What Is a Quote?
A quote is a fixed price for a job.
Final agreed price
Based on a defined scope
Often includes expiry date
👉 Use a quote when you know exactly what the job will cost.
What Is an Estimate?
An estimate is an approximate price.
Not final
Can change based on actual work
Used early in the conversation
👉 Use an estimate when details are unclear or the job may vary.
What Is an Invoice?
An invoice is a request for payment.
Sent after work is approved or completed
Based on a quote or final cost
Includes payment terms
👉 Use an invoice to get paid.
Key Differences (Quick Breakdown)
Quote
Purpose: Lock in price
Pricing: Fixed
When to Use: Before job starts
Estimate
Purpose: Give rough cost
Pricing: Flexible
When to Use: Early stage
Invoice
Purpose: Request payment
Pricing: Fixed
When to Use: After approval/work
Common Mistakes Contractors Make
❌ Sending estimates when they mean quotes
❌ Not locking pricing with a quote
❌ Sending invoices without clear scope
❌ Mixing formats and confusing clients
This leads to disputes, delays, and lost trust.
Simple Workflow to Follow
Send an estimate (optional)
Send a quote to lock pricing
Convert to invoice when approved
This keeps everything clean and professional.
Why This Matters
Using the right document:
Builds trust with clients
Prevents pricing disputes
Speeds up approvals and payments
Bottom Line
Estimate = rough idea
Quote = fixed price
Invoice = get paid
Keep them separate, and your business runs smoother.