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Top 6 Financial Model Best Practices

By Mathew Gollow on May 13, 2021
Last updated on April 24, 2026

A financial model is an essential aspect of everyday business. However, building a financial model can be complicated. Setting up your formulas and condition stipulations takes time. Worried?

Don’t be! We’ve already created the SaaS financial model you’ll actually use. And below, you’ll find our top financial model best practices. Let’s dive right in.

What Is a Financial Model?

A financial model is an accounting tool that helps businesses forecast their financial future. It represents a business’s past, present, and future finances.

Financial models are normally built into spreadsheet software, such as Excel or Google Sheets. These models typically include everything from cash flow statements and income statements to financial assumptions.

Types of Financial Models

Various types of financial models exist. For example, the discount cash flow (DCF) model uses discounted cash flow forecasting to determine a company’s present value. Another example is the three-statement model, which aims to forecast a company’s income statement, balance sheet, and cash flow statement.

Other common types of financial models include:

  • IPO model
  • Consolidation model
  • Budget model
  • Leveraged buyout model

Why Is Financial Modeling Important for SaaS Companies?

There are many reasons why financial modeling is critical for SaaS companies, especially startups. Financial modeling enables companies to predict future revenue and expenses to make sound business decisions. For startups, this means understanding exactly how much revenue to strive for to survive.

Financial modeling can also be used to create accurate budgets, understand funding strategies, and see current progress toward company goals.

Related Read: Financial Model Template: The Benefits of Using One

6 Best Practices for Financial Models

When building your financial models, it’s best to follow these six best practices.

1. Plan ahead.

Before you begin work on a financial model, ask yourself these questions:

  • What financial issue do you need the model to solve?
  • Who will be using the model?
  • How will the model be used?
  • What are your input, output, and process figures?
  • How will you keep all the inputs organized as you build the model?

A successful financial model needs a vision and a goal throughout the model’s building process. This also helps when conducting a sensitivity analysis or budgeting for the future.

2. Structure your model’s metrics logically.

When you build your model, it must contain these three basic elements:

  • Assumptions or inputs. These figures are your bare-bones building blocks. For instance, how much revenue do you expect for the period?
  • Calculations.
  • Outputs. What are the resulting figures? If you have X, Y, and Z, what’s your projected business footing?

Our SaaS financial model accounts for your metrics in an easy-to-use format.

3. Keep the metrics of your model simple.

Anyone who uses financial models will tell you that they decide if a model “works” for them within 30 seconds or less. The simpler the financial model, the more positive feedback it’ll receive. Are you using value metrics?

Consider the following dos and don’ts to keep your cash flow statement and financial model simple.

Do:

  • Limit assumptions to no more than 15.
  • Keep formula lengths about half the size of the formula bar or less.
  • Limit the overuse of cell names.

Don’t:

  • Use different formulas across rows.
  • Use several different formatting conventions.
  • Forget to add your executive summary.

If you’re using Excel, you’ll find several features that help simplify financial models. When you can’t create a simple formula, consider breaking it down over several cells. Some other ways of reducing Excel’s complexity include:

  • The use of flags
  • Not nesting IF statements
  • Simplifying your IF statements with different functions
  • Using logic, such as MIN, AND, or MAX
  • Using functions as intended for simplification, such as VLOOKUP or INDEX

Looking for an easier way to track cash and build financial models? Consider a free trial of Baremetrics.

4. Don’t use values rather than formulas.

Not everyone understands hard values. While it might save time initially, it ultimately paints you as undisciplined and threatens the very reliability and transparency of your financial model.

It’ll appear as though you’ve neglected some financial analysis. Some of the issues most inherent in using values rather than formulas in your forecasting model include:

  • Assumptions aren’t obvious, and this can confuse those working with the model.
  • Your reasoning isn’t as clear.
  • A lack of trust if people don’t understand where your data comes from.

5. Cash flow forecasting estimates and balance sheets must be integrated.

Your balance sheet, cash flow calculations, and other financial statements, like your income statement, are crucial aspects of your model. It might be tempting for time’s sake, but you should never omit these documents.

Proper financial planning means these must be part of your overall business model so you can ensure you’re accurately representing such things as capital expenditures, value-based pricing, tier pricing, stock turnover, private equity, debt dates, and creditor dates.

To instill confidence in your model, end users must have proof of the outcome of it.

6. Double-check your model for potential errors.

To make sure you’ve done your due diligence and everything lines up, check your financial model’s accuracy. Perform a “sanity” check: if it doesn’t make sense on paper, it likely won’t make sense in practice.

Want to see some financial model examples? Check out 5 Financial Forecasting Models and Examples of Use Cases.

Why Use Baremetrics for Financial Modeling?

Successful ongoing financial modeling isn’t possible without clear metrics. Baremetrics is a financial analytics platform built specifically for SaaS subscription companies.

Baremetrics provides accurate metrics about everything from monthly recurring revenue (MRR) to your churn rate. Plus, all of your data can be visualized using the easy-to-read smart dashboard. As a result, you can easily create better financial models using current data and projections.

How Baremetrics Can Help

You’ve got the SaaS financial model you’ll actually use—now you need the data. That’s where Baremetrics comes into play. If you’re curious about how Baremetrics can help your subscription SaaS business, take a test drive today.

Frequently Asked Questions

  • What are the most important financial metrics every SaaS founder should track?
    The most important financial metrics for SaaS founders are MRR, churn rate, LTV, CAC payback period, and gross margin.

    These key financial KPIs give you a complete picture of subscription business health. MRR and ARR show revenue momentum, while churn rate reveals how well you retain customers. LTV compared to CAC tells you whether your acquisition spend is sustainable, and gross margin signals unit economics before you scale. Tracking these in real time rather than from monthly spreadsheet exports is critical for fast decision-making. Baremetrics surfaces all of these metrics automatically from your Stripe, Braintree, or Recurly data, so finance leads and founders always have current figures without manual reconciliation.
  • What platforms offer automated failed payment recovery for subscription businesses?
    Baremetrics Recover is a purpose-built tool that automatically retries failed payments to reduce involuntary churn for subscription businesses.

    Involuntary churn caused by failed payments is one of the most common and preventable revenue leaks in a SaaS business. Recover handles automatic card retries, sends customisable dunning emails, and tracks recovery rate so you can see exactly how much revenue would have been lost. Because it sits on top of your existing payment processor, there is no migration required. For subscription companies focused on improving net revenue retention, automating failed payment recovery is one of the highest-ROI actions you can take before touching pricing or acquisition.
  • How do I separate new MRR, expansion MRR, contraction MRR, and churned MRR in a financial model?
    MRR should be broken into four components: new MRR from new customers, expansion MRR from upgrades, contraction MRR from downgrades, and churned MRR from cancellations.

    Treating all MRR as a single number hides the real story of your subscription business. A flat MRR line could mean zero growth, or it could mean strong expansion revenue masking high churn. Splitting these components in your financial model lets you pinpoint exactly where revenue is won and lost. Baremetrics calculates all four MRR movements automatically and displays them in real-time dashboards, so your financial forecasting is built on clean, segmented data rather than aggregated totals that obscure the detail your finance team actually needs.
  • How can I benchmark my SaaS churn rate against similar companies to validate my financial model assumptions?
    You can benchmark your churn rate against similar SaaS companies using Baremetrics Open Benchmarks, which aggregates data across hundreds of subscription businesses.

    One of the most common mistakes in SaaS financial modeling is using churn assumptions pulled from generic industry reports that do not reflect your business size or pricing tier. Baremetrics publishes real benchmark data so you can compare your monthly churn rate, LTV, and ARPU against businesses at a similar MRR range. Using accurate benchmark inputs makes your financial model far more credible, whether you are stress-testing assumptions for internal planning or presenting projections to investors. Grounding your model in real subscription data is far more reliable than estimating from first principles.
  • What is the simplest way to share subscription financial KPI dashboards with investors or board members?
    The simplest way to share subscription KPIs with investors is through a live, shareable dashboard that pulls directly from your payment processor in real time.

    Manually exporting MRR, churn, and LTV data into a slide deck or spreadsheet before every board meeting introduces lag and the risk of errors. Baremetrics lets you share read-only dashboard links with investors or board members so they can view current metrics at any time without needing a login or a separate report. This is especially useful for growth teams that need to keep stakeholders aligned on revenue forecasting and unit economics between formal reporting cycles. A single source of truth removes the back-and-forth over which numbers are correct.

Mathew Gollow

Mathew spends his days bringing the brilliant ideas of the Baremetrics team to the blog. When Mathew’s not chasing after his team for more accurate and clear information, you can find him teaching voice at the local music academy.