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Master the Art of Customer Invoicing in 2021

Master the Art of Customer Invoicing in 2021 | Dhanguard

Little do we notice, but a simple piece of paper like an invoice is present in all most every slant of our day to day lives.  It can be as menial getting an invoice for purchasing the groceries from your nearby supermarket or can be as complex as getting one for convoluted banking and business account transactions. Nevertheless one should not shy away from understanding the rudiments of an invoice as it can be helpful for setting up or operating an impregnable company or a business organization. So without any further ado, let’s grab the fundamentals of an invoice.

What is an Invoice?

A time-stamped commercial paper that itemizes and documents a transaction of a business between a buyer and a seller is known as an invoice. If goods or services were purchased on credit, the invoice normally spells out the terms of the agreement and lists the various payment options after which the payments are reflected in the business account or any other as well. On the face of the bill, an invoice must claim that it is an invoice. It usually has a unique identifier called an invoice number that can be referenced both internally and externally. In the event of a billing error, an invoice usually includes contact details for the seller or service provider.

The terms of payment to be followed, as well as information about any incentives, early payment details, or financing charges levied for late payments, can be included on the invoice. It also shows the item's unit cost, the total number of units bought, freight, handling, delivery, and tax charges, as well as the total amount owed.

What are the relevant functions of an Invoice?

In order to claim payment, businesses must deliver invoices. An invoice is a legally binding document that demonstrates both parties, acceptance of the quoted price and payment terms. However, there are additional advantages of using invoices which are illustrated below for a better understanding:-

relevant functions of an invoice

The abovementioned advantages are elucidated below:-


An invoice is an important accounting tool. It makes it easier for both the seller and the buyer to keep track of their payments and outstanding balances and avoid any confusion regarding payments.


A correct invoice serves as legal evidence of a price deal between the buyer and seller. It defends the merchant against false lawsuits which can arise in the events of failure of repayments by the other party.


Invoice analysis can assist companies in gaining insight into their consumer’s purchasing habits and identifying trends, common goods, peak purchase periods, and more. This aids in the development of successful marketing campaigns.


All types of invoices must be recorded and maintained in order for the company to disclose its revenue and pay the correct amount of taxes. Regular record keeping of invoices makes the task of tax filing relatively easy as compared to one where it is not properly kept in records.


The opportunity to maintain a legal record of the transaction is the most valuable advantage of an invoice and can make banking and business account keep running smoothly. This allows you to determine where a product was sold, who purchased it, and who sold it.

Different Types of Invoices-

The different types of invoices are enumerated and explained below-

Different types of invoices


Electronic invoicing is a form of electronic billing that is also known as e-invoicing or e invoicing. Trading partners, such as consumers and suppliers, use e-invoicing approaches to present and track transactional documents and ensure that the terms of their trading agreements are followed. Invoices, sales orders, debit and credit cards, payment terms, payment instructions, and remittance slips are examples of these records. Small companies and freelancers are increasingly using electronic invoicing. E-invoices are simpler and easier to make than traditional print invoices, and they help you get paid for your services more quickly.


A regular invoice is provided by a company and sent to a customer. This is the most popular invoice format used by small companies, and it can be customized to suit most industries and billing cycles. The following information about the transaction is included in standard invoices:

  • The name of the company and its contact details
  • Name and contact details for the client
  • A number assigned to an invoice
  • The sum that a customer owes the company for its services


A credit invoice, also known as a credit memo, is provided by a company that needs to offer a discount or refund to a customer, or to correct a previous invoicing mistake. A negative total number will always appear on a credit invoice. For example, if you're sending a client a credit invoice for a 50 Dhs refund, the amount on the credit invoice would be -50 Dhs.


Businesses that charge customers the same amount for their services on a regular basis will benefit from recurring invoices. IT companies that charge their customers the same amount per month for a bundle IT service use recurring invoices. Alternatively, if you're a freelance digital marketer, you might sell monthly social media marketing packages to your clients. Cloud-based invoicing software allows you to automate the process of generating regular invoices and even send them out on the same day each month, so you don't have to.


If a customer fails to pay by the due date specified on the final invoice, a company will submit a past due invoice. As soon as a customer misses a payment deadline, you can give them past due invoices. Many of the service and payment information listed on the final invoice are included on past due invoices, as well as any late fees or interest charges.


A debit invoice, also known as a debit memo, is issued by a company that has to raise the sum owed to it by a customer. When small businesses and freelancers need to make a minor change to an existing bill, debit invoices may be helpful. For example, if you gave a client an invoice based on your projected hours and you ended up working more hours on a project than expected, you might give the client a debit invoice for the extra hours billed. Positive numbers are often written on debit invoices.


A commercial invoice is a document provided by a company for products it sells to consumers all over the world. Commercial invoices provide information about the sale that is required to calculate customs duties for cross-border transactions. A commercial invoice contains the following information:

  • Quantity of shipments
  • Volume / weight
  • Goods' description
  • Total cost
  • Format of packaging


An intermediate invoice is used for billing on large contracts where the customer and the company have agreed to multiple payments. When such milestones in a larger project are completed, a company or freelancer may send interim invoices. Interim invoices assist small companies in managing their cash flow when working on long-term ventures.


When a project is finished, a final invoice is submitted to the client to receive payment. The final invoice is usually more comprehensive than the pro forma or interim invoice, and it usually contains the following information:

  • A detailed list of all the programmes offered
  • The total project expense
  • Number of the invoice
  • Due date for invoices
  • Accepted payment methods


A pro forma invoice is a pre-payment calculation that a company sends to a customer before delivering services. A pro forma invoice gives the client an estimation of the cost of the work that needs to be done. When a project is completed, pro forma invoices can need to be adjusted to accurately represent the hours worked.


An expense report is a form of invoice that an employee submits to their employer in order to be reimbursed for business-related expenses. If you send an employee to a lunch meeting with a client, for example, they will generate an expense report to bill the employer for the lunch, parking, and gas they paid for in advance.

What are the Key Elements of an Invoice?

A good, legally sound invoice should provide all of the details a customer would need to make payments as well as a way to contact them if they have any questions. Let's take a look at the different elements of an invoice.

  1. The inclusion of the term ‘INVOICE”
  2. The Invoice number should be mentioned. This makes it easier to sort out a particular invoice if they are arranged accordingly.
  3. Date on which the services are provided.
  4. Date of sending the invoice to the other party.
  5. The name and contact details of the seller/ company should also be mentioned precisely.
  6. The name and contact details of the buyer should also be mentioned precisely.
  7. The terms and conditions of the invoice.
  8. A clear description of the services or products provided to the buyer. It is utmost essential that this section should be clearly mentioned without any errors as to avoid any problems in the future.
  9. The cost of each unit of the product or services provided should also be mentioned.
  10. The percentage of tax levied of the products or services should also be mentioned.
  11. The total amount of payment which is owed y the buyer along with the currency should also be specified.


 In the end we can conclude with the fact that invoices are those types of documents which one should make and maintain with precision. Doing this will not only ensure occurrence of smooth business transactions but also trouble free business operations for the company, as the company will be safeguarded from any kind of hindrances which can arise due to lack of proper management of invoices. Moreover proper maintenance of invoices will supplement the data of the company by which all the logistics regarding demand, supply and sales can be bifurcated and tackled accordingly to increase revenue in the future.



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