What happens if revenue exceeds expenses?

The tool detects profitability and displays an infinite (∞) runway with a green 'Cash-Flow Positive' indicator, as your business is generating net surplus capital each month.

How often should founders calculate runway?

Founders and finance managers should recalculate runway on the 1st of every month after monthly accounting close, or whenever a major recurring expense or client contract changes.

Finance Calculators

Cash Runway & Burn Rate Calculator

The problem: Startups and solo agencies often misjudge their survival runway by tracking gross spending instead of net burn against incoming retainers.

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100% In-Browser Execution. Zero server uploads. Your data never leaves this tab — disconnect your internet and the tool keeps working.

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100% In-Browser Execution. Zero server uploads. Your data never leaves this tab — disconnect your internet and the tool keeps working.

Moderate Runway (6 - 12 Months)

11.8 Mo

Estimated zero-cash date: Sep 23, 2027 (360 days remaining)

Cash in Bank$65,000

Monthly Expenses$8,500

Monthly Revenue$3,000

Net Monthly Burn

-$5,500 / mo

Expenses minus revenue

Daily Burn Velocity

-$181 / day

Daily cash outflow

Runway Extension Target

+$1,375 / mo

To add 3 months of runway

Cash Runway & Burn Rate Calculator: the complete guide

A Cash Runway and Burn Rate Counter calculates how many months and days a startup, freelance business, or agency can survive before running out of capital at its current net burn rate. Running out of cash is the leading cause of early-stage company failure. By entering your current liquid cash balance, recurring monthly expenses, and incoming revenue, this calculator provides your exact zero-cash drop-dead date, assigns a financial safety tier (Critical, Warning, Moderate, Strong), and computes daily burn velocity.

Gross Burn vs. Net Burn Rate

Gross burn is the total amount of cash leaving your bank account every month (salaries, software, hosting, rent). Net burn is gross burn minus incoming customer revenue. If you spend $10,000/month and make $4,000/month in client retainers, your net burn is $6,000/month. Runway must always be calculated against net burn.

Recommended Safety Cash Buffers

Financial advisors recommend maintaining at least 6 months of net runway for established service agencies, and 12 to 18 months for pre-revenue venture-backed startups. Anything under 3 months is in the Critical zone, requiring immediate expense reductions or emergency financing.

Step by step: how to use Cash Runway

1
Adjust the Cash in Bank slider or enter your total liquid bank balance.
2
Enter your total recurring monthly expenses (salaries, subscriptions, overhead).
3
Enter your recurring monthly client revenue.
4
View your net runway in months and days, and inspect the calculated zero-cash date.
5
Review the daily burn velocity to understand daily cash outflows.
6
Use the Runway Extension Target to see how much revenue growth is needed to extend safety by 3 months.

Security & privacy

Financial balances and burn rate figures are confidential corporate data. This tool runs 100% locally with zero server requests, ensuring your financial metrics remain completely private.