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What is a proforma invoice

invoice24 Team
7 June 2026

Learn what a proforma invoice is, when to use one, and how it differs from quotes, estimates, and commercial invoices. This guide covers tax, payment terms, legal status, common mistakes, and how invoice24, a free invoice app, helps freelancers and small businesses create professional proforma invoices quickly and easily online.

What is a proforma invoice?

A proforma invoice is a preliminary invoice sent to a customer before goods are delivered or services are completed. It sets out what the seller expects to provide, how much it is expected to cost, and the key commercial details of the proposed transaction. Unlike a final invoice, a proforma invoice is not normally a request for immediate payment and is not usually recorded as an official sales invoice in the seller’s accounts. Instead, it acts as a clear estimate, quotation, or declaration of intent so both parties can review the details before the sale is finalised.

Businesses use proforma invoices in many situations. A supplier may send one to confirm prices before starting work. An exporter may create one so goods can pass through customs. A freelancer may issue one so a client can approve the project cost before a deposit or purchase order is raised. A retailer may use one when the customer needs an internal approval before buying. In every case, the purpose is similar: to give the buyer a structured, professional document showing the expected goods, services, prices, taxes, delivery information, and terms.

For small businesses, a proforma invoice is especially useful because it reduces confusion before money changes hands. It gives customers confidence that they understand the cost. It also helps the seller avoid disputes by putting the proposed details in writing. With a free invoice app like invoice24, creating a professional proforma invoice is simple because the same core information used for quotes, invoices, estimates, and customer records can be organised quickly into a clean document.

Proforma invoice meaning in simple terms

The word “proforma” means “for form” or “as a matter of form.” In business, a proforma invoice is essentially an invoice-style document prepared before the real invoice. It looks similar to a standard invoice, but its legal and accounting purpose is different. It shows what an invoice would look like if the transaction goes ahead, but it does not usually confirm that a sale has already happened.

Think of it as a detailed preview of a future invoice. It tells the buyer, “This is what we plan to supply, and this is what the cost will be if you proceed.” It can include item descriptions, quantities, prices, discounts, tax details, shipping charges, bank details, payment instructions, delivery dates, and terms. The buyer can then accept, request changes, arrange payment, or use the document for internal purchasing approval.

A proforma invoice can also be used when the seller needs payment in advance. For example, a business might send a proforma invoice for a custom order and ask the customer to pay before production begins. Once the customer pays and the goods or services are supplied, the business can issue a final invoice or receipt according to its normal accounting process.

Is a proforma invoice the same as an invoice?

No, a proforma invoice is not the same as a standard invoice. A standard invoice is issued after a sale has been agreed or completed and is normally used as an official request for payment. It is an accounting document that records revenue, tax, and money owed. A proforma invoice comes earlier in the process. It is issued before the final sale is confirmed, before goods are shipped, or before services are completed.

The difference matters because businesses should not treat a proforma invoice in the same way as a final invoice. A proforma invoice usually should not be entered into sales records as completed income. It does not usually create the same tax point as a final tax invoice, and it should be clearly labelled as “Proforma Invoice” so the customer understands that it is preliminary.

However, a proforma invoice can still be important. Customers may rely on it to approve a purchase, arrange payment, open a letter of credit, or provide customs authorities with expected shipment values. Although it is not the final invoice, it should still be accurate, professional, and easy to understand.

What is a proforma invoice used for?

A proforma invoice is used to communicate the expected details of a transaction before it becomes final. It gives the buyer a clear breakdown of the proposed sale and gives the seller a written record of what has been offered. This makes it useful across a wide range of industries, including retail, wholesale, freelancing, consulting, manufacturing, construction, import and export, and online services.

One common use is to provide a customer with a formal price confirmation. A simple verbal quote or email may be enough for small jobs, but many customers prefer an invoice-style document that shows the full cost. A proforma invoice can include all the details a buyer needs to make a decision, including taxes, shipping, discounts, payment terms, and validity dates.

Another common use is advance payment. Some businesses do not want to issue a final invoice until payment is received or until goods are ready to ship. A proforma invoice gives the customer the information needed to pay while making it clear that the document is not the final invoice.

Proforma invoices are also widely used in international trade. When goods are being exported, customs authorities, freight forwarders, importers, and banks may need details about the shipment before the final commercial invoice is available. A proforma invoice can provide the expected value, quantity, origin, destination, and description of goods.

When should you send a proforma invoice?

You should send a proforma invoice when the customer needs a detailed invoice-style document before the final invoice is issued. This usually happens before the sale is complete, before goods are delivered, or before services are fully provided. It is helpful when the buyer needs to approve the price, arrange payment, confirm order details, or provide documentation to another party.

For example, you may send a proforma invoice after a customer asks for a quote but before they officially place an order. You may send one after agreeing the scope of a project but before collecting a deposit. You may also send one before shipping goods internationally, especially if customs or freight documentation is required.

A proforma invoice can also be useful when prices are subject to confirmation. If shipping costs, taxes, or quantities may change, the proforma invoice can show the current expected figures while making clear that the final invoice may be adjusted. This prevents the customer from being surprised later and gives both parties a chance to correct details before the official invoice is created.

What should a proforma invoice include?

A good proforma invoice should be clear, complete, and professional. It should contain enough information for the customer to understand the proposed sale and take the next step. While the exact layout can vary, most proforma invoices include the seller’s details, buyer’s details, document number, date, item descriptions, quantities, prices, taxes, total amount, payment terms, and notes.

The document should clearly say “Proforma Invoice” at the top. This avoids confusion with a final invoice and helps the customer understand that it is a preliminary document. It should also include your business name, address, contact details, and any relevant business registration or tax information. The customer’s name, company, billing address, and shipping address should also be shown where applicable.

Each product or service should be listed on a separate line with a description, quantity, unit price, discount if any, tax rate if relevant, and line total. The invoice should then show subtotals, taxes, shipping costs, and the final expected total. If the customer needs to pay in advance, you can include payment instructions, accepted payment methods, bank details, and a due date.

It is also helpful to include terms and conditions. These might cover how long the proforma invoice is valid, whether prices may change, expected delivery dates, refund conditions, deposit requirements, or any assumptions behind the quote. With invoice24, you can create documents that include these important details in a consistent format, helping your business look organised and reliable.

Proforma invoice example structure

A typical proforma invoice starts with your business details and the customer’s details. It then shows a proforma invoice number and issue date. Next comes a table of products or services, followed by totals and payment information. At the bottom, there may be notes, terms, delivery details, or a message thanking the customer.

For example, a web designer might create a proforma invoice for a new website project. The document could include line items for website design, content setup, contact form integration, search engine optimisation basics, hosting setup, and support. It may show a subtotal, any applicable tax, a deposit amount, and the remaining balance due after completion.

A wholesaler might create a proforma invoice for 500 units of a product, including unit price, total product cost, packaging, freight, insurance, and estimated delivery date. The buyer can then approve the order, arrange payment, or use the document to support import paperwork.

A consultant might send a proforma invoice before starting a monthly retainer. The document could show the agreed monthly fee, the service period, payment terms, and what is included. Once the customer accepts and the service period begins, the consultant can issue a final invoice according to the agreed billing schedule.

Proforma invoice vs quote

A quote and a proforma invoice are similar, but they are not always used in the same way. A quote is usually a price offer. It tells the customer how much a product or service is expected to cost. A proforma invoice is more formal and usually looks closer to a real invoice. It often includes invoice-style numbering, itemised totals, tax information, shipping details, and payment instructions.

Many businesses start with a quote and then issue a proforma invoice once the customer is ready to proceed. For example, a customer may ask for a rough price for a service. You send a quote. After the customer agrees, you send a proforma invoice requesting a deposit or confirming the final order details. Once the work is complete or the goods are supplied, you send the final invoice.

In practice, some businesses use quotes, estimates, and proforma invoices interchangeably, but it is better to keep them distinct. A quote is usually about price approval. A proforma invoice is usually about confirming invoice-style details before the official invoice. Using the right document at the right time makes your process clearer and more professional.

Proforma invoice vs estimate

An estimate is usually less fixed than a quote or a proforma invoice. It gives the customer an approximate idea of cost, often when the final amount is uncertain. For example, a builder may provide an estimate before knowing the exact materials needed, or a mechanic may estimate repair costs before inspecting all parts of a vehicle.

A proforma invoice is generally more specific. It lists the expected goods or services and shows a more detailed total. While the final invoice can still differ if circumstances change, a proforma invoice usually suggests that the seller has a clearer idea of what will be supplied and what it will cost.

If you are unsure about the final price, an estimate may be the better first document. Once the details become clearer, you can create a proforma invoice. invoice24 can help you manage this process by allowing you to create professional invoice-related documents quickly, so customers receive the right information at each stage.

Proforma invoice vs commercial invoice

A commercial invoice is a final document used in actual sales, especially for international shipments. It usually confirms the goods sold, their value, and the terms of sale. Customs authorities may use it to assess duties and taxes. A proforma invoice, by contrast, is preliminary. It shows expected details before the transaction is final or before the commercial invoice is issued.

In export situations, the proforma invoice may be used at the beginning of the transaction. The buyer may use it to apply for import permits, arrange finance, or confirm order details. The seller may use it to help organise shipping or obtain approval. Once the goods are actually shipped or sold, the commercial invoice is created as the final record.

The two documents can contain similar information, but their timing and purpose are different. The proforma invoice says what is expected. The commercial invoice says what has actually been sold and shipped. This is why it is important to label the document correctly.

Is a proforma invoice legally binding?

A proforma invoice is not usually legally binding in the same way as a signed contract or final invoice. It is generally considered a preliminary document. However, it can still form part of the communication between buyer and seller, and it may become relevant if there is a dispute about what was offered or agreed.

Whether a proforma invoice creates obligations depends on the wording, the surrounding communications, the actions of both parties, and the law that applies to the transaction. If the buyer accepts the proforma invoice, pays a deposit, or confirms an order based on it, the document may become part of the broader agreement. For this reason, it should be accurate and carefully written.

To avoid confusion, you should use clear wording. State that the document is a proforma invoice and not a final tax invoice. Include validity dates, payment terms, and any conditions. If prices may change, say so. If delivery depends on stock availability, say so. Clear terms protect both you and your customer.

Can a customer pay a proforma invoice?

Yes, a customer can pay based on a proforma invoice if the seller requests payment. This is common when a business requires payment before starting work, ordering materials, reserving stock, or shipping goods. The proforma invoice gives the customer the amount and payment details needed to make the payment.

However, the seller should still follow the correct process after payment. Depending on the business, location, and tax rules, the seller may need to issue a final invoice, tax invoice, receipt, or payment confirmation. The proforma invoice itself is usually not the final accounting document.

For example, a custom furniture maker may send a proforma invoice requesting a 50% deposit. The customer pays the deposit. The business then begins production. When the furniture is delivered, the business issues the final invoice showing the full price, deposit paid, and remaining balance. This creates a clear record from initial approval through to final payment.

Do proforma invoices need invoice numbers?

A proforma invoice should usually have its own reference number, but it should not be confused with your official invoice numbering sequence. Many businesses use a separate prefix, such as “PI-001,” to show that the document is a proforma invoice. This makes it easier to track and prevents it from being mistaken for a final invoice.

Using a separate numbering system is good practice because it keeps your records organised. If a customer calls with a question, they can quote the proforma invoice number. If the transaction later becomes a sale, you can create a final invoice with a proper invoice number while still being able to refer back to the original proforma document.

invoice24 makes this easier by helping you create professional documents with clear details and organised records. Whether you are preparing a proforma invoice, a final invoice, or another business document, consistent numbering and formatting can save time and reduce errors.

Does a proforma invoice include tax?

A proforma invoice can include tax information if it is helpful or required for the transaction. Many sellers show the expected tax rate and total so the customer understands the full amount they may need to pay. This is especially useful for business customers who need to approve budgets or compare supplier costs.

However, because a proforma invoice is not usually the final tax invoice, it should be clearly labelled to avoid confusion. The final invoice should show the official tax details when the sale is completed or when tax rules require it. If you are unsure about how tax applies to your business, it is sensible to check the rules in your location or ask a qualified adviser.

For practical purposes, including estimated tax on a proforma invoice often improves transparency. Customers want to know the total cost, not just the pre-tax amount. A professional invoice app can calculate totals, apply tax rates, and present the figures clearly.

Why businesses use proforma invoices

Businesses use proforma invoices because they make transactions clearer before they become final. They help both sides understand what is being supplied, what it will cost, and what needs to happen next. This reduces uncertainty and helps prevent disagreements.

For sellers, a proforma invoice can improve cash flow by supporting advance payments. It can also help confirm customer commitment before time or money is spent. For buyers, it provides a formal document that can be reviewed, approved, and processed internally. This is especially important in organisations where purchases need manager approval or finance team checks.

Proforma invoices also create a more professional customer experience. Instead of sending informal payment requests or long email threads, you can send a polished document with all the information in one place. This shows that your business is organised and serious about its work.

Benefits of creating proforma invoices with invoice24

invoice24 is designed to make invoice creation simple, fast, and professional. When you need a proforma invoice, you should not have to struggle with spreadsheets, manual formatting, or copied templates. A free invoice app can help you create a clean document quickly and make sure the important details are included.

With invoice24, you can create invoice-style documents for your customers, add business and client details, list products or services, calculate totals, include taxes or discounts, and present everything in a professional layout. This is useful whether you are a freelancer sending a deposit request, a small business confirming an order, or a supplier preparing documents for a customer.

Another major benefit is consistency. When all your invoices and related documents follow a professional format, customers know what to expect. Your brand looks more trustworthy, your records are easier to manage, and you spend less time fixing mistakes. invoice24 gives you the features needed to create practical business documents without making the process complicated.

How to create a proforma invoice

Creating a proforma invoice is straightforward when you follow a clear process. Start by adding your business details, including your business name, address, email, phone number, and any relevant tax or registration information. Then add the customer’s details, including their name, company name, billing address, and delivery address if needed.

Next, add the document information. Label it clearly as a proforma invoice and give it a unique proforma reference number. Add the issue date and, if relevant, an expiry date. The expiry date is useful when prices are only valid for a limited time or when stock availability may change.

Then list the goods or services. Use clear descriptions so the customer understands exactly what is included. Add quantities, unit prices, discounts, taxes, shipping charges, and totals. If there are optional extras, separate them clearly. If the final price may depend on conditions, explain that in the notes.

Finally, add payment terms and any other conditions. State whether payment is required in full, whether a deposit is needed, when payment is due, and what payment methods are accepted. Include delivery details, project timelines, or special instructions. Review the document carefully before sending it to the customer.

Common mistakes to avoid

One common mistake is failing to label the document clearly. If a proforma invoice looks exactly like a final invoice and is not marked properly, the customer may treat it as an official payment demand or accounting document. Always use the words “Proforma Invoice” clearly.

Another mistake is leaving out important details. A proforma invoice should not be vague. If the customer cannot tell what is included, when the price is valid, or how to pay, the document may create more confusion instead of less. Include item descriptions, totals, terms, and contact details.

Some businesses also forget to update the final invoice after changes. If the customer changes the quantity, delivery method, or service scope, the final invoice should reflect the actual transaction. The proforma invoice is only the expected version. The final invoice should show what was actually sold or supplied.

A further mistake is using the same numbering sequence for proforma invoices and final invoices. This can create accounting confusion. Use a separate proforma numbering system so your official invoices remain clean and compliant.

Proforma invoices for freelancers

Freelancers often use proforma invoices when they want payment before starting work. This is common for design, writing, consulting, marketing, development, photography, coaching, and other service-based work. The freelancer can set out the project scope, price, deposit amount, and payment details in a professional format.

For example, a freelance graphic designer might send a proforma invoice for a branding package. The document could show the logo design fee, brand guidelines, social media graphics, expected timeline, deposit required, and remaining balance. The client can review and pay the deposit before the work begins.

This helps freelancers avoid unpaid work and unclear expectations. It also reassures clients because they can see exactly what they are paying for. Using invoice24 can make this process faster and more professional, especially for freelancers who need to create documents regularly but do not want complicated accounting software.

Proforma invoices for small businesses

Small businesses can use proforma invoices to confirm orders, request deposits, reserve stock, and provide customers with clear payment information. This is useful for businesses selling products, offering services, or managing custom orders. A proforma invoice can act as a bridge between a quote and a final invoice.

For example, a small catering company may send a proforma invoice before an event. It can include the menu, number of guests, service charge, delivery fee, deposit, and payment deadline. Once the event is completed, the company can issue the final invoice with any adjustments.

A small retailer may use a proforma invoice for a bulk order. The customer can confirm the order and pay before the goods are packed and shipped. This protects the seller from preparing a large order without commitment and gives the buyer a clear record of what has been agreed.

Proforma invoices for international trade

Proforma invoices are especially important in international trade because they provide shipment information before the final commercial invoice is issued. Importers, exporters, freight forwarders, banks, and customs agents may need early details about the goods, value, origin, and destination.

An export proforma invoice may include product descriptions, quantities, unit values, total value, currency, country of origin, shipping method, estimated freight cost, insurance, packaging details, delivery terms, and buyer and seller information. It may also be used by the buyer to apply for import licences, arrange finance, or confirm duties and taxes.

Accuracy is very important when using proforma invoices for international shipments. Product descriptions should be specific, values should be realistic, and shipping details should be clear. If the final shipment differs from the proforma invoice, the commercial invoice and shipping documents should be updated accordingly.

Can a proforma invoice be cancelled?

Yes, a proforma invoice can usually be cancelled or revised because it is a preliminary document. If the customer decides not to proceed, the seller can mark it as cancelled. If the customer changes the order, the seller can create a revised proforma invoice with updated quantities, prices, or terms.

This flexibility is one of the reasons proforma invoices are useful. They allow both parties to review and adjust the transaction before the final invoice is issued. However, if the customer has already paid a deposit or accepted terms, cancellation may depend on the agreement between the parties.

To avoid confusion, keep records of cancelled or revised proforma invoices. If you send an updated version, make it clear which version is current. You can use version numbers, dates, or notes to show that an earlier document has been replaced.

Best practices for proforma invoices

The best proforma invoices are simple, accurate, and easy to act on. They should give the customer all the information needed without overwhelming them. Use plain language, clear item descriptions, and organised totals. Avoid hidden charges and explain any assumptions.

Always include an expiry date when prices may change. This protects your business if costs increase, stock runs out, or exchange rates move. It also encourages the customer to make a decision within a reasonable time.

Use separate numbering for proforma invoices and final invoices. Keep the document clearly labelled. Make sure your final invoice matches the actual sale. If there are changes between the proforma invoice and the final invoice, explain them clearly to the customer.

Send the proforma invoice in a format that is easy to read and save. A professional layout helps customers process the document quickly. Using invoice24 can help you create consistent documents that look clean and include the details customers expect.

How invoice24 helps with proforma invoices

invoice24 is a free invoice app built to help businesses create the documents they need without unnecessary complexity. A proforma invoice should be quick to prepare, easy to understand, and professional enough to send to any customer. invoice24 supports that process by giving you the tools to create polished invoice documents with the key information included.

You can use invoice24 to add your business details, enter customer information, list products or services, calculate amounts, include taxes and discounts, and prepare a document that is ready to send. This helps you avoid manual calculations, messy formatting, and repeated typing.

For growing businesses, speed matters. The less time you spend creating documents, the more time you can spend serving customers. invoice24 helps simplify everyday invoicing tasks so you can create proforma invoices, final invoices, and related documents with confidence.

Final thoughts on proforma invoices

A proforma invoice is a practical business document used before a final invoice. It shows the expected details of a sale, including goods or services, prices, taxes, delivery information, and payment terms. It is not usually the same as a final invoice, but it plays an important role in helping buyers and sellers agree on the details before the transaction is completed.

Whether you are a freelancer requesting a deposit, a small business confirming an order, or an exporter preparing shipment paperwork, a proforma invoice can make your process clearer and more professional. It reduces misunderstandings, supports advance payments, and gives customers a structured document they can review and approve.

Using invoice24 makes creating proforma invoices easier. Instead of starting from scratch or editing old templates, you can use a free invoice app designed for professional invoice creation. With the right details, clear terms, and a polished layout, your proforma invoice can help customers say yes faster and help your business stay organised from the first quote to the final invoice.