What is a Cashflow Model - and why it matters for your financial future
Jan 8, 2026
Think of it like a financial roadmap: it helps you understand where you're headed and highlights any potential detours or roadblocks before they become problems.
When it comes to making confident financial decisions, clarity is everything. Whether you're planning for retirement, thinking about a big life change, or simply wanting to make the most of your money, understanding your financial future is essential. That’s where a cashflow model becomes incredibly valuable.
In simple terms, a cashflow model is a dynamic, visual projection of your finances - both now and into the future. It helps you see how much money is coming in and going out over time, based on your income, expenses, assets, liabilities, and financial goals. It’s not just about what you have today, but how your financial situation might look 5, 10, 20 or even 30 years from now.
The Benefits of Using a Cashflow Model
A well-constructed cashflow model is one of the most powerful tools in Financial Planning and one Obsidian embrace in our approach. Here are some of the key benefits:
1. Informed Decision-Making
Want to know whether you can afford to retire at 60? Or if you can help your children with a house deposit and still be financially secure? A cashflow model can show you exactly how those decisions could impact your long-term finances. It takes the guesswork out and replaces it with evidence-based answers.
2. Peace of Mind
Seeing your financial future laid out clearly can bring a great sense of reassurance. Whether the news is good or highlights a potential shortfall, at least you know - and can plan accordingly.
3. Helps Set and Achieve Goals
Whether your goals are to pay off your mortgage early, travel the world, or leave a legacy for your family, a cashflow model helps determine whether you're on track to achieve them - and what changes you might need to make if you’re not.
4. Keeps Your Plans Flexible
Life rarely goes exactly to plan - and a cashflow model allows you to adjust assumptions, test different scenarios, and explore "what if" questions. What if inflation rises? What if you downsize your home? What if investment returns are lower than expected? The model adapts to your life.
What Does a Cashflow Model Include?
To create an accurate and helpful cashflow model, a range of financial information and assumptions need to be included. These are typically broken into a few key areas:
Income
Salary or self-employed earnings
Pension income (now or in the future)
Rental income or other passive income
Dividends or investment income
State Pension entitlement
Expenses
Regular household costs (utilities, groceries, insurance)
Mortgage or rent payments
Lifestyle costs (holidays, entertainment, hobbies)
Planned one-off expenses (e.g. a new car, weddings, home improvements)
Long-term care costs (if applicable)
Assets
Property values (main residence, buy-to-let, etc.)
Savings accounts and cash reserves
Investment portfolios (ISAs, general investments, pensions)
Business assets (if relevant)
Liabilities
Mortgage balances
Loans or credit card debts
Future financial commitments
Assumptions
Inflation rate (cost of living increases)
Investment growth rates
Salary increases or career changes
Life expectancy
Retirement age and income needs post-retirement
The result is a year-by-year forecast of your financial position - often visualised through charts and graphs - that shows whether your plans are sustainable, and for how long.
How a Cashflow Model Supports Your Obsidian Financial Planner
From a Financial Planner’s perspective, a cashflow model is more than just numbers on a page - it’s a tool that transforms financial advice from reactive to proactive.
Here’s how it helps us help you:
1. Creates a Personalised Plan
Every person is different, and so is their financial journey. A cashflow model allows your planner to build a plan that is specifically tailored to your goals, risk tolerance, and lifestyle -rather than offering generic advice.
2. Highlights Gaps or Risks
The model helps identify potential financial shortfalls before they occur - giving you and your Planner time to course-correct, whether by adjusting spending, increasing savings, or reviewing your investment strategy.
3. Supports Better Conversations
A visual model makes complex financial concepts easier to understand. It encourages deeper discussions about your priorities, trade-offs, and values, so your financial plan reflects not just your money, but your life.
4. Enables Scenario Planning
Your planner can use the model to explore “what if” scenarios based on your concerns. What if markets crash? What if you sell a property? What if you live longer than expected? This flexibility helps you feel more in control - even in uncertain times.
5. Provides Ongoing Support
Financial planning isn’t a one-time event. Your cashflow model can be updated regularly as your circumstances change - such as receiving an inheritance, selling a business, or retiring early. This ongoing review helps keep your plan relevant and effective.
In Summary
A cashflow model brings your finances to life. It shows not just where you stand today, but how your decisions today can shape your future. With a clear, visual plan, you gain confidence, clarity, and control - and your Financial Planner is better equipped to guide you every step of the way.
Whether you’re just starting out or nearing retirement, using a cashflow model is one of the smartest ways to make your money work harder for you - both now and in the years ahead.
Investment Philosophy
At Obsidian, our investment philosophy centres on a disciplined, evidence-based approach grounded in rigorous research and long-term value creation. Here are the pillars that define our strategy: