Know exactly how many months you have left. Plan your next move before your bank account decides for you.
Reinvest profits into growth channels with proven ROI
Build a 6 month cash reserve for safety
Consider organic marketing to compound growth without increasing burn
Explore hiring to accelerate, but keep burn disciplined
You are losing this amount every month.
Revenue covers burn by Apr 2027.
You are in an amazing position. Use organic channels like Reddit and content marketing to compound growth without increasing burn. Tools like MediaFast can help you automate organic acquisition at zero cost.
Extend your runway with MediaFastRevenue, growth, and product-market fit all matter. But none of them matter if you run out of cash first. Runway is the foundation everything else depends on.
29% of startups fail because they run out of cash. Not because their product was bad, not because their team was weak. They simply ran out of time. Knowing your runway lets you make smarter decisions about when to hire, when to spend, and when to cut.
Every new hire, every marketing campaign, every tool subscription increases your burn rate. Founders who track runway weekly catch problems months before they become fatal. The ones who do not check are usually the ones who get blindsided.
Investors can smell desperation. Founders with 18+ months of runway negotiate from strength: better valuations, better terms, and the ability to say no to bad deals. Founders with 3 months take whatever they can get.
No matter your stage, reducing CAC extends runway. Founders using organic channels like MediaFast consistently add 3 to 6 months of runway by replacing paid spend with community-driven growth.
Audit every subscription, tool, and service. Cancel anything that is not directly contributing to revenue or retention. Most startups find 15 to 25 percent of their burn is wasted on tools nobody uses or experiments that ended months ago.
Paid ads burn cash. Reddit marketing, content marketing, and community engagement cost nothing but time. For early-stage startups, organic channels often convert better than paid because users trust authentic recommendations over advertisements.
Annual plans, upsells, and referral programs generate revenue from people who already trust you. Offer a 20% discount for annual billing and watch your cash position improve overnight. Retaining one customer is 5x cheaper than acquiring a new one.
MediaFast helps founders acquire customers at $0 CAC through organic Reddit marketing.
Common questions about cash runway, burn rate, and financial planning for founders.
Startup runway is the number of months your company can continue operating before running out of cash. It is calculated by dividing your current cash balance by your monthly net burn rate (expenses minus revenue). Knowing your runway is critical because it determines how much time you have to reach profitability, raise funding, or pivot your business model. Most investors expect startups to maintain at least 12 to 18 months of runway.
Gross burn rate is your total monthly expenses, regardless of revenue. Net burn rate is your gross burn minus your monthly revenue. For example, if you spend $20,000 per month and earn $5,000, your gross burn is $20,000 but your net burn is only $15,000. Net burn gives you a more accurate picture of how fast you are actually consuming cash, which is why this calculator uses net burn for runway projections.
Revenue growth can dramatically extend your runway. If your revenue is growing monthly, each month you burn less cash than the previous month. This calculator simulates month by month, compounding your revenue growth, to show you a realistic runway that accounts for increasing revenue. A startup with 10% monthly revenue growth will have significantly more runway than one with flat revenue, even with the same starting cash and burn rate.
For venture-backed startups, 18 to 24 months is considered healthy and gives you enough time to hit milestones before your next raise. For bootstrapped startups, 12 months or more is a solid target. Anything under 6 months is considered the danger zone because fundraising typically takes 3 to 6 months, leaving almost no margin for error. If you are under 3 months, you are in emergency mode and need to cut costs or find revenue immediately.
Start fundraising when you have at least 6 to 9 months of runway remaining. The average Series A takes 3 to 6 months from first meeting to money in the bank. If you wait until you have only 3 months left, investors will sense desperation and negotiate worse terms. The best time to raise is when you do not need the money yet, which is why tracking your runway weekly is essential.
MediaFast helps startups acquire customers organically through Reddit, so every dollar stays in the bank longer.
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