← Back to all ideasPRACTICAL GUIDE · FROM IDEA TO FIRST CUSTOMER · N° 07

Spreadsheet templates

Build formula-based templates for family budgets, inventory, project costs and invoices.

✓ 7-day action plan⌁ Illustrative startup budget: €0–100◷ Read time: 5–7 minutes
Start with the worked example ↓
Your offerWorked example7-day planPrice calculatorFirst customersRisks
01 / Your offer

What do you actually do and who would pay?

A product or service you could offer

Build formula-based templates for family budgets, inventory, project costs and invoices.

Who you could serve

Freelancers, shopkeepers, associations and people managing budgets.

You do not need a large company for the first experiment. You need a visible result, a clear proposal and agreement on deliverables.

02 / Worked example

Your first demonstration project

Do not begin with a 50-item catalog. Build one inspectable sample that makes your offer understandable.

✳ Worked example

A three-sheet workbook: input, monthly summary and chart, with instructions and sample data.

Build the sample, step by step

  1. Build the first sheet.
  2. Test formulas on 30 transactions.
  3. Export a PDF and write a one-page guide.

Basic tools and supplies

LibreOffice CalcCSV sample dataPDF export

Check whether free tiers are enough; do not buy subscriptions before testing demand.

03 / 7-day plan

A practical 7-day starting plan

Day 1

Define the problem you solve and the exact deliverable; avoid vague offers such as “anything you need”.

Day 2

Review five comparable offers and note what is included, delivery time and common customer questions.

Day 3

Create the demonstration project with fictional data or material you own.

Day 4

Time the work, enter costs in the calculator below and compare two possible prices.

Day 5

Prepare three photos or screenshots and a concise offer: deliverable, deadline and included revisions.

Day 6

Show your work to five suitable prospects with personalized, lawful outreach rather than mass spam.

Day 7

Collect responses, improve the offer and plan the next test. No sales in one week does not settle the idea’s viability.

04 / Price calculator

Editable price calculator

These are made-up demonstration figures, NOT market quotes or guaranteed income. Enter your own costs.

Amount left after entered costs—
Price − materials − (hours × hourly value) − other costs. Before taxes, platform fees, returns and omitted expenses.
05 / First customers

How to find your first three customers

1

Choose a specific customer group

Freelancers, shopkeepers, associations and people managing budgets.

2

Share an example, not a vague promise

A three-sheet workbook: input, monthly summary and chart, with instructions and sample data.

3

Offer a small trial with measurable deliverables

export a PDF and write a one-page guide.

Sample introductory message

Hello! I am testing an offer for “spreadsheet templates” and have prepared a concrete sample. If it might be useful to you, I can share the example, delivery timeline and a clear price. Would you like to see it?

06 / Risks

What could go wrong and what to check before selling

Do not promise accounting compliance; test formulas and protect imported data.

Check your country’s tax rules, consumer rules and any relevant product safety obligations. Do not put real personal data in a public portfolio.

Checklist before asking for your first order

  • I can show a sample I created myself.
  • I know what the customer receives and when.
  • I calculated real time and costs.
  • I checked usage rights and relevant risks.
  • I have a way to gather feedback.

Educational guide. All example budgets and prices are hypothetical, not financial advice or earnings promises.

What next?