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13-Week Cash Flow Model
Know Your Runway, Week by Week

A pre-built spreadsheet that shows exactly when cash gets tight — before it becomes a crisis. AR aging, scenario planning, and runway all in one place.

$19 one-time
no account required

Buy Now — $19

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What you're getting

Built by CFOs, for CFOs who need answers fast

Ships with realistic SaaS startup sample data so you see the format immediately. Replace the numbers — takes 15 minutes.

Base Case
Downside −20%
Upside +20%
AR Aging
Runway
Instructions
Week Starting Cash MRR Inflows AR Collections Total Outflows Net Cash Ending Balance Runway Signal
Wk 1 — May 12 $847,500 $62,000 $18,400 $(94,200) =SUM(C2:D2)-E2 $833,700 ● 8.8 mo
Wk 2 — May 19 $833,700 $62,000 $9,200 $(88,500) =SUM(C3:D3)-E3 $816,400 ● 8.6 mo
Wk 5 — Jun 9 $779,100 $62,000 $4,100 $(112,800) =SUM(C6:D6)-E6 $732,400 ◐ 6.1 mo
Wk 9 — Jul 7 $651,200 $62,000 $22,600 $(98,400) =SUM(C10:D10)-E10 $637,400 ◐ 5.3 mo
Wk 13 — Aug 4 $512,800 $62,000 $6,800 $(96,200) =SUM(C14:D14)-E14 $485,400 ▼ 4.1 mo

Sample data — Acme SaaS Startup. Replace with your numbers in 15 minutes.

Why this exists

Four problems this solves before your next board meeting

See exactly when cash gets tight

Week-by-week visibility flags trouble 6–8 weeks before it hits. You stop firefighting and start managing.

Board-ready scenarios in one click

Base, Downside (−20%), and Upside (+20%) tabs recalculate automatically. Walk into any board meeting prepared.

AR aging built in

0–30, 31–60, 61–90, and 90+ day buckets with collection probability assumptions. Know which receivables will actually land.

Runway color-coded automatically

Green (>6 mo), yellow (3–6 mo), red (<3 mo). Conditional formatting you don't have to build. Formula cells are locked so you can't accidentally break it.

What's inside

6 tabs. Everything your CFO needs.

Click each tab to see what's on it.

Base Case — Weekly Cash Position

13 rows (one per week) showing starting cash, inflows by category (MRR, AR collections, one-time), outflows by category (payroll, SaaS tools, rent, COGS), net cash, and ending balance.

  • Columns auto-calculate net cash and ending balance from your inputs
  • Color conditional formatting turns cells red/yellow/green based on runway
  • Print-friendly — fits on 2 pages for board handouts
  • Input cells are white; formula cells are locked (blue border)

Downside Scenario — Revenue −20%

Exact copy of Base Case with revenue inflows reduced by 20%. Recalculates automatically when you update Base Case assumptions.

  • Linked to Base Case inputs — change one number, both scenarios update
  • Runway calculation updates to show how many months remain in the downside
  • Red runway indicator fires at <3 months — hard to miss in a board deck

Upside Scenario — Revenue +20%

Same structure with revenue inflows increased by 20%. Shows your best-case runway and cash position if growth accelerates.

  • Useful for fundraising conversations: "Here's where we land if Q3 closes"
  • All three scenarios side by side give investors the full picture

AR Aging Schedule

Breaks outstanding receivables into buckets — 0–30, 31–60, 61–90, and 90+ days — with collection probability assumptions you can tune.

  • Expected cash collected = outstanding × collection probability per bucket
  • Feeds directly into the Base Case inflow model
  • Pre-set assumptions: 95% (0–30), 80% (31–60), 55% (61–90), 20% (90+)

Runway Calculator

Auto-calculates months of runway at current burn rate. Adjustable assumptions for burn change and new ARR.

  • Current runway (months) highlighted in large green/yellow/red number
  • What-if slider: "What happens to runway if burn drops 15%?"
  • Fundraising bridge: "How much do we need to raise to hit 18 months?"

Instructions Tab — Plain English Setup Guide

Step-by-step: replace sample data with yours. No finance degree required. Built for founders who need it done this week, not next quarter.

  • Cell-by-cell guidance for what goes where
  • "Do not edit" warning on formula cells so nothing breaks
  • Contact info for questions

One spreadsheet. No recurring fee.

Instant access to Google Sheets. No account required. 7-day refund guarantee.

$19 vs $200–$500/hr for a fractional CFO
to build this from scratch
Buy Now — $19

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FAQ

Questions

What format is the cash flow model?
Google Sheets. After purchase you get a link to copy the template directly to your Google Drive. File → Make a copy → you own your own version. No Excel required, nothing to install. If you prefer Excel, use File → Download → Microsoft Excel from Google Sheets.
How long does it take to customize?
About 15 minutes. Start on the Instructions tab — it walks through exactly what to replace. Sample data is pre-filled so you can see the format before entering your own numbers. Formula cells are locked so you can't accidentally break the calculations.
What if I need a more powerful forecasting tool?
Try Cash Flow Intelligence — our AI-powered tool that takes your actuals and generates a 12-month forecast with scenario modeling, a CFO action plan, and a Health Score. It costs more ($79 for the full report) but does the analysis for you.
What is your refund policy?
If the spreadsheet doesn't work as described, email us within 7 days for a full refund. No questions asked. Reply to your purchase confirmation email to start the process.