The phone rings, a prospective client asks for a rough price for their new wall paint or a complete bathroom renovation. After the call, you send them an initial price estimate – but wait: Is what's on paper now actually a cost estimate or already a quote?
Many tradespeople find it difficult in their stressful day-to-day operations to sharply distinguish these two terms and often do not formulate their documents clearly enough. This can quickly lead to misunderstandings and, in the worst case, to costly trouble with the client. But don't worry, it doesn't have to be this way. With a few simple basic rules, you can ensure absolute clarity and security in your business.
In this article, we'll explain in an easy-to-understand way exactly what constitutes a cost estimate, what characterizes a quote, and what the decisive differences are. This way, you'll be well-prepared and communicate precisely and legally soundly in the future.
What is a Cost Estimate (KVA)?
A cost estimate – often simply referred to as "Kostenanschlag" in the German Civil Code (BGB) (§ 632 Abs. 3 BGB) – is a rough calculation of the probable costs for a specific service. Imagine you're giving an initial assessment of how much a apartment renovation might roughly cost, without yet calculating every screw and the last hour of labor in detail.
The KVA primarily serves to give your client an approximate idea of the financial magnitude. The most important thing here: A cost estimate is generally non-binding. This means that the actual costs on the invoice may later deviate from the KVA. As a tradesperson, you are bound by the KVA, but only in the sense of an "estimated" calculation.
Costs for a Cost Estimate
In principle, the following applies in skilled trades: A cost estimate is not to be remunerated in case of doubt (§ 632 Abs. 3 BGB). This means that unless you have agreed otherwise with your client, your KVA is free of charge for them. This is also the absolute norm in practice.
Only if you have clearly communicated and agreed with the client beforehand that the preparation costs something, may you charge for it. For very elaborate calculations, which might require a long journey, a complex measurement, or external expert opinions, it can certainly make sense to agree on a fee. However, it should be clarified transparently beforehand whether this fee will be credited upon later order placement or not.
Deviations from the Cost Estimate
What happens if the costs turn out to be higher than estimated in the KVA? You do not have to separately inform the client of a so-called insignificant excess; they must accept this in the final bill. As a legal rule of thumb, deviations of 10 to 20 percent apply here, and in rare exceptional cases, up to 25 percent.
However, if the deviation is above that – then it is referred to as a significant excess – you must immediately inform your client as soon as you can foresee this. If you fail to do so, in the worst case, you lose the right to payment for these additional costs.
What is a Quote?
Legally speaking, a quote is a declaration of intent directly aimed at concluding a contract (§ 145 BGB). In direct contrast to a cost estimate, a quote is fundamentally legally binding as soon as your client accepts it.
In plain terms: When you submit a quote, you commit to the stated price and the exact scope of services. If the client then says "Yes, let's do it that way," you have a valid contract under precisely these terms.
A professional quote should always clearly state all essential contract components:
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The exact scope of services (what will be done, what won't?)
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The fixed price (including VAT, possibly material and travel costs)
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Payment terms
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The estimated delivery or execution times
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Very important: A validity period.
For you as a tradesperson, this means: If your client accepts the quote, you are bound by the price. Subsequent price changes or a unilateral reduction of the scope of services are then no longer easily possible. Additional costs incurred after acceptance (e.g., because material suddenly becomes more expensive or you miscalculated) are generally entirely at your expense.
A well-thought-out quote provides your client with immense planning security and builds trust. It shows them: Here, a professional has calculated precisely, and their word can be relied upon.
The Main Difference Summarized
The all-decisive difference between a cost estimate and a quote lies in their binding effect:
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The cost estimate is a non-binding estimation. It provides a price orientation, but the final costs may deviate (within a reasonable scope and with an obligation to inform in case of a significant excess).
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The quote is a binding commitment. As soon as the client agrees, the price is fixed, and you are legally bound by these terms.
This basic understanding is essential to rule out misunderstandings with your clients from the outset and to properly secure your business calculations.
How to Avoid Trouble and Win Clients
To optimally utilize this difference in your daily work and be legally on the safe side, you should integrate these practical tips into your office routine:
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Clear Labeling: Formulate unambiguously whether it is a "cost estimate" or a "quote." Write the corresponding word very clearly on your document, preferably large in the title and additionally in the introduction. This immediately creates clarity for both sides.
"This is a non-binding cost estimate for..."
"We are pleased to submit a binding quote for... to you herewith."
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Set Validity Period: Always give both cost estimates and quotes a clear validity period. This protects you from unpredictable price fluctuations in the material market, and your own capacity planning becomes significantly easier. 14 days to 6 weeks are common here – depending on project size and market situation. After this period, you are no longer bound by your statement.
"This cost estimate is valid until [Date]."
"This quote is valid until [Date]."
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Adjust Detail Level: Consider in advance how detailed your document needs to be. A KVA can often contain a rather rough breakdown of working time and material blocks. A quote, however, should be as precise as possible, so that there are no unpleasant surprises or discussions about the promised scope of services in the end.
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Don't Forget to Follow Up (The Order Booster): Whether KVA or quote: Many documents remain unanswered with the client in everyday life. A personal follow-up – whether by phone, messenger, or email – can extremely increase your closing rate. Often, the client just needs a small impulse to make a final decision. This also shows the true value of a smart tool in daily business operations: A quote follow-up assistant like quidly helps you keep track of all open items and automatically reminds you to follow up, so that no laboriously created quote gets lost. This saves you valuable time and measurably brings in more orders. Top businesses in the construction trades that maintain a clean quoting process achieve impressive order rates of 70 to 80 percent!
Legal Aspects You Should Know
Besides the fundamental distinction, there are a few other points in everyday skilled trade work that you should always keep in mind:
Obligation to Inform in Case of KVA Excess
As already mentioned: If the cost estimate significantly exceeds the estimated costs (rule of thumb: more than 10 to 20%), you must immediately inform your client. If you fail to do so, you lose your claim to the additional costs and may even become liable for damages. Take this obligation seriously and pick up the phone sooner rather than later.
Data Protection (GDPR) – Also Relevant for Quote Creation
The General Data Protection Regulation also affects you as a trades business, completely independent of your business size. As soon as you enter personal data of clients (names, addresses, phone numbers) into your software or on paper, the GDPR applies. This means for you:
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Transparency: Your clients must be able to read (e.g., on your website) why you store their data.
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Security: You must take technical and organizational measures to protect this data from unauthorized access (antivirus protection, secure passwords in the office).
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Documentation: You should maintain a record of your processing activities (a simple list that keeps track of what data you store is often sufficient).
No Obligation to Create a KVA
There is no legal obligation to mandatorily create a cost estimate before a job. Unless your client explicitly requests it, or it is simply common practice in certain industries (e.g., in insurance cases). So, you can also submit a binding quote directly at any time if all details are already known to you and that represents the shorter official channel for you.
Note: This article does not constitute legal advice. In case of doubt, your Chamber of Skilled Trades or a specialized lawyer can help.