Update Your Forecasts

How Often Should You Update Your Forecast?

Weekly. No exceptions.

A 13‑week cash flow forecast only works if it reflects reality. That means updating it every week.

Each week, you replace estimates with actual bank numbers and roll the forecast forward by one week. Last week’s guess becomes this week’s fact. Then you extend the forecast so you’re always looking three months ahead.

This weekly rhythm keeps cash top of mind and prevents small issues from quietly turning into big ones.

How Do You Update It?

Base it on real data, not assumptions.

Updating the forecast isn’t just about plugging in numbers. It’s about adjusting expectations based on what’s actually happening.

That means:

• Updating customer payments based on invoice status and real conversations

• Adjusting vendor payment timing based on what you’ve agreed to, not what you hoped for

• Reflecting delays, accelerations, and changes as soon as they happen

If a customer says they’re paying next week instead of this week, the forecast should change. If a vendor agrees to extended terms, update it immediately. The more honest the forecast, the more useful it becomes.

When Should You Review the Big Picture?

Monthly, at a strategic level.

While the forecast should be updated weekly, it’s worth stepping back once a month to review the full picture.

This is where working with a CFO or experienced finance leader adds real value. A monthly review helps you spot trends, understand risks, and connect cash flow to bigger decisions like hiring, pricing, financing, or growth plans.

Weekly keeps you on track. Monthly keeps you aligned.

Why This Matters

Because it allows you to be proactive instead of reactive.

A well‑maintained forecast gives you time. Time to adjust spending. Time to speed up collections. Time to plan instead of panic.

Over time, this reduces stress across the business. Decisions become calmer, more intentional, and less driven by short‑term cash pressure. You stop reacting to surprises because there are fewer surprises to react to.

That’s the real value of a 13‑week cash flow forecast when it’s updated and reviewed the right way.