Fixed Price or Hourly Rate: Which Model Works Better for Freelancers

Many freelancers in Switzerland face the same question when a new project comes in: Should I bill by the hour or agree on a fixed price? The answer depends on more than personal preference — it directly affects your cash flow, liability risk, and administrative burden. And very concretely, it shapes what appears on your invoice at the end.

Two Models, Two Logics

Hourly Rate: Transparency with Effort

With an hourly rate, you charge for every hour worked. The advantage: you bear no risk for extra work caused by the client — correction rounds, last-minute requirement changes, or poorly delivered materials won't hit you financially.

The disadvantage: many clients want to know what they'll pay in the end. Without a cost ceiling, this can create tension, especially when the final invoice comes in higher than expected. There's also more administrative work: you must document hours carefully, and clients can ask questions or challenge line items.

In Switzerland, there's no legal requirement to print hour documentation on the invoice itself — though clients can request a separate time log as an attachment. What's legally required and what clients are actually entitled to demand is explained in detail in our guide on hour logs on freelancer invoices.

Fixed Price: Predictability with Price Risk

A flat fee gives clients budget certainty — often a strong sales argument. You can justify a higher amount because you're taking on the risk. If the project runs smoothly, your effective hourly rate will be higher than with time-based billing.

The risk sits with you: if a project spirals, you're working for less. Without a clearly defined scope of work, a fixed-price project can quickly become unpaid extra work — the classic scope creep trap.

What Must Go on Your Invoice — Depending on Your Model

Regardless of billing model, Switzerland applies the same mandatory fields to all invoices. If you're VAT-liable (turnover above CHF 100,000 per year), you must separately show your VAT number, the applicable tax rate, and the tax amount. The standard rate remains 8.1% in 2026; the special rate for accommodation is 3.8%; the reduced rate is 2.6%.

Hourly Rate Invoice:

• Hourly rate (e.g., CHF 120.00 / hour)
• Number of hours billed
• Service description per line item
• Any expenses listed separately

Fixed-Price Invoice:

• Project name and clearly defined scope of work
• Total amount (net)
• VAT amount (if tax-liable)
• Reference to quote or contract recommended

With flat fees, a detailed service description is especially important: if your invoice just says "website," disputes can easily arise. Better to write: "Concept, design, and implementation of website per quote no. 2026-14 dated 15 July 2026."

Hybrid Models: Fixed Price Plus Time-and-Materials

In practice, a hybrid approach often works best: the core deliverable at a fixed price, changes and extras billed at an hourly rate. It's a sensible compromise — but it requires clear upfront communication and a clean separation of line items on the invoice:

Item	Type	Amount
Core deliverable per quote	Fixed	CHF 3,500.00
Additional revision round (3 h @ CHF 120.00)	Time & materials	CHF 360.00
Travel expenses for client meeting	Expenses	CHF 48.50
Subtotal		CHF 3,908.50
VAT 8.1%		CHF 316.59
Total		CHF 4,225.09

Don't Forget Payment Terms

Whichever model you choose: payment terms belong on every invoice. Thirty days net is standard in Switzerland, but nothing forces you to use it — 10 or 20 days are equally valid. What happens when an invoice goes unpaid and how to issue reminders correctly is covered in detail in our guide to the Swiss dunning process.

QR-Bill: Today's Standard

Since 2022, the QR-bill has been Switzerland's standard invoice format. Freelancers should use it too — clients, particularly larger firms and government bodies, prefer or even require the QR code. It contains your IBAN (or QR-IBAN), the amount, and a reference number, and it dramatically simplifies payment processing on the recipient's end.

If you want to create invoices directly with a QR code, the SnapBill app offers a straightforward tool — enter the amount, service description, and your IBAN, and you're done.

Common Mistakes When Switching Between Models

• Verbal agreement, written ambiguity: If the client hears "fixed price" but there's no written quote on file, the final invoice can spark disagreement.
• Hourly rates not communicated upfront: If the client sees the hourly rate for the first time on the invoice, surprise is guaranteed.
• VAT forgotten or assigned incorrectly: Services delivered abroad may be VAT-exempt. If you're unsure about VAT rates and exceptions, you'll find a structured overview in our article on Swiss VAT basics 2026.
• Expenses not itemized: A blanket "Expenses CHF 200.00" rarely holds up in practice — break it down.

At a Glance

• Hourly rate protects you from overruns but requires documentation and creates uncertainty about the final sum for clients.
• Fixed price offers predictability and demands a precise scope of work; the risk stays with you.
• Hybrid model is a good compromise but needs clean invoice structure.
• Mandatory fields (VAT number, tax rate, due date) apply regardless of model.
• The QR-bill is now the standard — for freelancers too.
• Describe services as specifically as possible: this protects you in disputes.