Professional Quote: Write Commercial Proposals That Convert
A well-written quote is the first step to winning a contract. It is your commercial business card: it must be professional, clear, complete and convincing. In Switzerland, even though a quote is not subject to the same legal obligations as an invoice, it legally commits the professional to the prices and services announced.
Difference Between Quote, Offer and Invoice
| Criterion | Quote / Offer | Invoice |
|---|---|---|
| Timing | Before the service | After the service |
| Legal obligation | Not mandatory (except regulated sectors) | Mandatory for any transaction |
| Commitment | Commits the supplier on price | Payable upon receipt |
| Accounting value | None (no accounting entry) | Journal entry |
| VAT | Indicative (estimated amount) | Due (VAT declaration) |
| Numbering | Sequential recommended | Sequential mandatory |
Important: under Swiss law (Code of Obligations, art. 7), a quote sent with precise prices and conditions constitutes a binding offer. A client who accepts it creates a legally binding contract.
Mandatory Information on a Swiss Quote
Issuer Identification
- Full name or company name
- Postal address
- UID number (CHE-XXX.XXX.XXX) if registered with the Commercial Register
- VAT number (CHE-XXX.XXX.XXX MWST) if subject to VAT
- Contact email and phone number
Recipient Identification
- Client's name or company name
- Full address
- Contact person (recommended)
Quote Content
- Unique quote number (e.g.: QUO-2025-001)
- Issue date
- Validity date (period during which the offer is valid)
- Detailed description of each service or product
- Unit prices and quantities
- Amount excl. VAT (before tax)
- VAT amount with applicable rate (if subject to VAT)
- Amount incl. VAT (all taxes included)
- Payment terms: deposit, installment schedule, deadline
- Execution deadlines: planned timeline
- General terms: reference to your T&Cs
Structure of an Effective Quote
1. Professional Header
Your header should inspire confidence at first glance:
- Your company logo
- Complete contact details
- Clean design consistent with your visual identity
- Quote number and date clearly visible
2. Personalized Introduction
Do not skip this step. A personalized introduction shows that you have understood the client's needs:
Following our meeting on [date], we are pleased to submit our proposal for [project description]. This offer has been designed to meet your specific needs regarding [main objective].
3. Detailed Description of Services
Break down your offer into clear phases or deliverables. For each item:
- Precise description of what is included
- Expected result / deliverable
- What is explicitly excluded (to avoid misunderstandings)
4. Structured Price Table
| Description | Qty | Unit Price excl. VAT | Total excl. VAT |
|---|---|---|---|
| Phase 1: Audit and needs analysis | 1 | CHF 2,500 | CHF 2,500 |
| Phase 2: Solution development | 40h | CHF 150 | CHF 6,000 |
| Phase 3: Testing and acceptance | 8h | CHF 150 | CHF 1,200 |
| Phase 4: Training (4 people) | 4h | CHF 180 | CHF 720 |
| Subtotal excl. VAT | CHF 10,420 | ||
| VAT 8.1% | CHF 844 | ||
| Total incl. VAT | CHF 11,264 |
5. Terms and Commitments
- Execution deadline: total duration and timeline per phase
- Payment terms: deposit (30-50% upon order), balance upon delivery
- Offer validity: 30 days (standard in Switzerland)
- Warranties: duration and scope of post-delivery warranty
- Modification clause: procedure in case of scope change
6. Acceptance Section
To formalize the client's agreement:
By signing this quote, the client accepts the conditions described above as well as our general terms and conditions available at [link].
Client signature: _________________ Date: _________________
Approved and agreed
Validity Period: Best Practices
Recommendation: 30 Days
- Protects against rising subcontracting or raw material costs
- Creates a sense of urgency for the client's decision
- Allows you to revise the offer if it is declined
Variations by Context
| Project Type | Recommended Validity |
|---|---|
| Simple service < CHF 5,000 | 15-30 days |
| Medium project CHF 5,000-50,000 | 30 days |
| Complex project > CHF 50,000 | 30-60 days |
| Public tender | As per specifications |
Legal Notice
Always add: "Offer valid until [specific date]. After this date, prices and conditions are subject to revision."
Follow-Up and Quote Tracking
Effective Follow-Up Process
| Timing | Action | Channel |
|---|---|---|
| D+2 | Courtesy follow-up | Email or call |
| D+7 | Value-added follow-up | Email + proposal for discussion |
| D+15 | Pre-expiry follow-up | Formal email |
| D+30 | Quote expired, renewal proposal |
ToBill automates these follow-ups and alerts you when a quote has not been viewed.
Conversion Statistics
Track your commercial performance in ToBill:
- Conversion rate: accepted quotes / quotes sent (benchmark: 30-50%)
- Average conversion time: number of days between sending and acceptance
- Average quote amount: to segment your offers
- Sales pipeline: total amount of quotes awaiting response
Quote to Invoice Conversion
1-Click Process with ToBill
- The client accepts the quote (by email, signature or verbally)
- Mark the quote as "Accepted" in ToBill
- Click "Convert to invoice"
- ToBill automatically carries over all line items, amounts and conditions
- Adjust if necessary (deposit, installment schedule)
- Generate and send the invoice with QR code
Time saved: 5 minutes saved per conversion, with zero risk of transcription error.
Deposit Management
For large projects, invoice in multiple stages:
- Deposit upon order: 30-50% of the total amount
- Interim invoice: at the end of each phase
- Balance upon delivery: remaining amount
ToBill automatically manages deposit tracking and balance calculation.
Types of Quotes by Activity
Fixed-Price Projects
- Break down into phases with clear deliverables
- Fixed price per phase + total
- Ideal for: web development, design, one-off consulting
Time and Materials Projects
- Hourly or daily rate
- Estimated number of hours (non-contractual)
- Billing based on actual time with guaranteed maximum (optional)
- Ideal for: maintenance, support, agile projects
Quotes with Options
Offer variants to increase your chances:
- Essential Option: the minimum viable
- Standard Option: the recommended choice (highlight it)
- Premium Option: all features
Tip: studies show that offering 3 options increases the conversion rate by 20% compared to a single offer.
Legal Aspects of Quotes in Switzerland
The Quote Commits the Professional
Under Swiss law:
- The announced price is firm and final (unless an explicit contrary clause)
- You cannot increase the price after acceptance, except for a scope change agreed in writing
- Deadlines are indicative but may engage your liability in case of significant delay
Mid-Project Modifications
If the client requests modifications that exceed the initial scope:
- Stop additional work until it is validated
- Issue a supplementary quote detailing the modifications and their cost
- Have it signed before executing the additional work
- Convert to invoice once the work is completed
Quote Disputes
In case of disagreement:
- The signed quote serves as evidence (it is a contract)
- General terms apply if they were communicated and accepted
- In case of dispute, mediation is recommended before legal action
Quote Template with ToBill
Full Customization
- Logo and colors of your brand
- Professional layout with structured sections
- Pre-filled general terms
- High-quality PDF export
- Available in 4 languages: FR, DE, IT, EN
Templates by Sector
ToBill offers pre-configured templates for:
- Web development and IT
- Consulting and coaching
- Trades and construction
- Design and communication
- Fiduciaries and professional services