Arcline Consulting
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Finance · 6 min

Why every small business needs a 13-week cash flow forecast

Annual budgets miss the weeks that hurt. Here is the simple model we set up for clients.

Aisha Rahman
Aisha Rahman
28 October 2026

The problem with annual budgets

A yearly budget tells you if the year should be profitable. It does not tell you whether you can pay wages on the 28th of March. Most cash crises in small firms come from timing, not from losses.

How the model works

List expected receipts and payments week by week for the next 13 weeks. Update it every Monday with real figures. After a month, you will see patterns you never noticed.

What to do with it

Use the forecast to chase late payers earlier, time big purchases and talk to your bank before you need them, not after.

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