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How to Fill Out an Invoice

How to Fill Out an Invoice

Fill out an invoice by adding business and client info, unique numbers, dates, itemized services, taxes, payment terms, and clear instructions for timely payment.

To fill out an invoice effectively, include your business and client information, assign a unique invoice number, and specify the invoice and due dates. Next, itemize the products or services provided with clear descriptions, quantities, rates, and totals. Add applicable taxes or discounts, outline payment terms, and include any notes or supporting documents as needed.

Include Your Business Information

Provide complete information about your business:

  • Business Name: Official company or sole proprietorship name.
  • Logo: Optional, but adds professionalism.
  • Address: Street, city, postal code, and country.
  • Contact Details: Email, phone number, and website if applicable.

Example:

ABC Consulting
123 Main Street, Suite 400
New York, NY 10001
Email: info@abcconsulting.com | Phone: (123) 456-7890

Tip: Clear business information ensures the client knows who issued the invoice and how to contact you for questions or payment issues.

Add Client Information

Include the client’s details to clearly identify who the invoice is for:

  • Client Name or Company Name
  • Contact Person (if applicable)
  • Address
  • Email or phone

Example:

ABC Marketing
Attention: Sarah Johnson
456 Elm Street
Los Angeles, CA 90001
Email: sarah.johnson@abcmarketing.com

Tip: Correct client information helps prevent delays or misdirected payments.

Assign an Invoice Number

Invoice numbers help in invoice tracking and record-keeping:

  • Use sequential numbering: 001, 002, 003…
  • Consider adding year or client/project codes: 2025-001, ABC-002
  • Keep numbers unique to avoid duplication

Tip: Consistent numbering simplifies accounting, auditing, and payment tracking.

Include Dates

Dates provide context and set payment expectations:

  • Invoice Date: The date you issue the invoice.
  • Due Date: When payment is expected, based on agreed terms (e.g., 30 days from invoice date).

Example:

Field
Date
Invoice Date
September 15, 2025
Due Date
October 15, 2025

Tip: Clearly showing the due date helps avoid late payments and misunderstandings.

List Products or Services

Provide a detailed breakdown of the goods or services provided:

  • Include item name or description
  • Specify quantity or hours
  • Include unit price or hourly rate
  • Calculate line totals for each item

Example:

Item
Description
Quantity
Rate
Total
Web Design
Homepage + 3 inner pages
1
$800
$800
Consulting
2-hour strategy session
2
$200/hr
$400
Total
$1,200

Tip: A clear, itemized table reduces client questions and helps justify the total amount.

Add Taxes and Discounts

If applicable, include:

  • Sales tax or VAT
  • Discounts (early payment, bulk orders, promotions)
  • Subtotal and Total

Example:

Description
Amount
Subtotal
$1,200
Sales Tax (10%)
$120
Discount
-$50
Total
$1,270

Tip: Clearly listing taxes and discounts ensures transparency and avoids disputes.

Specify Payment Terms

Include instructions and expectations for payment:

  • Accepted Payment Methods: Bank transfer, PayPal, credit card, etc.
  • Payment Due Date: Reinforce the date.
  • Late Fees: Mention any penalties for overdue payments.

Example:

Payment can be made via bank transfer to:
Account Name: ABC Consulting
Account Number: 123456789
Bank: XYZ Bank
Payment is due by October 15, 2025. Late payments may incur a 2% monthly fee.

Tip: Clear payment terms reduce confusion and encourage timely payment.

Add Notes or Special Instructions

Use this section for optional information that may help the client:

  • Thank the client for their business.
  • Include project references or PO numbers.
  • Provide instructions for recurring invoices or installment payments.

Example:

Thank you for choosing ABC Consulting. Please include the invoice number in your payment reference.

Tip: Personalized notes help maintain client relationships.

Attach Supporting Documents (If Necessary)

Some invoices may require additional attachments:

  • Receipts for reimbursable expenses
  • Timesheets for hourly work
  • Project milestones or approvals

Tip: Including supporting documents improves clarity and speeds up approval for payment.

Review and Send

Before sending:

  • Double-check all numbers (totals, taxes, discounts)
  • Verify client information
  • Confirm attachments open correctly
  • Choose email, invoicing software, or client portal for sending

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