Lars Siegert

Founder of German Business Buddy

Lars Siegert is the founder of German Business Buddy and a start-up and business mentor for international professionals in Germany. Based in Berlin, he draws on 10+ years of experience in management consulting and business development to guide skilled expats through every step of building a freelance or self-employed business — from shaping their idea and registering their business, to understanding taxes, winning clients, and handling German bureaucracy with confidence.

German Business Buddy was born from a personal experience: Lars helped his Mexican wife start her freelance career in Germany. Since then, he has supported countless international professionals in turning their skills into sustainable, fulfilling businesses.

Upcoming talks

Tax & Accounting Made Simple for English-Speaking Freelancers

June 11, 2026 10:30

Taxes and bookkeeping feel like intimidating hurdles for international freelancers and sole proprietors with little to no tax or accounting experience. This session strips away the jargon and delivers a clear, practical guide to setting up your accounting and tax workflow from scratch.

You'll learn how to manage your finances, meet deadlines, write compliant invoices, organize documents digitally, and choose the right tools without unnecessary complexity. Designed specifically for beginners with sole proprietorships, this talk focuses on what matters most and what is often overlooked.