Why Document Types Matter
Using the wrong document at the wrong time can confuse clients, delay payments, and create accounting headaches. Let's break down the three most common business documents and when to use each.
What is an Estimate?
An estimate (also called a quote or quotation) is a document you provide before doing any work. It tells the client how much you expect to charge.
When to Use an Estimate
- Client asks "How much will this cost?"
- Before starting a new project
- When bidding on jobs
- For projects with variable scope
What to Include in an Estimate
- Your business details
- Client's name and contact
- Date and estimate number
- Itemized list of services/products with prices
- Validity period (e.g., "Valid for 30 days")
- Terms and conditions
Important: Estimates are not legally binding, but they set expectations. If scope changes, update the estimate before proceeding.
What is an Invoice?
An invoice is a formal request for payment. You send it after completing work or delivering products. It's saying: "Here's what you owe me."
When to Use an Invoice
- After completing a project or milestone
- After delivering products
- For recurring billing (monthly retainers)
- When requesting deposit or partial payment
What to Include in an Invoice
- Your business name, address, and contact
- Client's billing information
- Unique invoice number
- Invoice date and due date
- Itemized products/services with amounts
- Subtotal, tax, and total due
- Payment methods and terms
Key point: An invoice is a legal document. It creates a record of the transaction and can be used in disputes or for tax purposes.
What is a Receipt?
A receipt is proof that payment has been received. You provide it after the client pays. It confirms: "We got your money."
When to Use a Receipt
- After receiving payment (cash, card, transfer)
- For point-of-sale transactions
- When clients need proof of purchase
- For expense tracking and tax purposes
What to Include in a Receipt
- Your business details
- Receipt number
- Date of payment
- Items/services paid for
- Payment method
- Amount paid
- "PAID" or "Payment Received" notation
Quick Comparison Table
| Document | When to Send | Purpose |
|---|---|---|
| Estimate | Before work | Quote a price |
| Invoice | After work | Request payment |
| Receipt | After payment | Confirm payment |
What About Proforma Invoices?
A proforma invoice is a preliminary bill sent before goods are delivered. It's commonly used in:
- International trade (for customs)
- Requesting advance payment
- Providing a formal quote that looks like an invoice
Think of it as a hybrid between an estimate and an invoice.
Common Mistakes to Avoid
- Sending an invoice before work is done: Use an estimate instead
- Not providing receipts: Clients need them for their records
- Confusing estimates with invoices: Estimates don't request payment
- Missing required information: Always include dates, numbers, and totals
Create All Document Types Free
Invoicyble lets you create invoices, estimates, quotations, proforma invoices, and receipts—all for free, with no signup required. Just pick your document type and start creating.