fallback mecha - nisms increases procedural complexity and the poten - tial for litigation. EU Carbon Border Adjustment Mechanism (CBAM) The EU Carbon Border Adjustment Mechanism became fully operational on 1 January 2026, introduc - ing a carbon pricing obligation on imports of specified carbon-intensive goods, including cement, iron and steel, aluminium, fertilisers, electricity and hydrogen. Importers must calculate embedded emissions and surrender corresponding CBAM certificates, aligning carbon costs with the EU Emissions Trading System. The regime increases cost exposure and compliance obligations, particularly for supply chains reliant on third-country inputs. CBAM reinforces a broader trend toward integrating environmental criteria into tax and regulatory frame - works. Emissions data accuracy, supplier transpar - ency and documentation integrity will become central compliance priorities. Given the financial implications, disputes may arise over: • calculation methodologies; • verification standards; and • allocation of carbon costs across contractual chains. Conclusion: Convergence, Digitalisation and Intensified Scrutiny Taken together, these developments signal a struc - tural transformation of Bulgaria’s tax and regulatory landscape. The introduction of the euro, implemen - tation of SAF-T reporting, modernisation of transfer pricing rules, expansion of fiscal control mechanisms, adoption of the 15% global minimum tax, reform of municipal taxation, and operationalisation of CBAM collectively reflect convergence with EU and OECD standards and a decisive shift toward data-driven, substance-focused enforcement.
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