The 13-week cash flow is the tool finance teams use to never get surprised. Enter your cash and weekly flows to see your runway now, then map all 13 weeks with the full forecast.
Map cash in and out week by week for the next quarter.
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Thirteen weeks is one quarter, which is far enough ahead to act on a looming shortfall but near enough that your estimates of who pays when are reliable. It's the standard short-term cash forecast used in finance and turnaround work because it balances visibility with accuracy.
A monthly forecast smooths everything into month buckets, which can hide a mid-month gap where cash briefly runs out even though the month nets positive. The 13-week view works at weekly resolution, so it catches short, sharp cash crunches a monthly view would miss.
A ready-to-use spreadsheet (Excel & Google Sheets): a 13-week grid of categorized cash in and out, automatic opening/closing balances, and lowest-balance and first-negative-week flags — delivered instantly after checkout. AI-assisted, human-built; not financial advice.
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