Free tool

13-week cash flow forecast

Start from the cash in the bank, add what comes in and what goes out, and see each week's closing cash. Find the tight week before it arrives.

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Starting point

Amounts in any one currency. Weeks run seven days from the start date.

The buffer you don't want to go under.

Receipts and payments

Recurring items repeat from their first date. Monthly items on the 29th to 31st fall on the last day of shorter months.

    Your forecast

    Lowest point
    First week below minimum
    Closing cash, week 13
    Net cash flow
    Closing cash by week
    Week-by-week receipts, payments, net cash flow and closing cash
    WeekStartingReceiptsPaymentsNetClosing cash

    The method

    How a 13-week forecast works.

    A 13-week forecast covers one quarter, week by week. It's short enough to be accurate and long enough to see a squeeze coming: the week payroll, rent and a tax payment land together while customers are still paying last month's invoices.

    1. Start with the cash you have today.
    2. Place every receipt and payment in the week it actually moves cash, not the week it was invoiced.
    3. For each week, closing cash is opening cash plus receipts minus payments. That closing figure is next week's opening cash.
    4. Compare each week's closing cash with your minimum. The first week under it is when you need a plan: chase a customer, move a supplier run or arrange funding.

    Update it every week. Roll forward by one week, replace the forecast for the week just gone with what really happened, and see whether the low point has moved.

    Illustrative only. This is a simplified model for planning and learning. It isn't financial, accounting or tax advice, and the example figures are made up. Check anything you rely on with your accountant.

    Your invoices and bills, already in the forecast.

    Connect QuickBooks Online, Xero, Zoho Books or TallyPrime. Each company gets 90 days free from signup (first 100 signups, with 100 AI credits), no card needed.