A Decade with Our Clients

Siller
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    • Overview
    • Expertise
    • Industries
    • About Us
      • Our Firm
      • Our Story
      • Our People
      • Our Presence
      • Our Work
      • Our Principles
  • Overview
  • Expertise
  • Industries
  • About Us
    • Our Firm
    • Our Story
    • Our People
    • Our Presence
    • Our Work
    • Our Principles

Business & Management Consulting

At Siller Advisory, we support organizations in strengthening strategy, performance, and management effectiveness. Our business and management consulting services focus on practical decision support and execution‑ready analysis, helping leaders address complex operational and organizational challenges with clarity and confidence.


Where appropriate, we work alongside other advisory disciplines within Siller Advisory to ensure that strategic, financial, regulatory, and operational considerations are addressed in a consistent and transparent manner. This integrated approach enables clients to move forward with discipline, alignment, and measurable results.

OUR EXPERTISE

Business Consulting Services

We help companies design strategies for expansion, innovation, or restructuring. Our goal is to deliver clear direction and measurable results. 


We prepare robust business plans and financial models that support financing, investor talks, or expansion. Clients receive clear ROI projections and actionable roadmaps.


We provide independent asset valuation services for energy generation, industrial production, and commodity-intensive operations, supporting investment, acquisition, and restructuring decisions.


Scope and limitation: valuations are prepared for investment and advisory purposes only. Statutory, tax, or collateral valuations under local law are not included in our scope. Where local certification or licensing is required, we ensure compliance by involving qualified local experts and licensed valuers.


We analyze markets, customers, and competitors to define winning entry strategies. Whether in Austria or abroad, we reduce risks and highlight opportunities.


We optimize supply chains to improve efficiency, resilience, and cost-effectiveness across every stage of operations. We help businesses build transparent, sustainable, and adaptive supply networks. 


We deliver long-term (up to 30 years) price forecasts and benchmarks for energy and raw materials. This allows clients to plan procurement, hedging, and investments with confidence.


OUR EXPERTISE

Business Consulting Services

Deliverables

  • Strategic business plans with financial projection
  • Operational models and process optimization roadmaps
  • Market entry and growth strategy reports 
  • Implementation support and KPI dashboards 
  • Board-ready presentations and documentation

Who Benefits

  • Founders and executive teams planning growth or restructuring
  • CFOs and finance departments needing robust financial models
  • Corporate development and M&A units
  • Operations and supply chain leaders seeking efficiency gains
  • Investors and stakeholders requiring validated business cases

Siller Academy

While our consulting projects deliver concrete strategies and models, Siller Academy extends this work into capability building, ensuring that teams gain the skills and understanding to implement what we design together.

Explore Siller Academy
OUR EXPERTISE

Management Consulting Services

We provide early-stage guidance for projects and investments. Deliverables include feasibility studies, risk maps, and financial valuations — enabling confident “Go/No-Go” decisions.


We help businesses manage risks and ensure compliance with laws, regulations, and internal standards. We strengthen governance and build resilience for sustainable success. 


We conduct full verification for concrete projects, acquisitions, or investments. Our experts assess commercial, legal, technical, financial, and ESG factors, ensuring projects are bankable and investment ready.


We support mergers, acquisitions, and transactions end-to-end. From valuation and SPA negotiations to deal structuring and integration, we optimize value and protect client interests.


We adapt our frameworks for Renewable Energy, Industrial Real Estate, Agriculture, Retail, and Energy-Intensive Industries. Each project benefits from tailored analysis and compliance to ensure long-term success.


Deliverables

  • Strategic transformation roadmaps and execution frameworks
  • Organizational design and governance structures
  • Performance improvement and cost optimization programs 
  • Risk and compliance assessments with actionable mitigation plans 
  • Executive-level reporting packs and decision briefs

Who Benefits

  • Boards and executive teams steering organizational change
  • CEOs and COOs needing independent, senior-level guidance
  • CFOs and finance leaders aligning strategy with capital planning
  • Business unit heads driving performance improvement
  • Investors and stakeholders seeking assurance on management effectiveness

Siller Academy

While our consulting projects deliver concrete strategies and models, Siller Academy extends this work into capability building, ensuring that teams gain the skills and understanding to implement what we design together.

Explore Siller Academy

Meet Our Business and Management Consulting Advisory Leaders

László Siller

Katharina Kreuzer

László Siller

 Managing Partner, Valuation & Strategy 

Ágnes Péter

Katharina Kreuzer

László Siller

 Managing Partner, Client Engagement

Katharina Kreuzer

Katharina Kreuzer

Katharina Kreuzer

 Partner, International Tax & Restructuring

Kasper Walet

Katharina Kreuzer

Katharina Kreuzer

 Partner, Legal, Compliance & Risk 

Insights, Reports & Research

Explore All Insights

Our Work in Action

Explore a selection of our recent projects that reflect how Siller applies analytical thinking and practical expertise to complex business challenges.

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Siller — Established 2015 Austria


Company Name: Siller Handels GmbH

Address: Gemeindeweg 47, 3422 Altenberg, Austria

Company Register Number: FN 442495 d

VAT Number: ATU69992868

info@siller.gmbh


Siller is the consulting brand of Siller GmbH.


Siller GmbH is a limited liability company under Austrian law. The information provided on this website is for general informational purposes only and does not constitute professional advice. Siller GmbH accepts no liability for any actions taken based on this information. 


© 2015–2026 Siller GmbH. All rights reserved.

Clarity. Direction. Results.