A business can be profitable on paper and still run out of cash. Cash flow forecasting is the process of projecting when money comes in and when it goes out, typically on a 13-week rolling basis. This projection reveals dangerous gaps that monthly P&L statements miss entirely, such as weeks where rent, payroll, and quarterly tax payments all hit simultaneously. Greg Monaco, CPA provides cash flow forecasting as part of fractional CFO engagements for NJ businesses.

You can be profitable on paper and still run out of cash. That’s the cash flow trap.

How Do I Build a 13-Week Cash Flow Forecast?

Start with current bank balance. Add expected inflows (AR payments, new revenue). Subtract expected outflows (rent, payroll, vendor payments, taxes). Project forward 13 weeks.

Why Is a Weekly Cash Flow Forecast Better Than a Monthly One?

A monthly forecast can hide dangerous gaps. If rent, payroll, and quarterly taxes all hit the same week, you’ll have a crunch even though the month looks fine.

What Should I Do When My Business Cash Flow Is Tight?

Accelerate collections, delay non-essential expenses, negotiate vendor terms, tap a line of credit, and time large purchases to your cash cycle.

How Do I Make Cash Flow Forecasting a Regular Habit?

Updated monthly for bookkeeping clients, weekly for fractional CFO clients. The forecast becomes more accurate as you learn your business’s patterns.

Key Takeaway

A weekly cash flow forecast updated monthly reveals problems weeks before they become crises. Start with your current bank balance, add expected AR collections and new revenue, subtract known obligations (rent, payroll, taxes, vendor payments), and project forward 13 weeks. The forecast gets more accurate over time as you learn your business's payment patterns.

Related reading: Does Your NJ Business Need a Fractional CFO? | Understanding Financial Statements | Accounts Receivable Management | Fractional CFO services

## Frequently Asked Questions

What is a 13-week cash flow forecast?

A 13-week cash flow forecast is a rolling projection that maps expected cash inflows and outflows for the next 13 weeks (approximately one quarter). It provides a detailed, short-term view of your cash position that monthly financial statements cannot match. This forecast reveals specific weeks where cash may run short due to overlapping obligations like rent, payroll, and quarterly tax payments.

How is cash flow different from profit?

Profit is an accounting concept that measures revenue minus expenses over a period. Cash flow measures actual money moving in and out of your bank account. A business can be profitable on paper while running out of cash if customers pay slowly, if large expenses hit at once, or if the business is investing in growth. Cash flow forecasting addresses this gap.

How often should I update my cash flow forecast?

Update your cash flow forecast weekly, rolling it forward one week at a time. Compare actual results to projections each week to improve accuracy over time. Monthly updates are the minimum, but weekly updates catch emerging problems faster and give you more time to take corrective action such as accelerating collections or delaying discretionary spending.

What are the biggest cash flow risks for NJ businesses?

The biggest cash flow risks for NJ small businesses include slow-paying clients stretching AR beyond terms, quarterly estimated tax payments (federal and NJ) creating periodic cash drains, payroll obligations that cannot be delayed, seasonal revenue fluctuations, and unexpected expenses. NJ's relatively high tax rates mean quarterly tax payments are often larger than business owners anticipate.