Operating Reserve & Runway Snapshot
Prepared with ToyBox Consulting & Management
toyboxconsulting.net · katoya@toyboxconsulting.net

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Operating Reserve & Runway Calculator

How many months could you keep the lights on if the money stopped tomorrow? Enter a few numbers to see your current runway, how it compares to a healthy reserve, and the gap to close. Stays in your browser.

Your numbers

Use your most recent figures — estimates are fine.

Annual operating expenses (USD/year)

Unrestricted cash & reserves on hand (available today)

Reserve target (months of expenses — 3–6 is a common healthy range)

6 months

Your runway

Enter your expenses and cash above — your runway, target, and the gap appear here and in the sidebar.

Directional estimate, not financial advice. Runway = unrestricted cash ÷ (annual expenses ÷ 12). A reserve target of 3–6 months is a common benchmark, but the right level depends on your funding mix, restrictions, and cash-flow timing. · Prepared with ToyBox Consulting & Management.