kallman

What kallman does

kallman GmbH is a German boutique consulting firm specializing in VAT (value-added tax) and indirect-tax processes within SAP ERP and SAP S/4HANA environments. Headquartered in Eckental, Bavaria, the firm employs seven people and is led by three Managing Directors — Lars Bohn, Nils-Oliver Boldt, and Clemens Reuter — registered at the Fürth commercial register (HRB 21483). The portfolio is organized as a unified consulting offering across nine modules: VAT in SAP (core implementation and configuration), Add-ons and Tax Engines (supplementary tax-engine integrations), VAT Reporting, E-Invoicing, Tax Process Automation, Custom Solutions, Data Analysis, Using Artificial Intelligence, and Events. Delivery is project-based professional services, structured as time-and-materials or fixed-scope engagements rather than packaged SaaS, with no public pricing disclosed.

The firm serves large enterprise customers across the DACH region, with named reference clients spanning mining (K+S), specialty chemicals (Lanxess), industrial engineering (Bilfinger), heating manufacturing (STIEBEL ELTRON), energy (Vattenfall), agricultural trading (Raiffeisen Waren), industrial safety (R. Stahl), medical technology (Drägerwerk), energy transmission (TenneT), and food manufacturing (Hochland). Go-to-market is consultative enterprise field sales, targeting finance, tax, and IT leadership at corporations with complex SAP landscapes and EU VAT obligations; the firm invests in top-of-funnel thought leadership through a German-language blog and Events/Knowledge Sharing practice. Differentiation rests on narrow domain specialization in legally compliant ('gesetzeskonforme') VAT processes, deep familiarity with the SAP standard plus add-on/tax-engine integrations, and the ability to deliver custom SAP development for complex tax scenarios — including emerging AI-augmented tax determination advisory.

The business is a self-funded private limited company with no disclosed funding rounds, no parent company, no subsidiaries, and no M&A history. Revenue is not publicly disclosed; based on headcount of seven specialist consultants serving premium enterprise clients on project-based engagements, the implied annual revenue band is in the low single-digit millions of USD, with high customer concentration risk given the small delivery capacity relative to the size of named logos.

Name

kallman

Legal name

kallman GmbH

Website

https://kallman.consulting

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

kallman is a seven-person German boutique consultancy specializing in VAT and indirect-tax process implementation within SAP ERP and SAP S/4HANA, serving large enterprise clients across the DACH region via project-based professional services.

Ownership category

akta.pro rank

Headquarters

HQ city

Eckental

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. SAP Tax Consulting and Implementation Services: Professional services engagements covering the implementation, configuration, and customization of VAT processes within SAP ERP and S/4HANA environments, including both standard SAP configuration and add-on/tax engine deployments.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

kallman is a boutique consulting firm that implements and automates VAT (value-added tax) and tax processes within SAP ERP and SAP S/4HANA environments for large German enterprises. Its core deliverable is professional services spanning VAT configuration in the SAP standard, integration of add-ons and tax engines, legally compliant VAT reporting, e-invoicing, tax process automation, custom SAP development, SAP tax data analysis, and the application of AI techniques to SAP tax determination.

Product overview

kallman is an SAP consulting firm specializing in secure VAT (value-added tax) processes. The company's offering is organized as a unified consulting and services portfolio centered on SAP systems (SAP ERP and SAP S/4HANA), encompassing nine core service areas: VAT in SAP as the foundational capability, supplemented by Add-ons and Tax Engines for extended functionality, VAT Reporting, E-Invoicing, Tax Process Automation, Custom Solutions for tailored development, Data Analysis, Using Artificial Intelligence for emerging AI-enhanced tax determination, and Events for knowledge sharing. The portfolio follows a consulting-led approach rather than a packaged software model, providing services ranging from standard SAP configuration to custom development and AI implementation.

Differentiator

Problem solved

Functional benefit

Products and services

• VAT in SAP (Umsatzsteuer in SAP)

Named customers10 records

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Scale indicators1 record

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• EY: EY's SAP-enabled tax services and indirect-tax practice serve many of the same DACH enterprise clients as kallman, with a much broader resource base and global delivery model.
• PwC: PwC's tax practice includes significant SAP tax compliance and transformation capabilities for large German and multinational clients, making it a scaled competitor to kallman's boutique offering.
• Deloitte: Deloitte operates one of the largest SAP tax practices globally, serving multinational enterprises on VAT compliance, e-invoicing and S/4HANA migration — directly overlapping kallman's niche with materially larger scale.
• Wolters Kluwer: Through its Tax & Accounting division (CCH, OneSource), Wolters Kluwer offers enterprise tax compliance suites with SAP integration. It is a broader incumbent that competes with kallman in large enterprise SAP tax engagements.

Direct peers

• msg systems AG: msg is a German-based IT and SAP consulting group serving enterprise and regulated industries in DACH. It competes with kallman for SAP tax and finance transformation engagements at a similar regional scale, though with a much broader portfolio.
• Avalara: Avalara provides automated tax compliance (VAT, sales tax, e-invoicing) including SAP connectors. It is an emerging competitor in the same VAT-in-SAP category that kallman services, shifting demand from advisory hours toward software subscriptions.
• Sovos: Sovos offers global tax compliance software with deep SAP integration for VAT, e-invoicing and reporting. It overlaps directly with kallman's compliance and e-invoicing services and is a key alternative for SAP customers evaluating specialist support.
• Vertex, Inc. Vertex provides tax technology solutions — including tax engines — tightly integrated with SAP ERP and S/4HANA. As a SAP tax-engine vendor, Vertex competes most directly with kallman's add-on and tax-engine integration practice for the same enterprise customers.
• Natuvion (part of Accenture): Natuvion is a German-origin SAP data and process transformation specialist, now part of Accenture. It addresses overlapping SAP S/4HANA migration and tax/finance process work for DACH enterprise clients.

Regional players

• DATEV eG: DATEV is the dominant German tax/accounting software cooperative used by tax advisors and mid-market companies. It is a regional incumbent in the DACH tax-compliance ecosystem in which kallman operates, with different target customers but overlapping technology scope.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/kallman

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 kallman