The Difference Between a Quote and an Estimate for US Contractors
Quote and estimate are often used interchangeably – but they have very different legal and practical meanings. Using the wrong one costs US contractors thousands of dollars in disputes every year.
What Is a Quote?
A quote (also called a “bid” in commercial contracting) is a fixed price offer for a defined scope of work. Once accepted by the customer, a quote becomes a legally binding contract at that price.
If you quote $4,500 to install a new HVAC system and the job takes longer than expected, you absorb the difference. The customer owes $4,500.
Use a quote when:
– The scope is clearly defined and measurable
– You can accurately estimate time and materials
– You want to give the customer certainty
What Is an Estimate?
An estimate is an approximate cost for work where the final price may vary. Estimates are appropriate when:
– Scope may change once work begins (e.g., unknown condition of walls behind drywall)
– Material prices are volatile
– You haven’t yet fully surveyed the job
Estimates do not bind you to a fixed price, but in most US states they must be reasonable – a final bill 30-50% higher than an estimate without prior customer approval is legally problematic.
The Practical Rule
Use quotes for most residential work where you can survey the job properly. They win more business (customers prefer certainty) and reduce disputes.
Use estimates for exploratory or complex commercial work where unknowns are inherent – and always include a clear written explanation of what would cause the price to vary.
Change Orders: The Essential Companion
Whenever the scope changes beyond your quote, issue a written change order before doing the extra work. This protects both you and the customer:
“Change Order #1: Additional electrical circuit to outdoor outlet – labor $180, materials $45. Total: $225. Customer approval required before work proceeds.”
In most US states, contractors who perform extra work without a signed change order struggle to collect payment for it.
Frequently Asked Questions
Is a verbal quote legally binding in the US?
In theory, verbal contracts are enforceable, but they’re almost impossible to prove in a dispute. Always get acceptance in writing – even a text confirmation of a quoted price provides legal protection. Most states’ contractor laws specifically recommend written contracts for jobs above a threshold (often $500-$1,000).
What should a contractor’s quote say at the top – “Quote” or “Estimate”?
Use whichever accurately describes what you’re providing. If you’re committing to a fixed price for a defined scope, say “Quote” or “Proposal.” If the final price may vary, say “Estimate” and explain why.
Kwowta lets US contractors issue professional quotes and change orders from their phone. Try free for 6 months at kwowta.com.
