Calculating Cash Burn Rate: A CFO's Guide (2024)

Your startup's cash burn rate is one of the most important metrics to get right. Without it, you could run out of cash.

Understanding the rate your startup is spending or losing money is necessary to ensure you have the right amount of cash reserves and be among the 80% of companies that survive in their early years.

As this is a “life or death” situation for your company, it’s important to understand what cash burn rate is and how to use them to make improved financial decisions.

What Is Cash Burn Rate?

The cash burn rate measures how quickly a company spends its cash reserves over a specific period.

Using the burn rate, you can estimate how much time your business has left to operate before running out of cash, also known as cash runway.

For a startup to survive, it must either become profitable or raise equity financing from external investors before running out of cash.

Because it may take a few years for unprofitable companies to start turning a profit, the burn rate helps you see how much time you have to achieve that goal.

Calculating Cash Burn Rate

Cash burn rate takes total cash balance from the prior month minus the cash balance in the current month to determine your current cash burn rate.

To calculate cash burn rate use this formula: Cash balance from prior month – Venture capital funding

Beware that including VC-funding in your cash burn rate calculation does not always give you a realistic view of how much money is being spent/lost, and may lead to cash burn issues down the line.

For this reason, venture capital-backed startups may wish to exclude recent VC funding from this calculation. To do so, the calculation would be:

Cash balance from prior month – Venture capital funding – Cash balance in current month – Venture capital funding = Cash burn rate, excluding Venture capital funding

Types Of Burn Rates

Gross Burn

Gross burn rate is the total amount of cash you're spending per month.

This measurement leverages your financial reports, such as P&L, balance sheet, and cash flow statement, to determine a realistic calculation of your company’s burn.

Gross burn rate gives you a clear picture of how much cash you’re spending each month. It's also a financial metric that all venture capitalists, investors, and board members will want to have access to.

Gross Burn Rate Calculation: Add Up Total Monthly Operating Expenses

Net Burn

Net burn rate is the total amount of cash you're losing per month.

It factors in your total expenses and total income in a given month. This includes proceeds from revenue and cost of sales. Net burn is the same as net income on your monthly .

This type of cash burn rate provides the most comprehensive view of burn by weighing revenue and income against expenses.

Investors and board members prefer this burn rate because it uses accrual accounting. This makes for a more consistent calculation and contextual alignment with the rest of your financial records.

Net Burn Rate Calculation: Total Monthly Revenues – Total Monthly COGS – Total Monthly Operational Expenses

Relationship Between Burn Rate and Startup Runway

Burn rate and startup runway go hand in hand. You can use the burn rate calculation to quickly determine your company's cash runway (how long your company can operate at its current rate before running out of cash).

How to calculate startup runway using net burn rate

Use your average net burn rate and current cash balance to determine how many months your company can continue operating before running out of cash.

Startup Runway Calculation: ‍Cash Balance In Current Month / Average Net Burn Rate

Using Cash Burn Analysis To Make Financial Decisions

You’ll typically want a negative cash burn rate because it means you’re accumulating cash instead of depleting it. But there are scenarios where investing money aggressively in growth makes sense.

Regardless, keep a close eye on your cash flow statements, plan for your expected burn rate, and monitor your progress.

The following three tips will help you use cash burn rate to make more effective business decisions:

1. Determine If Your Products Or Services Are Profitable

Your cash burn rate can tell you how much revenue your business needs to earn to start producing profit as quickly as possible. Because you typically calculate burn rate monthly, you can also get a granular view of whether your products or services are profitable.

With that knowledge, your management team can make quick, agile decisions that bring your offerings to profitability faster.

Additionally, profitability, or the value of a company, is a critical determiner in getting business loans. Carefully managing your startup cash burn is essential to achieving profitability as quickly as possible — and maintaining it.

2. Adjust Spending

If your cash burn rate analysis reveals a high monthly burn rate, consider looking at actions to reduce your costs and cash burn rate.

Some ideas include:

  • Reevaluating your software tools recurring expenses
  • Reducing personnel expenses
  • Selling assets
  • Increasing sales
  • Investing in product enhancements or research and development

3. Identify New Areas Of Opportunity

You can find areas of opportunity for profitability by using your cash burn analysis. For example, automation and artificial intelligence (AI) are helpful tools for reducing labor costs and increasing efficiency, especially in administrative, HR, and financial areas.

Another revenue-enhancement strategy is exploring new markets or products and services. If your analysis reveals a highly profitable offering you’ve already optimized, it may be time to offer it to new customers or markets.

Or you can take that offering and create tailored versions that increase upsells and customer retention.

Additionally, you can use cash burn analysis to see where most of your costs are. Are they aligned with industry trends and new technological developments?

If not, you may spend too much of your resources on outdated technology and trends that drive inefficient results.

By using your cash burn analysis to identify improvements in cost efficiency, revenue, and competitiveness in the industry, you can reduce your burn rate and gain profitability faster.

What Makes Cash Burn Rate So Important For Startups?

Calculating cash burn rate is crucial for established companies and startups. It assists in forecasting future investments and identifies minimum income or loan amounts required to offset expenses.

Investors refer to this ratio to ensure they understand how much cash they need to provide to help the company meet its costs.

Get Automated Calculations Of Your Startup’s Crucial Financial Metrics

It’s crucial to understand and calculate your company’s cash burn rate since it can determine whether or not you’ll be able to sustain your operations.

The cash burn rate formula calculates how quickly your company spends its cash reserves in a specific period. If your monthly cash burn rate is high, you’ll typically want to reduce your costs and burn rate quickly.

Increasing operational efficiency is one of the most effective ways to lower the burn rate. A lean financial operations team that uses AI to deliver automated, real-time financial statements and calculations can be invaluable in helping you do that.

Calculating Cash Burn Rate: A CFO's Guide (2024)

FAQs

How to calculate cash burn rate? ›

Net burn rate is the difference between your monthly revenue streams and your monthly operating expenses.
  1. Calculating Gross Burn Rate: Add up all monthly expenses such as salaries and rent on a monthly basis.
  2. Calculating Net Burn Rate: Subtract your monthly revenue from gross burn rate.
Aug 2, 2023

Does cash burn include cogs? ›

What Does Gross Cash Burn Include? Gross burn is your total operating expenses, including the cost of goods sold (COGS). It includes salaries, rent, utilities, and supplies.

How do you measure burn rate? ›

There are two different types of burn rates to consider: Gross burn rate and net burn rate. Your gross burn rate is the total cash you spend each month. Your net burn rate, on the other hand, is the difference between the cash you've brought in and the cash you've spent.

How to calculate burn rate grant? ›

The burn rate is the rate at which you are spending your obligation. The basic calculation for your burn rate is to figure how much you have spent and divide that by the number of months you have been spending.

What is the formula for burning rate? ›

The gross burn rate is simply the total amount of money spent each month. The net burn rate is the amount of money lost each month and takes into account any possible company revenue. It is calculated using the following formula: (Monthly Revenue - Cost of Goods Sold) - Gross Burn Rate = Net Burn Rate.

What is the burn rate for dummies? ›

Burn rate: The rate at which cash is burned or consumed by a business that is operating at a loss (or at a very low profit margin possibly).

How to calculate percentage of burn? ›

Several methods are available to estimate the percentage of total body surface area burned. Rule of Nines - The head represents 9%, each arm is 9%, the anterior chest and abdomen are 18%, the posterior chest and back are 18%, each leg is 18%, and the perineum is 1%.

Does cash burn include depreciation? ›

To calculate gross cash burn, we require two inputs. We need our total P&L (income statement) operating expenses (excluding depreciation and amortization) and our current cash balance.

Does cash burn include interest expense? ›

There are two types of burn rate: gross and net. The former is simply a measure of how much revenue a company is bringing in; the latter is its revenue minus expenditures (salaries, utilities, taxes, interest payments, etc.).

What are the three ways of calculating burns? ›

Three predominantly used and established methods of burn size estimation are:
  1. "Rule of Palm" ...
  2. "Rule of Nines" ...
  3. "Lund-Browder Chart"

What is the most accurate method to calculate burn? ›

The Lund and Browder (LB) chart is currently the most accurate and widely used chart to calculate total body surface area affected by a burn injury.

What is the meaning of cash burn? ›

FINANCE. the speed at which a company spends the money that is available to it, when it is not making more money than it spends: We are not concerned about our cash burn rate, we have £117m in the bank which is more than enough to take us through to profitability.

How to calculate burn rate of cash? ›

Cash burn rate takes total cash balance from the prior month minus the cash balance in the current month to determine your current cash burn rate.

How do you calculate cash burn in Excel? ›

In Excel, subtract the ending cash balance of the month from the starting balance. Divide this number by the number of months to get the average monthly burn rate.

What is a good burn rate percentage? ›

Following this rule, a 20% growth rate and positive 20% net burn rate would be acceptable, as would a 40% growth rate and 0% net burn or 100% growth rate and negative 60% burn rate. In other words, it is acceptable to go over your burn rate as long as it is justified by strong growth.

How is burn percentage calculated? ›

Several methods are available to estimate the percentage of total body surface area burned. Rule of Nines - The head represents 9%, each arm is 9%, the anterior chest and abdomen are 18%, the posterior chest and back are 18%, each leg is 18%, and the perineum is 1%.

How do you calculate burn cost? ›

What Is the Burning-Cost Ratio? In the insurance sector, the term “burning-cost ratio” refers to a metric that can be calculated by dividing excess losses by the total subject premium.

What is the cash runway burn rate? ›

Runway refers to how long a company can operate before they run out of cash, also typically measured in months. To calculate your runway, you take your total amount of available cash and divide your burn rate. For instance, if you have $200,000 available and your net burn rate is $20,000, your runway is 10 months.

What is the formula for project burn rate? ›

Calculating project burn rate (PBR) is a fundamental practice in project management to maintain budgetary control. The recommended formula for calculating PBR is the "Total Spent / Total Budget" method. This formula offers a clear and comprehensive view of how quickly a project is utilizing its allocated funds.

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