New BIR Invoice Rules for 2026: How Businesses Should Handle Creditable Withholding Tax

By Rosebelle Pangilinan | Tax Manager, DV Consulting Inc.  29 October 2026 Issuing an invoice may seem like a routine part of running a business, but even small changes in tax documentation can affect how transactions are recorded and payments are processed.

With the release of Revenue Memorandum Circular (RMC) No. 112-2026 on October 22, 2026, the Bureau of Internal Revenue (BIR) provided further guidance on presenting Creditable Withholding Tax (CWT) in sales invoices, in line with Revenue Regulations No. 6-2026.

For Philippine businesses, this is an opportunity to review existing invoicing practices and make sure that both sellers and customers have a clear understanding of how withholding taxes should be reflected in their transactions.

Understanding the Change

When businesses sell goods or provide services to customers required to withhold tax, the amount they actually receive may be lower than the total invoice amount.

This difference does not necessarily mean the business earned less. A portion of the payment may have been withheld by the customer and remitted to the BIR as an advance payment of the seller's income tax.

Under the updated invoicing rules, the applicable CWT must be shown separately on the sales invoice.

This makes it easier for both parties to identify the total transaction amount, the tax withheld, and the remaining payment due.

However, not every sale requires CWT. The requirement depends on whether the transaction falls under applicable withholding tax regulations.

What If Your Business Still Has Unused Invoices?

Business owners do not necessarily need to replace their existing invoice stocks immediately.

The BIR allows unused manual and loose-leaf invoices covered by the transitional rules to remain in use until fully consumed.

For transactions where withholding tax applies, businesses must clearly indicate the CWT description and amount on the invoice. This may be done through stamping, printing, or legible handwritten notation.

Businesses ordering new invoice booklets should ensure that the required withholding tax information is already incorporated into the updated invoice format.

A Practical Guide to Adjusting Your Invoicing Process

Rather than waiting until an invoice causes a payment concern, businesses can take the following steps to improve their processes.

1. Identify Which Customers Are Required to Withhold Tax

Review transactions with customers such as corporations, government agencies, and other withholding agents.

Confirm whether the specific payment is subject to withholding tax. The type of customer alone does not determine whether CWT applies.

2. Confirm the Tax Details Before Preparing the Invoice

Coordinate with the customer regarding the applicable withholding tax rate, tax base, and expected amount to be withheld.

This reduces the possibility of discrepancies between the invoice amount and the payment eventually received.

3. Present the Withholding Tax Clearly

When CWT applies, the invoice should show the amount being withheld separately from the sale itself.

For example, assuming a non-VAT service transaction subject to a 2% withholding tax:

Invoice details	Amount
Service Fee	₱15,000.00
Less: Creditable Withholding Tax (2%)	₱300.00
Amount Payable	₱14,700.00

The example is for illustration only. Actual withholding tax rates and tax bases vary depending on the transaction.

Remember that the ₱300 withheld is not a discount given to the customer. It represents tax withheld from the payment, which may be credited against the seller's income tax liability when properly supported.

4. Check Whether Your Invoicing System Needs Updating

Businesses using POS systems, computerized accounting systems, or electronic invoicing platforms should coordinate with their accounting personnel or software providers.

Confirm that the system can display CWT separately and preserve the correct sales and tax information.

Under the circular's transitional guidelines, covered systems have different modification deadlines, including December 31, 2026, and March 31, 2027, depending on the system classification.

5. Keep Your Invoice and Withholding Tax Records Consistent

Proper documentation does not end when an invoice is issued.

Businesses should regularly compare invoices, customer payments, and withholding tax certificates to ensure that recorded transactions match supporting documents.

If a withholding tax adjustment becomes necessary after invoice issuance, follow the BIR's prescribed correction procedures rather than simply altering the original invoice.

What This Means for Small and Growing Businesses

For micro, small, and medium enterprises (MSMEs), adapting to new tax documentation requirements can sometimes feel like an additional administrative responsibility.

However, clear invoicing practices can also help businesses avoid payment misunderstandings, maintain accurate accounting records, and prepare more reliable tax reports.

The important thing is not simply to add another line to an invoice. Businesses should understand why withholding tax appears there and how it affects their financial records.

Taking time to review invoice templates, train employees, and communicate with customers can make compliance easier as the new rules take effect.

Moving Forward with Better Tax Compliance

Changes in BIR requirements are a reminder that proper accounting involves more than filing returns on time. It also means maintaining accurate records from the moment a transaction takes place.

By preparing early and improving internal invoicing procedures, businesses can reduce avoidable errors and keep their day-to-day financial operations organized.

At DV Consulting Inc., we believe that understanding tax requirements should not be complicated. Through our bookkeeping, tax filing, and full cycle accounting services, we help businesses maintain proper financial records and navigate Philippine tax compliance requirements.

Better records lead to better decisions—and better business starts with proper compliance.

Reference: Bureau of Internal Revenue, Revenue Memorandum Circular No. 112-2026, issued October 22, 2026, clarifying Revenue Regulations No. 6-2026.

This article is provided for general information. Businesses should consult the official BIR issuance and their tax advisers regarding requirements applicable to their specific transactions.