Know Exactly When Your Cash Runs Out
Calculate your startup's cash runway with precision. This calculator shows exactly when your company will run out of money based on your current cash balance, monthly burn rate, and any recurring revenue. Whether you're planning your next fundraise or managing towards profitability, knowing your runway is essential for survival.
Months of Runway
9.0 months
Net Burn Rate
$50.0K
Cash Balance
$450.0K
With $450,000 in cash and a net burn of $50,000/month ($75,000 expenses - $25,000 revenue), you have 9.0 months of runway. Consider beginning fundraising discussions soon.
Your cash runway is the most critical metric for startup survival. It tells you exactly how long you have to either reach profitability or raise your next round of funding. Understanding your net burn rate - expenses minus revenue - gives you the true picture of how fast your cash is depleting.
If you are cash flow positive (revenue exceeds expenses), congratulations - you are no longer dependent on external funding for survival. If not, aim for at least 12-18 months of runway to give yourself time to execute and raise capital without desperation.
Months of Runway
9.0 months
Net Burn Rate
$50.0K
Cash Balance
$450.0K
With $450,000 in cash and a net burn of $50,000/month ($75,000 expenses - $25,000 revenue), you have 9.0 months of runway. Consider beginning fundraising discussions soon.
Your cash runway is the most critical metric for startup survival. It tells you exactly how long you have to either reach profitability or raise your next round of funding. Understanding your net burn rate - expenses minus revenue - gives you the true picture of how fast your cash is depleting.
If you are cash flow positive (revenue exceeds expenses), congratulations - you are no longer dependent on external funding for survival. If not, aim for at least 12-18 months of runway to give yourself time to execute and raise capital without desperation.
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Runway health assessment provides critical early warning of financial sustainability issues enabling proactive responses before crisis conditions force reactive decisions. Adequate runway defined as current months of survival minus fundraising timeline exceeding six months creates buffer accommodating process delays, deal failures, and unexpected expenses. Companies approaching fundraising with less than six-month post-process buffer face meaningful pressure as shortened timelines reduce negotiating leverage, limit investor selection, and increase vulnerability to unfavorable terms. Healthy runway status enables confident execution focus without constant financial stress allowing management attention on product development, customer acquisition, and team building rather than emergency capital raising. Unhealthy runway creates urgency requiring immediate action through multiple levers including expense reduction to lower burn, revenue acceleration to improve cash flow, bridge financing from existing investors to extend timeline, or accelerated fundraising beginning earlier than planned to secure capital before depletion. Early detection through systematic runway monitoring prevents desperate late-stage scrambling as identifying six-month deficit provides adequate response time while discovering three-month shortfall creates crisis management requirements. Industry standard six-month post-fundraise buffer reflects typical variance between plans and reality with deals falling through, processes extending, or market conditions changing requiring flexibility to absorb challenges.
Fundraising timing optimization depends critically on runway health as initiating capital raising with adequate buffer enables selective investor approach, patient negotiation, and ability to walk away from unfavorable terms. Organizations beginning fundraising at nine to twelve months runway provide three to six months process time plus six months post-close buffer creating standard healthy position. Companies forced to fundraise with six months or less runway telegraph desperation to sophisticated investors who recognize compressed timeline and may demand better terms, higher dilution, or onerous provisions exploiting weak negotiating position. Runway deficit scenarios where current months of survival minus fundraising timeline yields negative or minimal buffer require immediate corrective action as waiting exhausts options and increases severity. Bridge financing from existing investors provides temporary runway extension enabling completion of proper fundraising process though typically carries unfavorable terms including higher valuations, warrants, or conversion discounts reflecting emergency nature. Accelerated fundraising timelines compressing process from six months to three months through warm investor relationships, simplified due diligence, or reduced investor selection may succeed though sacrifices thoroughness and potentially leaves value on table. Expense reduction extending runway through cost cuts, hiring freezes, or operational optimization provides immediate relief though may slow growth momentum or damage team morale requiring careful calibration.
Strategic decision-making across hiring, marketing, product development, and growth investments requires runway health context as adequate buffer enables aggressive strategies while deficit conditions necessitate conservation. Healthy runway companies can invest confidently in team expansion, marketing campaigns, product features, and market entry knowing adequate time horizon for initiatives to mature and deliver returns. Unhealthy runway situations force difficult tradeoffs between growth velocity and financial sustainability with immediate pressure favoring expense discipline over strategic investments. Monthly cash monitoring tracking burn rate, balance trends, and forward projections maintains runway health visibility enabling early detection of deterioration. Scenario planning modeling conservative, baseline, and optimistic revenue and expense trajectories reveals runway sensitivity to assumptions informing risk management strategies. Board communication about runway health creates shared understanding of financial position and timeline pressure enabling aligned decision-making on strategic priorities. Investor transparency demonstrating systematic runway tracking, proactive management, and clear action plans when health deteriorates builds confidence in financial stewardship capability.
Profitable startup with $450k cash, $50k monthly expenses, and $60k monthly revenue.
Great news! With revenue exceeding expenses by $10,000/month, this startup is cash flow positive and will never run out of cash. The balance will grow over time, providing financial independence from external fundraising.
Well-funded startup with $600k cash, $75k expenses, and $25k revenue.
With a net burn of $50,000/month ($75k expenses - $25k revenue), this startup has 12 months of runway. This is a healthy position that provides time to execute and raise capital without desperation.
Cash-strapped startup with $200k cash, $75k expenses, and $25k revenue.
With only 4 months of runway remaining, this is a critical situation. Immediate action is needed - either cut expenses significantly, accelerate revenue, or begin emergency fundraising immediately.
Early-stage startup with $300k cash, $30k monthly expenses, and no revenue yet.
With 10 months of runway and no revenue, this startup should begin fundraising discussions soon while there is still time. Focus on reaching product-market fit milestones before cash runs low.
Healthy runway status requires current months of survival minus fundraising timeline to exceed six months creating adequate buffer for process variation and unexpected challenges. Six-month standard reflects empirical experience that fundraising processes frequently encounter delays from investor decision timing, due diligence extension, market condition changes, or deal structure negotiation stretching nominal three-month timelines to four or five months. Additional buffer beyond process time accounts for failed first attempts requiring restart with different investors, seasonal slowdowns during summer or year-end holidays, unexpected expenses exceeding budget, or revenue shortfalls reducing net burn projections. Adequate post-fundraise buffer enables patient capital raising without desperation as companies can be selective about investors, walk away from unfavorable terms, and maintain focus on operational execution rather than constant financial stress. Insufficient buffer below six months creates meaningful pressure as shortened timelines telegraph urgency to sophisticated investors who may exploit weak negotiating position through better terms, higher dilution, or onerous provisions. Historical analysis of failed startups shows many run out of cash during fundraising attempts or accept unfavorable emergency bridge financing from insufficient runway planning. Conservative founders maintain nine to twelve month buffers post-fundraise providing substantial margin though accepting higher dilution from larger raises while aggressive operators comfortable with six months minimize dilution at cost of reduced flexibility.
Unhealthy runway requiring immediate response through multiple levers deployed in combination to restore adequate buffer before crisis conditions eliminate options. Expense reduction analysis examining all spending categories identifying non-essential costs for elimination, vendor renegotiation opportunities, hiring freezes, marketing optimization, and operational efficiency improvements targeting 15-30% burn reduction. Revenue acceleration initiatives through pricing increases, sales process optimization, expansion revenue from existing customers, or new channel development improving net burn trajectory though requiring realistic assessment of feasibility timeline. Accelerated fundraising initiation beginning capital raising immediately rather than waiting for planned milestone achievement accepting weaker positioning for earlier capital securing. Bridge financing discussions with existing investors requesting interim capital to extend runway enabling proper subsequent fundraising process though typically carrying unfavorable terms including premium valuations, warrants, or conversion discounts. Convertible note alternatives providing quick capital with delayed valuation determination useful for extending runway though creating cap table complexity. Venture debt exploration with specialty lenders offering non-dilutive capital though requiring revenue thresholds, personal guarantees, or restrictive covenants. Strategic partnership opportunities with potential acquirers or industry players providing capital plus strategic value though potentially constraining future options. Founder salary deferrals or reductions providing immediate burn relief though limited magnitude and potential personal hardship concerns. Comprehensive action plans combining multiple levers with specific targets, timelines, and accountability creating credible path to runway health restoration. Board engagement providing transparency about situation, proposed solutions, and progress enabling director support and potential assistance with financing or customer introductions.
Fundraising timeline assumptions critically affect runway health calculations as process duration directly determines required buffer before initiating capital raising. Standard three to six month timelines from initial outreach through closing reflect stages including relationship building with target investors, formal presentation meetings, due diligence processes, term sheet negotiation, legal documentation, and fund wire transfer occurring sequentially. Accelerated timelines of two to three months possible with warm relationships from existing investor networks, streamlined due diligence from strong preparation, or competitive situations with multiple interested parties though sacrificing thoroughness and investor selection. Extended timelines of six to nine months occurring during difficult market conditions, complex deal structures, first-time institutional fundraising requiring extensive education, or industries with lengthy evaluation processes. Failed first attempts requiring restart with different investors adding three to six months to total timeline as initial process consumes time before realization that deal will not close necessitates starting over. Seasonal timing with summer months and year-end holidays slowing investor decisions and availability potentially adding one to two months to nominal timelines. Market condition volatility creating unpredictable delays as favorable windows close or investor appetite shifts mid-process extending previously reliable timelines. Parallel versus sequential processes with simultaneous conversations with multiple investors reducing total timeline though requiring more management bandwidth and coordination complexity. Conservative planning using six-month assumption provides buffer against typical delays while optimistic three-month planning creates vulnerability to timeline extension. Runway health monitoring adjusting timeline assumptions as process progresses and actual pace becomes clear enabling course corrections if delays materialize.
Systematic runway health monitoring requires dedicated tools, regular review cadences, and organizational discipline preventing crisis situations through early warning. Monthly financial review process examining cash balance, burn rate actuals versus budget, revenue performance, and forward runway projections maintaining current visibility. Runway dashboard displaying months of current runway, post-fundraise buffer calculation, health status indicator, and trend trajectory enabling quick executive team and board assessment. Automated alerts triggering notifications when runway drops below thresholds such as twelve months total or six months post-fundraise buffer ensuring proactive awareness. Scenario modeling maintaining conservative, baseline, and optimistic projections showing runway ranges under different assumptions about revenue and expenses. Weekly cash monitoring for companies approaching critical thresholds tracking daily balances, upcoming large payments, and expected receipts providing granular visibility. Board reporting including dedicated runway health section with current status, trend analysis, forward projections, and action plans when health deteriorates. Fundraising planning calendar marking key milestones including investor outreach initiation, formal process start, due diligence commencement, and target close aligning with runway requirements. Contingency planning maintaining response playbooks for various runway scenarios including expense reduction targets by category, bridge financing sources with terms, and accelerated fundraising approaches. Team communication about financial position creating shared understanding of runway status and implications for strategic decisions without creating panic. Accountability assignment with CFO or finance leader owning runway monitoring and executive team collectively responsible for health maintenance through spending decisions.
Revenue dynamics fundamentally alter runway health calculation as net burn trajectory from improving income extends effective runway beyond simple cash divided by current burn mathematics. Growing revenue reducing net burn over time means later months consume less cash than earlier periods extending runway beyond linear projection from current burn rate. Break-even trajectory with clear path to cash flow positive status within fundraising timeline potentially eliminating need for next raise or dramatically reducing amount required. Conservative revenue forecasting for runway health planning using pessimistic assumptions prevents overconfidence in income projections that may not materialize creating false security about timeline adequacy. Revenue timing risk from longer sales cycles, implementation delays, or payment terms creating lag between bookings and cash collection requiring cash basis rather than accrual basis runway calculations. Scenario sensitivity testing runway health under optimistic, baseline, and pessimistic revenue cases showing buffer ranges and identifying vulnerability to income shortfalls. Profitability milestone impact as companies approaching break-even can justify shorter buffers knowing eventual independence from fundraising reduces long-term dependency concerns. Investor confidence effects as improving unit economics and declining net burn demonstrate business model validation potentially accelerating fundraising processes and improving terms. Revenue quality considerations with recurring predictable subscription revenue providing more reliable net burn reduction than variable transactional income requiring larger buffers. Churn and retention assumptions materially affecting net burn trajectories with high retention enabling aggressive revenue projections while retention concerns justifying conservative modeling.
Market conditions dramatically affect both fundraising difficulty and appropriate runway buffer requirements as capital availability and investor sentiment vary substantially across cycles. Favorable fundraising environments with abundant capital, high valuations, and quick processes enable shorter buffers as companies can raise efficiently when needed though creating temptation to delay unnecessarily. Difficult markets with constrained capital, valuation compression, and extended timelines require larger buffers providing survival through challenging periods until conditions improve or company achieves milestones justifying premium terms. Market timing unpredictability means companies cannot reliably predict conditions six to twelve months forward when fundraising occurs requiring conservative buffers accommodating adverse scenarios. Procyclical risk as favorable conditions when planning often deteriorate by fundraising time creating systematic underestimation of difficulty and buffer requirements. Countercyclical opportunity as difficult conditions sometimes improve by raise time rewarding companies with adequate runway to wait for better markets. Sector-specific dynamics with some categories experiencing sustained investor interest while others face extended downturns requiring assessment of relevant market not just overall conditions. Valuation cycle effects with peak market raises at high valuations followed by corrections potentially creating down round pressure for companies with insufficient runway to wait out volatility. Strategic timing considerations with some companies accelerating raises during favorable windows despite adequate runway while others extending through expense discipline during difficult periods. Market intelligence gathering through investor conversations, peer company fundraising experiences, and venture capital firm activity levels providing current condition assessment. Flexible planning maintaining capability to adjust timelines based on market conditions rather than rigid schedules enabling opportunistic fundraising or patient waiting as appropriate.
Runway health status fundamentally shapes strategic decision-making across hiring, marketing, product development, and growth initiatives as buffer adequacy determines risk tolerance and investment horizon. Healthy runway companies with substantial post-fundraise buffers can pursue aggressive strategies including rapid hiring, experimental marketing channels, ambitious product roadmaps, and geographic expansion knowing adequate time for initiatives to mature and deliver returns. Unhealthy runway situations force conservative approaches prioritizing burn reduction over growth velocity through hiring freezes, proven channel focus, feature discipline, and single market concentration. Investment payback considerations with long-payback initiatives like brand building, international expansion, or platform development appropriate only for companies with multi-year runways while short-runway companies require immediate return focus. Hiring decisions balancing team capability needs against cash consumption with healthy companies able to hire proactively for anticipated needs while unhealthy companies filling only critical gaps reactively. Marketing budget allocation between proven high-ROI channels appropriate for all scenarios versus experimental low-ROI channels justified only with adequate buffers. Product development prioritization focusing core value proposition and customer retention for constrained scenarios while pursuing broader platform vision and new markets with healthy buffers. Risk tolerance calibration with adequate runway enabling calculated risks and learning investments while insufficient runway demanding near-certain returns and minimal experimentation. Growth velocity versus sustainability tradeoffs explicitly discussed with team and board connecting spending levels to runway health and strategic priorities. Milestone sequencing aligning major initiatives with runway availability ensuring adequate time for completion before cash constraints force abandonment of partially completed projects. Contingency planning for initiatives maintaining ability to scale back or terminate cleanly if runway health deteriorates avoiding sunk cost fallacies.
Common runway health mistakes create false security, delayed crisis recognition, or unnecessary panic requiring awareness and disciplined assessment methodology. Optimistic burn assumptions underestimating future spending through ignoring planned hires, marketing campaigns, or infrastructure investments creating false confidence in runway adequacy. Revenue overconfidence counting on aggressive sales projections to reduce net burn without conservative scenarios testing impact of shortfalls. Single-point forecasting using only baseline case without sensitivity analysis across pessimistic scenarios exposing vulnerability when reality diverges from expectations. Fundraising timeline underestimation assuming three-month processes when six months more realistic for company stage, market conditions, or institutional investor requirements. Buffer inadequacy planning minimum six-month post-raise runway without margin for delays, deal failures, or unexpected expenses creating vulnerability to minor variations. Delayed recognition waiting until crisis obvious before taking corrective action missing opportunity for measured response when early warning signals emerge. Overreaction to temporary fluctuations making major strategic changes based on single-month variations before confirming systematic problems through multi-period trends. Board surprise presenting runway challenges without warning after previously indicating adequate health damaging credibility and director confidence. Team panic creating organizational anxiety through poor communication about financial position without appropriate context and action plans. Expense reduction randomness making across-the-board cuts rather than strategic prioritization potentially damaging critical capabilities while preserving less essential functions. Bridge financing avoidance refusing to consider interim capital from pride or control concerns allowing runway to deplete to crisis levels before accepting necessity. Market timing mistakes rigidly adhering to planned fundraising schedule despite market deterioration rather than flexibly adjusting based on conditions.
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