Billing is an essential part of any business, as it involves the process of invoicing customers or clients for goods or services rendered. Proper billing ensures that a business is paid accurately and on time, which is crucial for maintaining financial stability and growth. In this ultimate guide to billing, we’ll cover everything you need to know about the billing process.

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Types of BIR Billing

There are two types of BIR Billing: the official receipt and the sales invoice.

1. Official Receipt – An official receipt is issued for every sale of goods or services, regardless of the amount. It should contain the following information:

– Name, address, and TIN of the vendor

– Date of the transaction

– Serial number of the OR

– Name, address, and TIN of the client

– Description of the total goods or services sold

– Amount of the transaction

– Signature of the vendor 

2. Sales Invoice – A sales invoice is issued for every sale of goods or services worth more than Php 1,000. It should contain the same information as the official receipt, plus the following:

– Total quantity of the goods or services sold

– Unit cost of the goods or services sold

– Total amount of the transaction

Billing procedure

Step 1: Establishing Billing Procedures

The first step in successful billing is to establish billing procedures. This includes setting up a billing system and outlining the steps involved in the billing process. It’s important to make sure that all employees who are involved in billing are aware of the procedures and follow them consistently.

Step 2: Creating Invoices

Creating invoices is the next step in the billing process. Invoices should be clear, accurate, and professional-looking. They should include the following information:

  • Business name and contact information
  • Customer name and contact information
  • Description of goods or services provided
  • Total quantity and cost of goods or services provided
  • Date of the invoice
  • Payment terms and due date
  • Any applicable taxes or fees

It’s important to double-check all invoice details before sending them to customers to ensure accuracy.

Step 3: Sending Invoices

Once invoices have been created, they should be sent to customers in a timely manner. This can be done through various methods, such as email, postal mail, or electronic billing systems. It’s important to follow up with customers to ensure that they have received their invoices and to answer any questions they may have.

Step 4: Tracking Payments

Tracking payments is an essential part of the billing process. This includes keeping track of which invoices have been paid and which are outstanding. It’s important to follow up with customers who have not paid their invoices by the due date to ensure that payment is received.

Step 5: Handling Late Payments

Late payments are a common issue in the billing process. It’s important to have procedures in place for handling late payments, such as charging late fees or sending payment reminders. It’s also important to maintain good communication with customers who are experiencing financial difficulties, as this can help to avoid payment issues.

Step 6: Maintaining Accurate Records

Maintaining accurate records is important for both legal and financial reasons. This includes keeping copies of all invoices and payments received, as well as maintaining accurate financial records. Accurate records can help to ensure that taxes are filed correctly and that the business is financially stable.

How to Issue BIR Billing

To issue a BIR Billing, follow these steps:

1. Fill out the official receipt or sales invoice with the necessary information.

2. Print the BIR Billing using your BIR-approved printer.

3. Sign the BIR Billing or have an authorized representative sign it.

4. Give the original copy to the buyer and keep a duplicate copy for your records.

5. Record the transaction in your books of accounts.

BIR Billing Requirements

In order to issue a BIR Billing, you need to comply with the following requirements:

1. BIR Registration – You need to be registered with the BIR and have a Tax Identification Number (TIN) in order to issue a BIR Billing.

2. Sales Invoice – A sales invoice is a document that details the items sold, their prices, and other relevant information. It is required by the BIR for every sale made by a business or a freelancer.

3. Printer – You need to have a BIR-approved printer that can print BIR Billing. The printer should also have a serial number and a seal from the BIR.

4. Books of Accounts – You need to have books of accounts where you can record all your sales transactions, including the BIR Billing.

Common Mistakes to Avoid in BIR billing

Businesses should be careful when issuing official receipts or sales invoices. Below mentioned are some repeated mistakes to avoid:

  • Failing to register with the BIR
  • Using unapproved invoicing or receipting software
  • Failing to include all necessary details on the receipt or invoice
  • Failing to keep copies of all official receipts or sales invoices issued
  • Failing to file and on-time tax payment 


In conclusion, proper billing procedures are essential for any business. By following the steps outlined in this ultimate guide to billing, businesses can ensure that they are paid accurately and on time. Remember to establish billing procedures, create clear and accurate invoices, send invoices in a timely manner, track payments, handle late payments, and maintain accurate records. By following these steps, businesses can maintain financial stability and growth.

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