Selling and Invoicing · Beginner’s Guide

A clear price. A written agreement. A neat invoice.

Selling effectively isn’t just about sending a price via message. A straightforward process protects the relationship: you explain the offer, confirm the price, deliver the service and then invoice for the agreed amount.

VIFLY Editorial Team Verified on 10/09/2026 Related official sources

Before the mission

Describe and cost

With the client

Get a clear agreement

After the sale

Invoice and track

1. Set a price that you can explain

A price isn’t just about the time spent. At the very least, it should enable you to understand what you’re selling, what that sale costs and what it needs to help cover.

Start with the actual quote: deliverables, scope, quantity, deadline and terms. A vague quote leads to additional requests that are difficult to invoice.
Use your ‘Calculate my launch’ area to compare average prices, direct costs, fixed costs and your target sales figures. This calculation provides an indication of your creator business activity, not your net income.
Do not show a VAT amount if you are not authorised to charge it. If you are below the VAT threshold, the applicable information must be checked before issuing an invoice.

2. Make your quotation clear and easy to understand

A quotation isn’t required in every situation, but it’s essential to avoid misunderstandings whenever the price, service or deadline needs to be clearly set out.

Clearly state what’s included: service or product, quantity, price, timetable, validity period and payment terms tailored to your sale.
Plan for what happens if requirements change: any additional requests or significant changes must be approved before being implemented.
Keep proof of acceptance. Depending on the context, a signature or an explicit agreement confirms the scope and price agreed upon.

3. Issue a traceable invoice and track the payment

The invoice formalises the sale. It must be numbered and contain the mandatory information relevant to your situation and that of your customer.

Don’t reuse the same number: consistent and continuous numbering makes it easier to keep track of your accounts and meet your accounting obligations.
Check the applicable details before sending: identity, date, sales details, amounts, VAT or franchise-related information, payment date and terms are common examples – this is not a universal list to be copied blindly.
Send factual reminders after the due date: highlight the invoice, the amount, the expected date and the payment method. Keep a record of your reminders.

Reliability and method

Sources you can rely on.

This factsheet simplifies general information to help you prepare a comparison. It is not a substitute for legal, tax, employment or accounting advice tailored to your situation.

Ministry of the Economy Mandatory details on an invoice Ministry of the Economy Mandatory quotation: relevant activities Public Sector Entrepreneurship VAT-exempt franchise

Carry on without getting lost

VIFLY Guide Micro-enterprise or sole trader: what you’re really choosing. A simple guide to understanding the difference between a micro-enterprise and a sole trader: costs, expenses, VAT, taxation and scenarios to compare. VIFLY Guide Micro-enterprise or SASU: simplicity today, structure tomorrow. Micro-enterprise or SASU: compare simplicity, costs, social security cover, legal status and future growth plans before setting up. VIFLY Guide EURL or SASU: two company types, two different operating models. EURL or SASU: understand the differences in governance, social security arrangements, taxation, articles of association and future development before setting up a company on your own. VIFLY Guide Micro-enterprise ceiling and VAT: two thresholds that don’t mean the same thing. Micro-enterprise thresholds and VAT exemption in 2026: understanding the two thresholds, their effects and the mistakes to avoid when starting out. VIFLY Guide Choosing your creator business status: start with the right questions, not the acronyms. Choosing your legal status without the jargon: the 7 questions to ask yourself before comparing micro-enterprises, sole traders (EI), single-member limited liability companies (EURL) and simplified joint-stock companies (SASU). VIFLY Guide Setting up your creator business: sort out the formalities before opening the one-stop shop. Setting up your creator business via the one-stop shop: the steps, documents, checks and mistakes to avoid before submitting your application. VIFLY Guide Setting up your creator business: proceed in the right order. Setting up your creator business without overlooking the essentials: the steps to take, the one-stop shop, the initial documents and key considerations.

Take action

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