Excel for Finance Intermediate Lesson 7: A 13-Week Cash Flow Forecast

Excel for Finance Intermediate Lesson 7: A 13-Week Cash Flow Forecast featured illustration

📎 This article includes 1 downloadable practice file ↓

⏱ 2 min read

📘 Excel for Finance Intermediate · Lesson 7 of 8

In this article
  1. Running balance
  2. Practice
  3. Continue learning

Profit tells you how the business did; cash tells you whether it can pay salaries next Friday. A 13-week forecast (one quarter, week by week) is the standard tool.

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Running balance

=Opening + SCAN(0, Receipts - Payments, LAMBDA(acc, net, acc + net))

One formula, 13 closing balances. Then the questions that matter:

Question Formula Practice data
Lowest balance =MIN(balances) ₹4,10,000
First week below the ₹5 lakh buffer =XMATCH(TRUE, balances < Buffer) Week 9
Funding needed =MAX(0, Buffer - MIN(balances)) ₹90,000

Week 9 carries a quarterly tax payment. Knowing it in October means arranging a small overdraft or timing a collection, instead of a crisis.

💡 Roll it every Monday: drop the past week, add week 14, and replace forecasts with actuals. Compare last week’s forecast with actuals to see how reliable your receipts estimates are.

Practice

Download the workbook below. Type your formula in the yellow column; the Check column turns green when it matches Excel’s own answer, and the Answers sheet has a working formula for every task. Tax rates and limits in the examples are for practice; verify current rules before real use.

⚡ Interactive Practice Lab & Formula Tester:

Test formulas dynamically in our web formula laboratory or download the companion Excel workbook.

📎 Practice files for this article

  • 📗
    Practice workbookOpening balance, buffer and 13 weeks of receipts and payments, 6 tasks.
    ⬇ XLSX · 14 KB

Free to use for learning. Files with macros (.bas) are plain text — import them with Alt+F11 → File → Import File, and always test on a copy.

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