Every line looks fine. Will the year still go over?
Wages, vendors and travel reprice together, and that correlation is what budget models leave out. Put it back and the comfortable plan shows its real probability of ending over the envelope.
Finance Intermediate Monte Carlo Pro engine
After you install, this is the model to open.
Will the Budget Hold?
- In your spreadsheet, click the Sortia icon in the strip of icons down the right-hand edge. No strip? Click the arrow at the bottom-right to open it. You can also use Extensions, then Sortia, then Open Sortia.
- Click Start from a template and put that name in the search box.
- Pick the card with that name and click Load this template. It arrives on a new tab with real numbers already in it.
This one runs on a Pro engine, and every free install includes five full-quality runs on your own numbers, shared across all five Pro engines rather than five for each. After that, Pro is $199/year.
The answer
Twenty thousand simulated years:
- Opex, mean
- $5.95M
- Opex, P95
- $6.34M
- Over the envelope
- 41% of trials
The plan that reads comfortable line by line breaches the envelope in 41 trials of 100, and the correlation is most of the reason: delete the pairs and rerun to watch the breach rate fall. The gap is the honest size of the buffer to negotiate now rather than explain in Q4.
The model
Four operating lines as triangular ranges from their owners, six +0.4 correlation pairs for the shared inflation, and a $6.0M approved envelope.
| Four opex lines | triangular ranges |
| Correlations | six pairs at +0.4 |
| Envelope | $6.0M |
| P(over the envelope) | simulated |
Once it is in your sheet
- The model arrives with real numbers in it and runs as it stands, so you can press the button first and understand it second.
- Change the numbers to yours. The sheet marks which cells are inputs and which hold formulas, and most labels carry a note explaining the row.
- Press the run button at the bottom of the panel. It is labeled for the tool you are in, and the result lands on its own tab, with a written reading of it beside the figures.
Never used Google Sheets? Start here goes the whole way, in seven steps, and assumes nothing.
Next question
- How far could next year miss the revenue plan?What Will Next Year's Revenue Be, as a Range?
- How much of your risk is just the exchange rate?What Does the Exchange Rate Do to Profit?
- Does growth or margin move your profit more?How Do Growth and Margin Move EBITDA Together?
- How far apart are your best year and your worst?Base, Better, Worse: Save the Three Cases
- Which thirty invoices should you actually check?Pull a Fair Sample of Invoices to Check
- Which forecast should you actually quote?What Will Next Quarter's Fees Be?
Every model like this one, and the method behind them: Monte Carlo simulation.