# Runway Model Example Build a runway model for startup cash planning with monthly burn, hiring assumptions, funding timing, and break-even visibility. - Canonical: https://finamodel.com/examples/runway-model - Excel download: https://finamodel.com/templates/runway.xlsx - Category: Corporate Finance - Model type: Operating model - Difficulty: Beginner - Audiences: Founders & operators, CFOs & FP&A, Founders, CFOs, Seed investors, Early-stage operators - Tags: burn-rate, cash-flow, fundraising, headcount ## Overview Track monthly cash burn and forecast runway for seed and early-stage companies without complex financial statements. The model projects revenue by product line and customer cohort; breaks down headcount planning by function with salary and equity compensation; details operating expenses (G&A, marketing, infrastructure); and calculates monthly cumulative runway in days of cash remaining. Output: when to raise next round, sensitivity to growth rate vs expense timing, and funding event impact (dilution, new cash on balance sheet). Revenue forecasting allows for multiple customer cohorts with different churn and expansion rates. Headcount builds apply role-level salaries, benefits, and payroll tax. Operating expenses are granular (travel, tools, legal) rather than lumped percentages. Monthly visibility reveals lumpy items (marketing campaigns, conferences) that quarterly models miss. Scenario variants show best-case, base-case, and worst-case runway - critical for board presentations and investor updates. Built for founders, CFOs, and seed-stage investors who need transparency on cash position and hiring trade-offs. Works with SAFe, burn-rate metrics, and venture planning workflows. No complex debt, no complex tax; focus is on operational cash flow. ## What's included - Monthly cash runway forecast - Revenue growth and churn assumptions - Headcount and operating expense planning - Funding round timing and cash impact - Burn rate and break-even analysis - Revenue forecasting by product line and customer cohort - Headcount planning with salary and comp assumptions - Operating expense detail by function (G&A, marketing, infrastructure) - Monthly cash flow projection and cumulative runway - Sensitivity to growth rate and expense timing - Funding event modeling with dilution impact ## Runway Model: A 24-Month Cash Planning Template for SaaS Startups This runway model helps SaaS founders and finance teams answer a critical question: when will cash run out? It projects monthly cash balances over 24 months using operating assumptions for customer tiers, hiring, funding rounds, and working capital. The model surfaces a Cash Zero Date and other key metrics to support board discussions and funding decisions. It is designed for institutional seed to Series A SaaS companies seeking clarity on cash runway. ### Key Operating Drivers The model's forecast is driven by a focused set of operating inputs. Revenue is built from three customer tiers with distinct starting logos, annual contract values, monthly new-logo additions, and churn rates. - Net revenue retention (NRR) and gross retention (GRR) shape expansion and churn dynamics. Hiring assumptions cover five departments, with monthly hire rates, start delays, salaries, benefits load, and productivity ramp factors. - Working capital inputs include days sales outstanding, days payable outstanding, and annual prepay percentages that influence cash timing. A scenario toggle lets you switch between Base, Bull, and Bear cases, adjusting 12 sensitive drivers like new logos, churn, hires, and sales commission. The structure keeps assumptions centralized and traceable. ### How Calculations Flow The model follows a logical flow from assumptions to outputs. Inputs on the Assumptions sheet feed into Hiring_Plan and Customer_Rollforward, which compute headcount and customer counts by tier. - Monthly_Forecast then consolidates revenue, cost of goods sold, operating expenses by department, EBITDA, and cash flow. Cash flow incorporates net income, stock-based compensation addback, working capital changes, and funding inflows from Seed, SAFE, and Series A rounds. - Funding rounds are modeled discretely with pre-money valuations and dilution effects on founder ownership. The cash balance is calculated monthly, and a sticky flag marks the first month cash turns negative. This integrated approach ensures that changes in operating drivers propagate consistently through the P&L and cash flow. ### Primary Outputs and Metrics The model produces several key outputs for decision-making. The Cash Zero Date and Months Until Cash Zero are prominently displayed on the Cover and Runway_Analysis sheets, indicating when cash is projected to run out. - The M24 Runway shows the number of months of cash remaining at the end of the 24-month horizon, or labels the company as profitable if net burn turns negative. Other metrics include Burn Multiple, Magic Number, CAC Payback, and LTV/CAC ratio, with benchmark labels based on SaaS industry rubrics. - The Cover sheet also presents high-level KPIs like ARR, EBITDA margin, headcount, and total capital raised. These outputs give a comprehensive picture of financial health and efficiency. ### Practical Use and Limitations This runway model is intended for internal planning and board communication. It allows users to test how different funding timings or hiring plans affect cash runway, and to compare scenarios by toggling between Base, Bull, and Bear cases. - The model includes validation checks to ensure data integrity, such as OPEX and ARR reconciliation, cash positivity, and cap table accuracy. However, it has limitations: cohort retention uses a blended churn rate rather than tier-specific curves, CAC payback uses a simplified methodology, and tax is treated as a memo line without net operating loss carryforwards. - The model also does not link sales productivity ramp directly to revenue. These simplifications make it suitable for early-stage runway analysis but not for full financial statement modeling. The public download provides a values-only preview; the live formulas remain in the original template. ## Built for near-term startup decisions Use this model when you need to know how long cash lasts, what drives burn, and when runway risk starts to appear. ## Useful for fundraising timing A runway model helps show whether the business can reach the next milestone before it needs more capital. ## Better for monthly cash planning This is more tactical than a broad annual plan, which makes it useful when cash timing matters week by week or month by month. ## Built for near-term startup decisions Use this model when you need to know how long cash lasts, what drives burn, and when runway risk starts to appear. ## Useful for fundraising timing A runway model helps show whether the business can reach the next milestone before it needs more capital. ## Better for monthly cash planning This is more tactical than a broad annual plan, which makes it useful when cash timing matters week by week or month by month. ## Workbook structure ### Cash Position This sheet establishes the current cash base and opening runway position before any new assumptions are layered in. - Opening cash balance - Current burn baseline - Existing liquidity starting point - Immediate runway context before forecast changes ### Operating Assumptions The assumptions sheet captures hiring, growth, revenue timing, and cost inputs that drive monthly runway movement. - Hiring and payroll assumptions - Revenue timing and growth expectations - Fixed and variable operating costs - Any financing or bridge funding assumptions ### Monthly Runway This sheet tracks month-by-month burn and cash movement so you can see when runway starts to tighten. - Monthly inflows and outflows - Net burn calculation by period - Closing cash by month - Runway visibility under the current plan ### Scenario Cases The scenario sheet compares upside, base, and downside cases so you can see how sensitive runway is to key assumptions. - Best, base, and downside views - Hiring or spend reduction scenarios - Revenue timing sensitivity - Funding timing impact on survival ### Cash Position This sheet establishes the current cash base and opening runway position before any new assumptions are layered in. - Opening cash balance - Current burn baseline - Existing liquidity starting point - Immediate runway context before forecast changes ### Operating Assumptions The assumptions sheet captures hiring, growth, revenue timing, and cost inputs that drive monthly runway movement. - Hiring and payroll assumptions - Revenue timing and growth expectations - Fixed and variable operating costs - Any financing or bridge funding assumptions ### Monthly Runway This sheet tracks month-by-month burn and cash movement so you can see when runway starts to tighten. - Monthly inflows and outflows - Net burn calculation by period - Closing cash by month - Runway visibility under the current plan ### Scenario Cases The scenario sheet compares upside, base, and downside cases so you can see how sensitive runway is to key assumptions. - Best, base, and downside views - Hiring or spend reduction scenarios - Revenue timing sensitivity - Funding timing impact on survival ## Features - **Month-by-month visibility:** See exactly when cash runs out and plan fundraising or profitability milestones with precision. - **Hiring and burn trade-off:** Model how hiring timelines, salary bands, and equity grants affect monthly burn and total runway. - **Scenario planning:** Run conservative, base, and bull cases to stress-test your cash position under different growth and cost outcomes. ## Use cases - **Board and investor updates:** Show monthly financial progress, cash position, and milestones to keep stakeholders aligned on burn and runway. - **Fundraising timing:** Know exactly how many months of runway remain and plan your seed or Series A raise to close 3-6 months before cash depletion. - **Hiring and expense control:** Model the impact of headcount additions on monthly burn and validate cost structure against unit economics and growth. ## Frequently asked questions ### What is a runway model? A runway model estimates how many months a company can operate before it runs out of cash, based on burn and funding assumptions. ### Who uses runway models? They are commonly used by startup founders, finance leads, advisers, and investors. ### What should a runway model include? It should include cash burn, revenue assumptions, hiring plans, operating expenses, and any expected funding events. ### Why is a runway model different from a full financial model? A runway model is usually more tactical and focused on cash survival, burn, and near-term planning rather than full long-range reporting. ### Can this help with fundraising timing? Yes. It helps show when cash may run low and how fundraising timing affects survival and milestones. ## Related templates - [3 Statement Model](https://finamodel.com/templates/3-statement-model) - [Pre-Seed Startup Financial Projection Model](https://finamodel.com/templates/pre-seed-pitch-model) - [Bridge Round Financing Model](https://finamodel.com/templates/bridge-round-financing-model)