Small Business 13-Week Rolling Cash Flow Forecasting Model

The Dynamic 13-week Excel cash flow forecasting model for small businesses. Track AR, AP, payroll, debt, reserves, scenarios, shortfalls, weekly liquidity, and management actions.

Small Business 13-Week Rolling Cash Flow Forecasting Model

See cash pressure before it becomes a surprise.

Profitability does not necessarily mean cash is available when the business needs it.

This professional Excel workbook gives small-business owners and finance teams a structured 13-week rolling cash-flow forecasting system for tracking weekly liquidity, customer collections, supplier payments, payroll, debt, recurring costs, financing events, cash reserves, and potential shortfalls.

Instead of looking only at accounting profit, the model focuses on the timing question that matters most for liquidity:

When will cash actually come in — and when will it actually leave the bank account?

The workbook connects accounts receivable, accounts payable, payroll, recurring expenses, debt, direct cash transactions, scenarios, and reserve requirements into a formula-driven weekly forecast.

What you can see

• Current cash position

• Projected cash balance for the next 13 weeks

• Weekly cash inflows and outflows

• Lowest projected cash balance

• Week of minimum projected cash

• Minimum cash reserve

• Potential cash shortfall

• Number of weeks below reserve

• Overdue and total accounts receivable

• Upcoming accounts payable

• Debt payments

• Forecast confidence

• AR aging

• Customer and vendor concentration

• Forecast vs. actual variance

• Management actions requiring attention

Key features

Dynamic 13-Week Forecast
Enter the forecast start date and the workbook automatically builds the 13-week horizon.

Accounts Receivable Timing
Track invoices, due dates, outstanding balances, aging, expected collection dates, collection confidence, and forecast collection weeks.

AR Aging Waterfall
Move receivables through Current, 1–30, 31–60, 61–90, 91–120, and 120+ day categories and connect expected collections to the cash forecast.

Accounts Payable Schedule
Track supplier obligations, payment dates, priorities, critical payments, deferred items, and weekly cash requirements.

Payroll & Recurring Costs
Model weekly, biweekly, semi-monthly, and monthly cash requirements without relying on hidden assumptions.

Debt & Financing
Track principal, interest, payment timing, remaining balances, financing inflows, and debt-service requirements.

Scenario Analysis
Compare Base, Upside, and Downside conditions using cash-flow-specific assumptions rather than simply applying one percentage to everything.

Cash Reserve Alerts
Compare projected ending cash against a configurable minimum reserve and identify weeks requiring management attention.

Cash Shortfall Detection
Identify the first projected reserve breach, lowest cash week, shortfall amount, and major contributors to liquidity pressure.

Weekly Roll-Forward
Update actual cash, receipts, payments, AR, AP, major expenses, and forecast variances before moving into the next 13-week horizon.

Management Action Plan
Record the issue, cash impact, priority, action, owner, due date, expected result, and actual result.

Professional Dashboard
A CFO-style dashboard provides formula-driven KPIs and visual summaries for fast weekly review.

Stress Testing
Test collection delays, unexpected expenses, revenue shortfalls, major repairs, taxes, debt requirements, and payroll increases against the baseline forecast.

Built for decision support

The model is designed to help answer:

How much cash do we have today?

What is expected to come in each week?

What must be paid?

When will receivables convert to cash?

When will payables leave the bank account?

When could cash fall below our reserve?

What is causing the pressure?

What can management influence?

What should we review this week?

Included in the workbook

• Start Here / Complete Instructions

• Executive Dashboard

• 13-Week Cash Forecast

• Assumptions & Settings

• Accounts Receivable

• AR Aging Waterfall

• AR Collection Forecast

• Accounts Payable

• AP Timing Analysis

• Cash Receipts & Disbursements

• Payroll & Recurring Costs

• Debt & Financing

• Base / Upside / Downside Scenarios

• Cash Reserve & Alerts

• Weekly Roll Forward

• Forecast vs. Actual Variance

• Management Action Plan

• Liquidity Prioritization

• Cash Waterfall

• Forecast Confidence

• Concentration Risk

• Stress Testing

• Model Error Checks

• Data Dictionary / Model Guide

• Demo Data

Includes fictional demo data

The workbook opens with clearly labeled fictional demo transactions showing how the model behaves under different liquidity conditions.

Demo examples include:

• Healthy liquidity

• Collection timing pressure

• Cash shortfall conditions

• AR invoices

• AP bills

• Payroll

• Recurring expenses

• Debt payments

• Financing events

Replace the demo data with your own business information before production use.

Important

This is a cash-planning and decision-support model, not a replacement for accounting records, financial statements, tax advice, legal advice, or professional financial advice.

Forecast figures are estimates based on the inputs and assumptions entered into the workbook. Actual cash results can differ.

YOU WILL RECEIVE

1 × Dynamic Excel Workbook (.XLSX)

The workbook includes:

✓ Executive cash-flow dashboard
✓ Dynamic 13-week forecast
✓ Centralized assumptions
✓ Accounts receivable schedule
✓ AR aging waterfall
✓ AR collection forecast
✓ Accounts payable schedule
✓ AP timing analysis
✓ Cash receipts & disbursements
✓ Payroll & recurring costs
✓ Debt & financing schedule
✓ Base / Upside / Downside scenarios
✓ Minimum cash reserve alerts
✓ Cash shortfall detection
✓ Weekly roll-forward
✓ Forecast vs. actual variance analysis
✓ Management action plan
✓ Liquidity prioritization
✓ Cash waterfall
✓ Forecast confidence analysis
✓ Concentration risk analysis
✓ Stress testing
✓ Model error checks
✓ Data dictionary
✓ Complete instructions
✓ Fictional demo data

Primary Keyword:
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Secondary Keywords:

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Copyright © 2026 Mohammed A. Omer. Published by Sarchawa (sarchawa.com). All rights reserved.

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This workbook and its original content, structure, formulas, documentation, and presentation are provided as a digital resource for the licensed customer.

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Customer License

This digital workbook is licensed for personal use and internal business use by the purchaser.

You may use and customize the workbook for your own business operations.

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