Steuerberatung Sommerstedt

What Steuerberatung Sommerstedt does

Steuerberatung Sommerstedt is a private, founder-owned tax advisory practice based in Kiel, Schleswig-Holstein, founded in 2019 by Stefanie Sommerstedt. The firm operates as a sole proprietorship with a core team of approximately five people, including the lead Steuerberaterin, an IT specialist (Informatiker), a Steuerfachangestellte, and a Bilanzbuchhalterin. It serves growth-oriented SMBs across Germany — primarily in IT/software, trade and construction, industry/production, and services — with a stated emphasis on proactive, 360-degree advisory rather than transactional compliance work.

The service portfolio spans digital accounting (Digitale Finanzbuchhaltung), digital payroll processing with cloud-based personnel files (Digitale Lohnbuchhaltung), annual financial statements prepared monthly during the year, corporate and personal tax returns, strategic tax planning, business consulting (liquidity management, controlling, financial planning), and process consulting. The underlying technology is DATEV cloud-based, with integrations into Lexware Office, GetMyInvoices (10,000+ portals), AccountOne, JTL ERP, PayPal DATEV payment service, and branch-specific software. Collaboration with clients is conducted digitally through DATEV Unternehmen Online, enabling location-independent advisory including with clients located approximately 1,000 km away. The 'Sommerstedt-System' is a five-step methodology (understand client, implement commercial structures, optimize tax, establish efficient processes, continuous sparring) that is positioned as the firm's core advisory framework.

The firm generates revenue through recurring monthly professional service fees for ongoing accounting, payroll, and advisory, supplemented by project-based consulting engagements. Pricing is not publicly disclosed, and new clients must complete a qualification interview (Qualifizierungsgespräch) before engagement. Success is signaled by four consecutive 'Exzellenter Arbeitgeber' awards (2023-2026), Handelsblatt/SWI Finance 'Beste Steuerberater' rankings in 2025 and 2026, continuous 'Digitale DATEV-Kanzlei' status since 2020, Lexware TOP-Kanzlei status since 2022, and BAFA consultant certification. The firm has no external funding, no parent company, and no disclosed M&A history.

Name

Steuerberatung Sommerstedt

Legal name

Steuerberatung Sommerstedt

Website

https://sommerstedt.de

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Short description

Steuerberatung Sommerstedt is a digital-first, founder-owned tax advisory practice in Kiel serving growth-oriented SMBs across Germany with proactive accounting, payroll, tax, and business advisory services delivered via DATEV cloud integrations.

Ownership category

akta.pro rank

Product category

Tax Advisory Services

NAICS

Accounting, Tax Preparation, Bookkeeping, and Payroll Services (5412), Payroll Services (541214)

SIC

Services-Management Services (8741)

akta.pro primary industry

Financial Reporting & Technical Accounting Advisory (GAAP/IFRS) (BPAHABAF)

akta.pro secondary industry

Expense Management & Reimbursements Administration (BPACAIAH)

Keywords

• Digital tax advisory
• Financial accounting services
• Payroll processing
• Business consulting
• Annual financial statements

Headquarters

HQ city

Kiel

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Others

Revenue model

1. Professional tax and advisory services: Recurring professional services including digital accounting, payroll processing, annual financial statements, tax returns, and business consulting. Revenue derived from ongoing client relationships with monthly/quarterly service fees, supplemented by project-based consulting engagements.
2. Business consulting engagements: Process consulting, strategic tax planning, liquidity management, controlling, and financial planning services. Project-based or retainer arrangements for specialized advisory.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Steuerberatung Sommerstedt is a proactive tax advisory firm offering digital financial accounting, payroll processing, annual financial statements, corporate and personal tax returns, business consulting, and process advisory. All services are delivered through DATEV cloud-based digital collaboration, enabling real-time financial visibility and location-independent client engagement for growth-oriented companies across Germany.

Product overview

Steuerberatung Sommerstedt is a proactive tax advisory firm based in Kiel, Germany, operating as a single integrated practice rather than a platform-plus-modules architecture. The core offering centers on digital accounting, payroll processing, annual financial statements, and corporate tax returns, supported by business advisory, process consulting, and strategic tax advisory services. The portfolio includes specialized offerings for trade and construction businesses, digital collaboration for Lexware Office users, and personal tax return preparation. All services are delivered through digital, DATEV-based processes, with client collaboration via DATEV Unternehmen Online and integrations with tools such as GetMyInvoices, AccountOne, JTL ERP, and PayPal.

Differentiator

Problem solved

Functional benefit

Products and services

• Digitale Finanzbuchhaltung (Digital Financial Accounting)

Quantifiable outcome

• Digital transformation enabling 100% remote collaboration with clients located 1,000+ km away
• +1 more outcomes

Named customers6 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature4 records

Partnerships

17 partnerships are on record, tiered minor, core and supporting.

• Wirtschaftsförderung NordfrieslandminorGTM or Marketing Partner · 18 March 2025Economic development agency for North Frisia region. Co-hosted e-invoicing seminar with IHK Flensburg on March 18, 2025.
• IHK FlensburgminorGTM or Marketing Partner · 18 March 2025Chamber of Industry and Commerce Flensburg. Co-hosted e-invoicing seminar with Wirtschaftsförderung Nordfriesland on March 18, 2025.
• Technische Akademie NordminorGTM or Marketing Partner · 10 July 2024Technical Academy North. Stefanie Sommerstedt presented at FutureTalk 2024 on 'The Way to the Paperless Office' in cooperation with DIWISH.
• Förster ITminorGTM or Marketing Partner · 21 June 2023IT services company. Co-organized 'Beyond Paper' event at DATEV Niederlassung Kiel on June 21, 2023.
• DiWiSH (Digitale Wirtschaft Schleswig-Holstein)minorGTM or Marketing Partner · 12 May 2023Digital Economy Schleswig-Holstein association. Co-hosted Digital Week 2023 event and ongoing seminar series on digital transformation.
• WTSH (Wirtschaftsförderung und Technologietransfer Schleswig-Holstein)minorGTM or Marketing Partner · 27 October 2020Economic development agency for Schleswig-Holstein. Co-hosted webinar series on 'Digital Transformation' including the October 2020 seminar on paperless accounting.
• DATEV eGcoreTechnology or IntegrationPrimary technology partner providing the cloud infrastructure for digital accounting and client collaboration. DATEV Unternehmen Online serves as the central platform for document management, financial reporting, and seamless data exchange between Sommerstedt and clients.
• Lexware (Haufe)coreTechnology or IntegrationCertified 'Lexware TOP-Kanzlei' partner with extensive experience in Lexware Office solutions. Enables seamless data transfer for clients using Lexware for their daily accounting, with automatic integration into Sommerstedt's processes.
• GetMyInvoicessupportingTechnology or IntegrationAutomated invoice retrieval from over 10,000 portals, email inboxes, and apps. Invoices are automatically collected and transferred directly into accounting, including e-invoices.
• AccountOnesupportingTechnology or IntegrationSpecialized solution for online retailers for automated preparation of sales and payment data for DATEV. Streamlines e-commerce accounting workflows.
• JTLsupportingTechnology or IntegrationERP system for online commerce providing inventory, purchasing, sales, and shipping management. Data is structured for accounting and integrated into the DATEV workflow.
• PayPal (DATEV Payment Data Service)supportingTechnology or IntegrationAutomatic transfer of payment data into accounting through DATEV integration. Eliminates manual assignment, reducing effort and error sources.
• Steuerberaterverband Schleswig-HolsteinsupportingOthersProfessional association membership providing access to industry developments, professional standards, and network resources. Awards the 'Exzellenter Arbeitgeber' certification.
• Steuerberaterkammer Schleswig-HolsteinsupportingOthersChamber of Tax Advisors - statutory regulatory body for tax professionals in Schleswig-Holstein. Responsible for professional supervision and licensing.
• Steuerberaterverband HamburgsupportingOthersProfessional association membership in Hamburg region for networking and professional development.
• DIWISH e.V.supportingOthersDigital Economy Schleswig-Holstein association. Sommerstedt participates in joint events and knowledge sharing in the digital economy community.
• Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA)coreOthersFederal Office for Economic Affairs and Export Control. BAFA certification qualifies Sommerstedt to provide quality-assured advisory services under government subsidy programs.

Scale indicators3 records

Recent moves6 records

Expansion highlights10 records

Emerging players

• sevDesk: German cloud accounting and invoicing platform for SMBs and freelancers; competes for the same digital-first client segment and could disintermediate advisors by enabling self-service bookkeeping at lower price points.
• lohn24.de: Online payroll service targeting German SMBs with semi-automated payroll processing; partial overlap with Sommerstedt's digital payroll offering at the lower-cost, more automated end of the spectrum.
• Taxfix: Berlin-based consumer tax filing app targeting private individuals and freelancers in Germany. Different delivery model (app-first vs. advisory-led) but addresses the same digitization of German tax services and competes for adjacent mind share.
• FastBill: German SaaS for invoicing, accounting, and tax prep automation targeting SMBs and freelancers; overlaps with Sommerstedt's Lexware-user segment and represents the self-service trend in German SMB bookkeeping.

Broad incumbents

• ETL (ETL Steuerberatungsgesellschaft): Germany's largest tax advisory group with hundreds of affiliated Kanzleien nationwide, offering the same core mix of digital accounting, payroll, and advisory for SMBs as Sommerstedt — but at vastly greater scale and brand reach.
• Ebner Stolz: Top-10 German full-service tax and audit advisory firm with Mittelstand focus, offering digital accounting, payroll, and business consulting — comparable in service mix to Sommerstedt but materially larger and more diversified.
• WTS Steuerberatungsgesellschaft: Mid-sized German tax advisory firm with national presence serving corporate and SMB clients across accounting, payroll, and strategic tax planning — a broader incumbent operating in Sommerstedt's core service categories.

Others

• Lexware (Haufe Group): Provider of Lexware Office accounting software and the issuing body of the Lexware TOP-Kanzlei certification held by Sommerstedt. Enables the integration-driven client workflow central to Sommerstedt's model and is a partial competitor in self-service bookkeeping.
• DATEV eG: Germany's dominant tax-advisor software cooperative that provides the cloud infrastructure, client portals, and integrations Sommerstedt relies on. Not a competitor but a critical ecosystem dependency and gatekeeper of the SMB tax-software stack.
• GetMyInvoices (fiskaly): Invoice capture and automation platform integrated into Sommerstedt's DATEV workflow; represents the broader fintech infrastructure stack serving German digital accounting practices.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks2 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@SteuerberatungSommerstedt
• Facebookfacebook.com/SteuerberatungSommerstedt
• LinkedInlinkedin.com/company/steuerberatung-sommerstedt
• Instagraminstagram.com/steuerberatungsommerstedt

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Steuerberatung Sommerstedt