Top Business Law Firms In Finland For 2027

Last updated: November 14, 2026

The best business law firms in Finland for 2027 are Roschier, Krogerus, Avance, Hannes Snellman, Borenius, Castrén & Snellman, White & Case, DLA Piper Finland, Waselius and Dottir Attorneys. Avance, Krogerus and Roschier are in Band 1 for Corporate/M&A in Chambers Europe 2026, Castrén & Snellman is Band 1 for dispute resolution, and Dottir is known for venture deals.

Helsinki’s leading firms handle most of Finland’s large M&A, finance and disputes work, usually in English.

How We Chose

We used Chambers Europe 2026 rankings for Finland, checked each firm’s strongest practices, and ordered them by ranking breadth. Read more about how we research and rank companies.

Finnish Business Law Firms At A Glance

Company	Based In	Best For	Key Fact
Roschier	Helsinki	Cross-border M&A and employment	Band 1 for Corporate/M&A in Chambers Europe 2026
Krogerus	Helsinki	M&A, finance and competition	Band 1 in three Chambers practices
Avance	Helsinki	Mid-to-large M&A	Band 1 for Corporate/M&A in 2026
Hannes Snellman	Helsinki	Finance, disputes and VC deals	Band 1 for Finance and Dispute Resolution in 2026
Borenius	Helsinki	Private equity transactions	Band 2 for Corporate/M&A
Castrén & Snellman	Helsinki	Litigation and arbitration	Band 1 for Dispute Resolution
White & Case	Helsinki	Public M&A and capital markets	Band 1 for Capital Markets in Finland
DLA Piper Finland	Helsinki	Cross-border deals for international clients	Band 3 for Corporate/M&A
Waselius	Helsinki	Corporate and finance work	Band 3 for Corporate/M&A
Dottir Attorneys	Helsinki	Funding rounds and startups	Ranked for Corporate/M&A in Chambers

Best Business Law Firms In Finland For 2027

1. Roschier — Top-Tier Nordic Firm For Cross-Border Work

Roschier is in Band 1 for Corporate/M&A and is widely used by international firms for Finnish law input on major deals. It is also top-ranked for employment.

Choose it for complex international transactions.

2. Krogerus — Band 1 For M&A, Banking And Competition

Krogerus is in Band 1 for Corporate/M&A, Banking & Finance and Competition in Chambers Europe 2026.

It suits buyers who need finance and competition advice together.

3. Avance — Band 1 Corporate Firm For Domestic And Cross-Border Deals

Avance is in Band 1 for Corporate/M&A and frequently handles transactions with cross-border elements.

Choose it for a strong corporate team at a focused firm.

4. Hannes Snellman — Finance, Disputes And Venture Deals

Hannes Snellman holds Band 1 rankings for finance and dispute resolution and is active in venture capital and TMT deals.

It suits growth companies and lenders.

5. Borenius — Private Equity Specialists

Borenius advises on complex corporate matters, with particular strength in private equity transactions.

Choose it for PE-backed deals.

6. Castrén & Snellman — Band 1 Dispute Resolution Practice

Castrén & Snellman is Band 1 for dispute resolution and ranked across several other practices.

Pick it when a dispute is on the table.

7. White & Case — Global Firm With A Strong Helsinki Office

White & Case’s Helsinki office handles public M&A, tender offers and capital markets work.

It suits listed companies and IPOs.

8. DLA Piper Finland — Global Network With Finnish Corporate Team

DLA Piper Finland gives clients access to a global network for cross-border transactions.

Choose it for multi-country deals.

9. Waselius — Focused Corporate And Finance Firm

Waselius is a focused Helsinki firm ranked for corporate and finance work.

It suits clients wanting partner-led service.

10. Dottir Attorneys — Venture Capital And Startup Specialists

Dottir Attorneys is widely recognised for venture capital deals and funding rounds.

Choose it for startup financings.

How To Choose A Business Law Firm In Finland

What Kind Of Matter Is It?

Match the firm to M&A, financing, disputes or employment.

Is The Deal Cross-Border?

Firms with strong international networks help on multi-country deals.

Who Will Do The Work?

Ask which partner leads and who handles daily work.

How Are Fees Set?

Ask about hourly rates, caps and fixed fees.

Frequently Asked Questions

Which are the top law firms in Finland?

Avance, Krogerus and Roschier are in Band 1 for Corporate/M&A in Chambers Europe 2026.

Which firms are best for disputes in Finland?

Castrén & Snellman and Hannes Snellman hold Band 1 rankings for dispute resolution.

Do Finnish lawyers work in English?

Yes. Leading Helsinki firms routinely advise in English.

Conclusion

Finland’s legal market is led by a small group of strong Helsinki firms. For tax and audit, see the top accounting firms in Helsinki, and explore the Finland hub.