FastBill

FastBill carved out its niche by focusing on what freelancers and small agencies do most frequently: send invoices and manage receipts. While other German accounting tools try to cover the full bookkeeping spectrum, FastBill keeps the emphasis on document management — creating professional invoices quickly, capturing receipts automatically, and keeping everything organized for your tax advisor. For agencies that handle their own invoicing but leave bookkeeping to a Steuerberater, this focused approach eliminates unnecessary complexity.

The invoicing workflow is where FastBill genuinely earns its name. Creating and sending an invoice takes just a few clicks, with templates that maintain consistent branding across all client communications. Recurring invoices for retainer clients can be automated entirely, and the system tracks which invoices are outstanding and sends payment reminders. Receipt capture works via email forwarding or the mobile app, with the system extracting key data points automatically.

Compared to sevDesk or Lexoffice, FastBill is more limited in its accounting capabilities but more refined in its core invoicing and document management features. Agencies that need full bookkeeping, VAT returns, and profit/loss reporting will find sevDesk more complete. But for freelancers and very small agencies that primarily need to send invoices, track expenses, and keep their tax advisor supplied with clean documents, FastBill's simplicity is a feature, not a limitation.