Sofia is not only Bulgaria's administrative capital — more than half of the country's active companies are registered here. If you plan an EOOD or OOD with a seat in the capital, you will file into the busiest Commercial Register workload, but you also get the densest network of notaries, banks and accounting firms. For IT, fintech, consulting and trade, a Sofia address is often a credibility signal for clients and investors.

The legal process matches the rest of the country: founding documents, escrow account, notarised specimen signature and application A4. The difference is logistics — you can usually finish the specimen around the Palace of Justice or Sofia Business Park in one working day, and escrow accounts open at dozens of branches on Vitosha Blvd., Tsarigradsko Shose and near the NDK. E-filing with a QES remains the fastest path; paper filing is slower and more expensive.

The registered office must have a legal basis for use (lease, ownership or owner consent). Office rents in Sofia are higher than elsewhere, so many startups begin in co-working or compliant virtual offices. After the UIC, NAP notification, an operating bank account and optional VAT registration are easier thanks to the concentration of institutions and partners in the capital.

Local amendment notes:

• High TR volume can extend review when attachments are incomplete — double-check name and ID numbers before filing
• The management address must be genuinely usable; a mailbox without a use right leads to refusal
• Peak periods (month-end) overload notaries near the Palace of Justice — book an appointment

In Sofia, amendments are filed with an A4 application to the Registry Agency. The deadline is 7 days after the governing body's resolution.

Sofia (over 1.3 million residents) is the capital and largest business hub in Bulgaria, home to over 60% of all registered companies in the country. The city has over 180,000 registered companies, making it an active business centre.

Key Industries:

• IT & Outsourcing
• Finance & Insurance
• Wholesale Trade
• Consulting Services

Office Rents: Average office rents in Sofia are €8–20/sq.m., which is competitive compared to other cities in the region.

Bank Branches: UniCredit Bulbank, DSK Bank, Postbank and UBB have central branches on Vitosha Blvd., Tsarigradsko Shose Blvd. and near the National Palace of Culture.

Notary Offices: The highest concentration of notary offices is around the Palace of Justice on Vitosha Blvd., along Dondukov Blvd. and in Sofia Business Park.

The most common amendments requiring an A4 filing are:

• Change of address — when relocating the registered office or management address in Sofia
• Change of manager — appointing a new or releasing a current manager
• Change of capital — increase or decrease of the registered capital
• Change of name — availability must be checked in the CR before filing
• Change of business activity — expanding or narrowing the registered scope of activity
• Euro conversion — announce an updated founding act / articles (usually G1 or A4; see the euro conversion guide)

Steps to file an amendment in Sofia:

1. Adoption of a resolution by the governing body (minutes or manager's resolution)
2. Preparation of the A4 application and accompanying declarations
3. Notarisation of specimen signature (if changing the manager)
4. Filing with the Registry Agency — online with a QES or at the counter