◆ Excel · forecast

Budget Optimization

Model three budget scenarios (Base, Reduced 10%, Reduced 20%) using Scenario Manager and a data table so I can recomme…

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2tasks
1roles do it
See the prompt↓More forecast workflows

The same job, four prompts

do it · improve it · decide · become
AExecute — “help me do it”Model three budget scenarios (Base, Reduced 10%, Reduced 20%) using Scenario Manager and a data…+
Model three budget scenarios (Base, Reduced 10%, Reduced 20%) using Scenario Manager and a data table so I can recommend where to cut costs without harming critical projects.
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed.
BImprove — “do it better”Produce scenarios finance and PMs can debate: build Base, 10% cut and 20% cut scenarios, show…+
Produce scenarios finance and PMs can debate: build Base, 10% cut and 20% cut scenarios, show the impact by Project and Cost Category in a comparison table, highlight cuts that reduce noncritical spend, and add a short sensitivity note on which projects cross a risk threshold under each scenario.
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed.

How to do it

the tool · the steps · what to avoid
The tool
Forecast Sheet

The Forecast Sheet in Microsoft Excel helps you predict future values based on your historical data.

  1. 1

    Organize your data into two columns: one for time-based dates or numerical data, and one for corresponding values.

    Best practiceEnsure your time-based series data is ready before creating a forecast sheet.

  2. 2

    Select any cell within your range of data.

    RecommendationSelecting the entire range (e.g., A1:B13) is also effective.

  3. 3

    Click the Data tab in the ribbon.

  4. 4

    In the Forecast group, select Forecast Sheet.

    NoteThis button is also accessible via the shortcut ALT + A + F + C on Excel for Mac.

  5. 5

    In the Create Forecast Worksheet box, pick either a line chart or a column chart for your forecast visualization.

  6. 6

    Specify the Forecast End date by selecting it from the calendar.

  7. 7

    Click Options to adjust settings like Confidence Interval, Seasonality, or Fill Missing Points.

    NoteThe Forecast Sheet uses the FORECAST.ETS function, which employs the Exponential Smoothing (ETS) algorithm.

  8. 8

    Click Create to generate the forecast sheet.

    NoteA new worksheet will be added to your workbook containing the forecast chart and data.

For accurate cash flow analysis or budget planning, always verify your historical data for any errors before generating a forecast.

While the Forecast Sheet is a UI feature, Excel's underlying forecasting functions (FORECAST.LINEAR, FORECAST.ETS) can be used in VBA or other automation scripts.

Glossary

words on this page
Create Forecast WorksheetGenerate a new sheet containing a chart and future values based on historical time-series data.ExampleBased on last year's monthly sales, Excel generates a forecast worksheet predicting next year's sales trends.
Scenario ManagerA What-If Analysis tool that lets you create and save different groups of values as scenarios.ExampleYou use this to compare projected profits under 'Best Case' and 'Worst Case' conditions.
Forecast SheetA tool that creates a new worksheet with a visual forecast and future predictions.ExampleThis feature can predict next quarter's sales and display the trends on a new sheet.
column chartA chart type that displays data in vertical bars, useful for comparing values across different categories.ExampleA chart shows sales for Q1, Q2, and Q3 as separate vertical bars for easy comparison.
Data TableA range of cells showing how changing one or two variables in your formula affects the results.ExampleA data table shows how loan payments change with different interest rates and loan terms.

The real tasks

1 of them
Model several budget scenarios to recommend where to cut costs without harming critical projects.

Who does this

1 roles
PMO Analyst

Questions people ask

honest answers

Because you rarely think 'I want the redaction tool'. You think 'I have to share this without leaking the client's details'. Start from the need, and the feature finds you.

Real. Every job here was drawn from what people in real roles were actually seen doing in Excel — not a feature checklist.

No. Each page gives you a ready prompt you can paste into an AI assistant, plus the plain steps to do it yourself. Start with either — the goal is the finished job, not the tool.