How to Send an Invoice: A Practical Guide for Small Businesses

To send an invoice, start by preparing a clear document that lists what you are charging for, the total amount due, payment terms like due date and accepted payment methods, and your business contact information. Deliver this invoice to your customer by email, postal mail, or through a digital invoicing tool. This ensures your customer understands what to pay and when, helping you get paid on time.

Why this comes up / what goes wrong

Small business owners often ask how to send an invoice because invoicing is essential to getting paid but can be confusing without a clear process. Many lose time or money due to unclear invoices, sending them late, or not following up properly. Businesses using text messages, email, or spreadsheets for sales may struggle to track invoices and payments efficiently, risking lost revenue or strained customer relationships.

Step-by-step

1. Gather necessary information: Collect customer details such as name, address, and email; your business information; the products or services sold; quantities; prices; an invoice number; and the invoice date.

1. Create the invoice document: Use an invoice template or software to list each item or service, unit price, quantity, subtotal, taxes if applicable, total amount due, payment terms including due date and accepted payment methods, and your contact information.

1. Assign a unique invoice number: This helps with tracking and accounting.

1. Review the invoice for accuracy: Double-check prices, totals, dates, and customer details to avoid disputes.

1. Send the invoice to the customer: Email is common for speed and record-keeping. Postal mail or hand delivery is also possible. If using a CRM or invoicing tool, send it directly from there.

1. Track the invoice status: Note when it was sent, viewed, or paid. Follow up if payment is late.

1. Record payment when received: Mark the invoice as paid and reconcile with your accounting records.

Using tools like HelloGrowthCRM’s built-in CRM dialer and WhatsApp and SMS CRM can help manage follow-ups efficiently and keep your sales process organized.

Example (fictional figures)

A two-location dental practice in Columbus, Ohio, sends an invoice for a teeth cleaning service completed on 05/10/2026.

• Service: Teeth cleaning
• Price: $150
• Sales tax (assumed illustrative rate 7%): $150 × 7% = $10.50
• Total amount due: $150 + $10.50 = $160.50
• Invoice number: 2024-0510
• Invoice date: 05/10/2026
• Payment due date: 06/10/2026

The practice creates an invoice listing the service, price, tax, total, payment terms, and contact details. They email this invoice to the patient. After 06/10/2026, if unpaid, they follow up by phone or message using tools like HelloGrowthCRM’s dialer and messaging features.

Common mistakes

• Not including all necessary information: Prevent this by using a checklist or invoice template to ensure customer details, invoice number, dates, itemization, totals, and payment terms are present.

• Sending invoices late: Schedule invoicing immediately after service or sale to avoid delays.

• Using unclear payment terms: Specify the due date and accepted payment methods clearly on the invoice.

• Failing to track invoice status: Use a system or CRM to monitor when invoices are sent, viewed, and paid.

• Neglecting follow-up: Set reminders to contact customers if payment is overdue to improve cash flow.

• Not reconciling payments: Always mark invoices as paid and reconcile with your records to avoid confusion.

Managing your invoicing and follow-up can be easier with tools that support Quotes, proposals, invoices and payments received all from the deal record.

Doing this in HelloGrowthCRM

HelloGrowthCRM lets you build, send, and track quotes, proposals, and invoices directly from a deal record. You can see the invoice status—sent, viewed, or accepted—on the same screen as your follow-up tasks, helping you stay organized. Payment reconciliation is tied to invoices and deals, making it easier to know which payments have cleared. If you don’t have a sales manager, a founder can assign someone to work the follow-up queue every week to keep sales moving and payments on track.

Frequently asked questions

What details must be on an invoice? An invoice should include your business name and contact information, customer details, a unique invoice number, invoice date, a list of products or services with prices, any applicable taxes, the total amount due, and payment terms including the due date and accepted payment methods.

How should I send invoices to customers? Email is the most common and fastest method, providing a written record. Postal mail or hand delivery is also possible. Using a CRM or invoicing software can automate sending and tracking. HelloGrowthCRM’s WhatsApp and SMS CRM can help manage communication and reminders.

How do I follow up on unpaid invoices? Track your invoices and set reminders to contact customers after the payment due date. Follow-up can be by email, phone call, or text message. HelloGrowthCRM’s built-in CRM dialer helps with timely follow-ups.

Can I send invoices from HelloGrowthCRM? Yes, you can create and send invoices, quotes, and proposals from the deal record. The system tracks their status and links payments to invoices, streamlining your sales and billing process.

What if I don’t have a sales manager? A founder without a sales manager can assign someone to work the follow-up queue every week to keep sales moving and payments on track.

Key takeaways

• Prepare an invoice with clear itemization, payment terms, and contact details.
• Send invoices promptly by email or mail and track their status.
• Avoid common mistakes like missing information, late sending, or unclear terms.
• Use a CRM like HelloGrowthCRM to create, send, and monitor invoices and payments.
• Follow up on unpaid invoices to improve cash flow.
• Assign weekly follow-up tasks to ensure no invoice is overlooked.

Start sending invoices efficiently today. Start on the Free Forever plan (200 leads, no credit card) with HelloGrowthCRM and manage your sales and invoicing in one place.