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One-Page Business Plan Builder
Create a compact customer, problem, offer and economics summary with an editable assumption test log. Save a backup or print the plan.
Enter your own assumptions, calculate and keep a backup. Load the fictional example to see a filled-in report.
Set up your worksheet
Your report
Enter your details, then calculate to review results.
Save or download your work
Work stays in this page until you choose Save on this device. Device saves belong to this browser and can be removed by clearing browser data. JSON keeps an editable backup; CSV and PDF keep a report.
One-Page Business Plan Builder: complete guide
What this worksheet does
Prints the core customer, problem, offer and economics with an evidence log. A one-page summary is compact with up to three short assumptions; additional or long entries can require more pages. Supported is a user-entered status, not independent proof. This is not a funding application.
Keep up to 20 editable entries. The worksheet runs in your browser and does not send its entries to another service. The calculations use the inputs you provide; currency selectors label amounts without conversion.
How to use it
- Set a descriptive worksheet name and complete the settings for your planning period.
- Add one entry per record. Use consistent units and keep the evidence behind your assumptions.
- Calculate and inspect the report, including any review notes. Change an input and calculate again to replace the old result.
- Save an editable backup before changing a scenario. Use the related guide below for the wider operating workflow.
Inputs and units
| Field | Rule |
|---|---|
| Worksheet name | Required for calculation. Up to 160 characters. |
| Specific customer | Required for calculation. Up to 160 characters. |
| Problem and existing workaround | Required for calculation. Up to 600 characters. |
| Offer and service boundary | Required for calculation. Up to 600 characters. |
| Revenue and cost assumptions | Required for calculation. Up to 600 characters. |
| Plan review date | Required for calculation. Valid calendar date, 1900–2200; no timezone shift. |
| Assumption to test | Required for calculation. Up to 160 characters. |
| Evidence observed | Optional. Up to 600 characters. |
| Next test | Required for calculation. Up to 600 characters. |
| Test owner | Required for calculation. Up to 160 characters. |
| Test due date | Required for calculation. Valid calendar date, 1900–2200; no timezone shift. |
| Evidence status | Required for calculation. Choose Untested, Supported, Contradicted. |
Calculation and scope
Prints the core customer, problem, offer and economics with an evidence log. A one-page summary is compact with up to three short assumptions; additional or long entries can require more pages. Supported is a user-entered status, not independent proof. This is not a funding application.
Fictional worked example
Load the fictional example to reproduce this report. The sample is an original illustration, not a customer result or a market benchmark. The dollar figures below use USD.
| Result | Sample value |
|---|---|
| Assumptions entered | 2 |
| Untested | 2 |
| Contradicted | 0 |
| Review date | 2026-11-13 |
| Assumption | Evidence observed | Next test | Owner | Due | Entered evidence status |
|---|---|---|---|---|---|
| A prospect will pay 1250 for this package | Three conversations; no paid sale yet. | Offer one paid pilot with written scope. | Owner | 2026-10-23 | Untested |
| Delivery fits in 20 hours | No completed pilot time log. | Track the pilot delivery and revision hours. | Designer | 2026-11-06 | Untested |
Save, restore and export
Save on this device writes an explicit save to this browser; it does not download a file or sync across devices. Clearing browser storage can remove it. Download backup keeps an editable JSON file for this exact worksheet. Import previews the backup before replacing current entries; save again if you want to replace the device save. CSV contains the calculated report, not an editable import format. Print / Save PDF opens the browser print dialog; choose Save as PDF where available.
Questions and limits
Is the example my result?
No. It is fictional data. Replace its assumptions with your own records, then calculate again.
Does saving share my worksheet?
No. Device saves belong to this browser. Move an editable worksheet with its JSON backup and keep sensitive information out of a shared device.
Does a report establish that my plan is correct?
No. Arithmetic can be consistent while the input assumptions are wrong. Keep evidence, review the scope described above and check any decisions against your real records.
Continue the workflow
Freelance Business Plan: Capacity, Pricing and a 90-Day Example. One-Page Business Plan Template With an Assumptions Log.
Choose your next planning step
- service-business financial projections worksheet: Test the monthly money assumptions behind a service offer.
Put the next business-plan action on a schedule
Review Small Business Planner 2026–2028 for the documented goals, tasks and finance workflow behind your assumption tests. Small Business Planner 2026–2028 — Goals, Finance & Operations. Paid products are separate; the free JSON backup is not a paid-product import file.