From early-stage startups to established corporations, invoice management is an integral aspect of running a business. Effective invoicing can improve cash flow, increase efficiency, and foster stronger relationships with clients. But it's not as simple as sending a document with a payment request: invoicing involves a careful balance of precise information delivery, professional presentation, and timing.

Crafting an invoice is an opportunity to present information in a simplified, transparent way that minimises the chance of confusion, potential disputes, and late payments. Businesses can use invoices to improve customer retention by being professional and making the experience convenient, which leaves a positive impression on clients.

Below, we'll break down the process of creating invoices, including their components, what information is required, and best practices.

What's in this article?

• What is an invoice?
  
• What are the different types of invoices?
  
• Invoice requirements: Which pieces of information are mandatory to include?
  
• How to create an invoice step-by-step
  
• Different ways to create invoices
  
• What are the best practices for invoice creation?
  
• How Stripe Invoicing can help
  
• FAQs about creating an invoice
  

What is an invoice?

An invoice is a formal, time-stamped document a seller issues to a buyer, recording a completed transaction. It lists the goods or services provided and the payment owed, serving as both a payment request and an official record of the sale. It forms part of the business's financial accounts as evidence of income.

Invoices serve several purposes at once:

• Requesting payment: Telling the client what they owe

• Recordkeeping: Documenting sales for accurate financial records and cash flow management

• Tracking sales: Helping businesses monitor revenue sources and performance

• Tax preparation: Proof of income for the seller and proof of expense for the buyer

• Legal protection: Evidence of what was sold, for how much, and when, in case of dispute or audit

• Accounts receivable (AR) management: Tracking paid vs. outstanding invoices to manage cash flow

• Client communication: Giving clients clear details on price and quantity and a description of what they purchased

In short, an invoice records the transaction, supports financial management, and ensures legal and tax compliance for both parties.

What are the different types of invoices?

Different billing situations call for different invoice formats. Choosing the right one keeps things clear and helps you get paid faster.

• Timesheet invoice: Typical among freelancers, consultants, and law firms, this invoice type itemises hours worked and rates charged for hourly billing arrangements.

• Recurring invoice: Ideal for subscriptions, retainers, and ongoing service agreements, this invoice type automates billing at set intervals for a consistent amount.

• Commercial invoice: Generally required for cross-border shipments, this document states the value of goods so customs authorities can assess duties and taxes.

• Debit invoice: This invoice type adds to the amount a customer owes, usually to account for extra work, added costs, or a prior billing shortfall.

• Credit invoice: Sometimes called a credit memo, this lowers what a customer owes and is used for refunds, returned items, or fixing a past invoice.

• Final invoice: Sent when a project wraps up, this invoice type covers whatever balance remains after any earlier partial payments.

• Interim invoice: For lengthy projects, this document splits the total cost into milestone payments so cash keeps flowing as work progresses.

• Pro forma invoice: Issued before work starts or goods ship, this gives clients an up-front cost estimate. It's also common in international trade for customs purposes.

• Standard invoice: The go-to invoice for many transactions, this payment request comes after goods or services are delivered, either immediately or under agreed terms such as net 30.

Many businesses send these as e-invoices—digital, structured documents delivered through accounting or project management platforms—although paper invoices are still used in some cases.

Invoice requirements: Which pieces of information are mandatory to include?

Creating an invoice involves gathering several key pieces of information and organizing them in a structured format. Here are the necessary details that belong in an invoice:

• Seller’s information: This includes the business name, address, contact details, and any other relevant information such as the VAT number or business identification number. For a sole proprietor, this would consist of their name and contact details.

• Buyer’s information: This should include the client’s or customer’s name, address, and contact information. When the buyer is a business, the invoice should list its business name and address.

• Invoice number: Each invoice should have a unique identifier or invoice number. This can be sequential, based on date, or follow any other system that suits the business.

• Date: This should be the date the invoice is issued.

• Products or services: There should be a detailed description of the products or services provided. For goods, this could include the type, quantity, cost per unit, and line total. For services, it might include the service type, the rate (e.g., hourly, daily), the number of hours or days, and the line total.

• Costs: The invoice should clearly list the costs of each item or service, including the unit cost and the total cost for that line item.

• Subtotal: The subtotal is the total cost before any additional charges, discounts, or taxes are applied.

• Discounts (if any): If any discounts have been applied to the transaction, they must be listed.

• Taxes: Any applicable taxes must be calculated and listed. The invoice should indicate the type of tax and the rate.

• Shipping or additional charges (if any): If there are any additional charges, such as shipping or handling fees, they must be included.

• Total amount: This is the final amount due, including all charges, taxes, and discounts.

• Payment terms: The invoice should clearly state the terms of payment, such as the due date and acceptable payment methods.

• Notes (optional): This includes any additional notes or comments from the seller.

Depending on your geographical location and industry, there might be specific legal requirements for what to include on an invoice. In certain industries, businesses might need to include more specialized information, such as an hourly breakdown for billable work in a service business or the weight and dimensions of products in a goods-based business. The type of business and the nature of the transaction can significantly influence when and how an invoice is created and delivered.

Here's a breakdown of how different business situations can affect invoices:

• Service-based businesses: For businesses that offer services, such as consulting and freelancing, it’s common to invoice on completion of the work—a practice sometimes referred to as “invoicing in arrears.” For example, a graphic designer might issue an invoice after finalizing a logo design. In certain cases, such as for ongoing services, it might be appropriate to send periodic invoices (e.g., monthly, quarterly) that state the services provided during a particular period.

• Product-based businesses: Businesses that sell physical goods usually issue an invoice at the point of sale or when an order is confirmed. For instance, a clothing store would send an invoice after a purchase, whereas an e-commerce business would typically send an invoice when the customer’s order is processed.

• Progress billing: For larger projects that span extended periods, such as construction and customized software development, businesses often use progress billing. This means they issue invoices at various project milestones or stages of completion. Progress billing facilitates cash flow and keeps the client informed about the progress and associated costs.

• Recurring billing: For subscription-based services, such as gym memberships and software-as-a-service (SaaS) subscriptions, businesses typically send invoices on a regular cycle (e.g., monthly, quarterly, annually). This type of invoicing reflects the recurring nature of the service.

• Up-front payment: In certain situations, especially when bespoke products are involved or the customer’s credit is uncertain, an up-front payment might be necessary. Here, a business would issue an invoice that details the advance payment required before delivering the goods or performing the services.

• Retainer model: Businesses such as law firms and public relations agencies often operate on a retainer model, where the client pays a regular, predetermined fee. In this case, the company would issue an invoice at a prearranged cadence that shows how that fee has been allocated (e.g., hours worked), along with any additional costs beyond the retainer.

In all these cases, it’s important for businesses to communicate clearly about payment expectations, ensure prompt invoicing, and follow up for payment when appropriate.

How to create an invoice step-by-step

Here's a practical, step-by-step guide you can follow each time you bill a customer

Decide how you'll build the invoice

Figure out your method first, whether that's a premade template, accounting software, an online generator, or a document you build yourself. If you invoice only occasionally, a simple template is fine. If you're billing regularly, software that handles the calculations and tracks payment for you will save time.

Put your business info at the top

Lead with your company name, mailing address, phone number, email, and logo if you have one. This tells the recipient immediately whom they're paying and adds a professional look.

Add the client's details

Include the customer's name (or their company's name), billing address, and, if possible, the specific person or department that handles payments on their end. Getting this right matters; an invoice sent to the wrong contact is an easy way to get paid late.

Give it a unique invoice number

Assign each invoice its own identifying number, ideally in a consistent sequence (e.g., 0001, 0002, and so on). This makes it much easier to keep your books organised and to reference a specific bill later if questions come up.

Note the issue date and the due date

Record the date you're sending the invoice and specify exactly when payment is expected. Instead of just writing "net 30", calculate and list the actual calendar date – it removes any guesswork for the client.

Break down what's being charged

List every product or service separately rather than lump charges together. For each line, note what was provided, the quantity or time involved, the rate, and the resulting total. The more specific your descriptions are, the less likely the client is to question or delay the charge.

Total everything

Add your line items to a subtotal, then apply any taxes, discounts, or extra fees as their own lines. Make the final total due stand out clearly – bold text or a larger font at the bottom works well.

Explain how and when you want to be paid

Clarify which payment methods you accept (e.g., bank transfer, card, cheque, digital payment apps), along with any late payment penalties or early payment incentives you're offering.

Proofread, then send it off

Give the whole document one last check for typos, wrong amounts, or missing details before it goes out. Save it as a PDF so formatting stays intact, and deliver it via whatever method works best for your client – email, a payment portal, or your invoicing platform.

Different ways to create invoices

Businesses generally choose between two approaches to invoicing: automated tools built for the job or manual methods.

What are the best practices for invoice creation?

Creating and managing invoices is a fundamental component of revenue generation and cash flow management. Employing best practices here can result in expedited payments, reduced payment-related queries, and stronger client relationships.

Here are some best practices for businesses:

• Use a professional layout: Your invoice should look professional and be easy for your client to read, reflecting the high quality of your brand and service. Consistency in layout shows professionalism while helping your clients locate key information quickly, which in turn facilitates faster payment. Using an invoice template or specialised software can simplify this process by ensuring every bill you send maintains your professional standard.

• Include all necessary information: Ensure that your invoice contains every important detail, including your business name and address, a description of goods or services provided, and the total amount due. Incorporate your Tax ID as well if it’s required by law.

• Itemise your services or products: Detail each service or product provided, including its associated cost. An itemised invoice eliminates any ambiguity about what you’re billing your client for, reinforcing trust and making disputes less likely.

• Clarify payment terms: Your payment terms should be clear to recipients, including specifics such as the due date and the different payment methods you accept. If you charge penalties for late payments, state this up front.

• Use unique invoice numbers: Ensure that each invoice has its own invoice number. This numbering system simplifies invoice management and can be important in the event of disputes or audits, enabling you to easily track and retrieve the right document.

• Deliver promptly: Send your invoices promptly. The earlier your client receives the invoice, the higher the likelihood they’ll settle the payment early. This can have a positive impact on your cash flow and financial planning.

• Follow up: Be proactive in following up on unpaid invoices. Politely reminding your clients when a payment is due or overdue keeps the transaction on their radar and signals your professionalism. This step (and others) can be automated with a tech-powered solution like Stripe Invoicing, which we’ll discuss in more detail below.

• Keep records: Maintain a comprehensive record of all invoices issued and payments received. These records serve as an excellent reference for tracking payments and following up on overdue invoices, and they’re indispensable for financial management, audits, and tax obligations. Working with a comprehensive payment and billing provider like Stripe can minimise the complexity and workflow associated with maintaining financial records.

• Use digital tools: Use invoicing software or digital platforms. These solutions—including those offered by Stripe—can automate several aspects of the invoicing process, such as creating recurring invoices, sending follow-up reminders, and maintaining digital records. This can save you valuable time and reduce the chance for human error.

• Personalise your invoices: When appropriate, consider adding a personalised note or a simple thank-you for your client. This small personal touch can help build a strong, positive business relationship that lasts beyond the transaction.

• Make it easy to pay: Simplify the payment process to facilitate timely payments. Offering multiple payment methods and enabling online payments can make it more convenient for clients to settle their invoices, which helps you receive payments faster.

How Stripe Invoicing can help

Stripe Invoicing simplifies your AR process—from invoice creation to payment collection. Whether you’re managing one-time or recurring billing, Stripe helps businesses get paid faster and streamline operations:

• Automate AR: Easily create, customise and send professional invoices – no coding required. Stripe automatically tracks invoice status, sends payment reminders and processes refunds, helping you stay on top of your cash flow.

• Accelerate cash flow: Reduce days sales outstanding (DSO) and get paid faster with integrated global payments, automatic reminders and AI-powered dunning tools that help you recover more revenue.

• Enhance the customer experience: Deliver a modern payment experience with support for 25+ languages, 135+ currencies and 100+ payment methods. Invoices are easy to access and pay through a self-serve customer portal.

• Reduce back-office workload: Generate invoices in minutes and reduce time spent on collections through automatic reminders and a Stripe-hosted invoice payment page.

• Integrate with your existing systems: Stripe Invoicing integrates with popular accounting and enterprise resource planning (ERP) software, helping you keep systems in sync and reduce manual data entry.

Learn more about how Stripe can simplify your AR process, or get started today.

FAQs about creating an invoice

Here are answers to some common questions businesses have about creating and sending invoices.