Skip to content

Financial Modelling & Cash Flow Forecasting Services

Custom Excel models that turn business plans into investment-grade financial tools

Need clarity on cash flow, capital needs, or investor returns? I build robust, tailored financial models in Microsoft Excel or Google Sheets that make your numbers speak—whether you’re planning infrastructure, launching a subscription business, or raising capital.

📊 My Models

My models are more than just Excel files—they’re strategic tools designed to clarify, convince, and guide decisions.

🧠Built Around Your Business
Structured around real-world drivers—user growth, pricing, churn, CAPEX, revenue streams, and fundraising.

📈Forecasts from Start to Finish
Integrated P&L, Cash Flow, and Balance Sheet, linked to editable assumptions so every update flows through automatically.

🔍Detailed Revenue & Cost Breakdown
Split by service, customer cohort, or region. Model churn, ARPU, CAC, LTV, margins, and more.

⚙️Scenario Analysis & Stress Testing
Change market reach, pricing, costs or churn—and instantly see impact on IRR, payback, and funding gaps.

📊Investor-Ready Dashboards & KPIs
Includes IRR, NPV, EBITDA, terminal value, and breakeven—plus charts and summaries built for pitch decks.

💸Debt & Equity Modelling
Model capital structure, loan tranches, repayments, interest-only periods, and equity injections.

jacek photo

🛠️ How I Work

  • Discovery call to understand your business model, goals, and what the model needs to deliver
  • Custom spreadsheet built from scratch using clear, modular logic
  • Includes a walkthrough and post-delivery support
  • Delivered in Excel or Google Sheets—ready to plug into your deck or share with your team

📌 Use Cases

📁 Download Sample Templates

Want to see my modelling style in action?

Each template showcases the structure, clarity, and flexibility I bring to client models.

One of the smartest people that I have worked with

Jacek is one of the smartest people that I have worked with. His ability to provide huge swathes of in-depth analysis are impressive to say the least and his brain is seemingly able to compute huge amounts of data whilst his Excel skills are second to none. He is also a really great guy and I am confident that he would be an invaluable asset to any company.

James Kaye, Director and Co-Founder at Big Ideas Machine

ChallengeJP Excel and Data Consulting Services
5
2020-04-08T12:29:41+02:00

James Kaye, Director and Co-Founder at Big Ideas Machine

Jacek is one of the smartest people that I have worked with. His ability to provide huge swathes of in-depth analysis are impressive to say the least and his brain is seemingly able to compute huge amounts of data whilst his Excel skills are second to none. He is also a really great guy and I am confident that he would be an invaluable asset to any company.

A very competent and detailed financial analyst

I have worked closely with Jacek during intensive periods of financing, needed to fund the growth of CityFibre PLC. Jacek's work was pivotal to the success of these initiatives. He is a very competent and detailed financial analyst and his work is not only reliable but creative. Extremely hardworking and intelligent guy. I enjoyed working with him.

Peter Manning, Chairman of CityFibre Holdings PLC

ChallengeJP Excel and Data Consulting Services
5
2020-04-08T12:24:20+02:00

Peter Manning, Chairman of CityFibre Holdings PLC

I have worked closely with Jacek during intensive periods of financing, needed to fund the growth of CityFibre PLC. Jacek's work was pivotal to the success of these initiatives. He is a very competent and detailed financial analyst and his work is not only reliable but creative. Extremely hardworking and intelligent guy. I enjoyed working with him.

Highly skilled in financial modelling and complex business case development

Jacek is a real top performer and highly skilled in financial modelling and complex business case development. I worked with him on a number of high value transactions and his expertise was invaluable to deal structuring and closing. Highly Recommended!

Andy Nash, Head of Public Sector and New Cities at CityFibre

ChallengeJP Excel and Data Consulting Services
5
2020-04-10T11:20:52+02:00

Andy Nash, Head of Public Sector and New Cities at CityFibre

Jacek is a real top performer and highly skilled in financial modelling and complex business case development. I worked with him on a number of high value transactions and his expertise was invaluable to deal structuring and closing. Highly Recommended!
5
3
ChallengeJP Excel and Data Consulting Services

Get in Touch

  • Your data will be processed in accordance with the Privacy Policy.