National Internal Revenue Code (NIRC)
Last Updated: June 13, 2026
tips_and_updatesDefinition
The National Internal Revenue Code (NIRC) is the comprehensive tax law of the Philippines, officially known as Republic Act No. 8424, that establishes the legal framework for all national taxes including income tax, value-added tax, excise tax, and other internal revenue taxes, along with their administration and enforcement procedures.
The NIRC serves as the foundation of the Philippine tax system, originally enacted as Commonwealth Act No. 466 in 1939 and substantially revised as Republic Act No. 8424 in 1997. This law defines what constitutes taxable income, sets tax rates and brackets, establishes filing requirements, and grants the Bureau of Internal Revenue (BIR) its powers to collect taxes and enforce compliance. The code is divided into several titles covering different aspects of taxation: Title I deals with income tax, Title II covers estate and donor's taxes, Title III addresses excise taxes, Title IV governs value-added tax, and subsequent titles cover administrative provisions, penalties, and enforcement procedures. The NIRC has been amended multiple times through various laws, including the Tax Reform for Acceleration and Inclusion (TRAIN) Act and CREATE Act, which updated tax rates and introduced new provisions.
Detailed Explanation
Overview
The National Internal Revenue Code (NIRC), officially enacted as Republic Act No. 8424 on December 11, 1997, is the primary and most comprehensive tax statute of the Philippines. It consolidates, codifies, and systematizes all laws relating to national internal revenue taxes, replacing the previous Internal Revenue Code of 1977 (PD 1158). The NIRC serves as the constitutional and legal foundation for all tax obligations, exemptions, and enforcement mechanisms administered by the Bureau of Internal Revenue (BIR).
Structure and Scope
The NIRC is organized into six books:
Book One: Taxes on Income covers individual and corporate income taxation, including provisions on gross income, deductions, capital gains, and special income regimes (NIRC §§21–59).
Book Two: Taxes on Transactions addresses value-added tax (VAT), percentage tax, and documentary stamp tax (NIRC §§100–199).
Book Three: Taxes on Specific Goods establishes excise taxes on alcohol, tobacco, petroleum products, and other specified commodities (NIRC §§200–299).
Book Four: Taxes on Privileges imposes taxes on business permits, professional licenses, and franchise rights (NIRC §§300–399).
Book Five: Miscellaneous Taxes includes estate tax, donor's tax, and other specialized levies (NIRC §§400–499).
Book Six: Administrative Provisions prescribes assessment procedures, collection remedies, penalties, and taxpayer rights (NIRC §§500–599).
Key Amendments and Modernizations
The NIRC has been substantially amended by landmark legislation:
Tax Reform for Acceleration and Inclusion (TRAIN) Law, RA 10963 (2017) reformed individual income tax brackets, expanded VAT base, and increased excise taxes on fuel and automobiles, effective January 1, 2018.
Corporate Recovery and Tax Incentives for Enterprises (CREATE) Law, RA 11534 (2021) reduced corporate income tax from 30% to 25% (phased to 20% by 2023), reformed the Fiscal Incentives Review Board (FIRB), and streamlined tax incentive administration.
Corporate Minimum Income Tax (CMIT), RA 11534 imposes a 1% tax on gross income for corporations with net income below the CMIT threshold, effective July 1, 2020.
Ease of Doing Business and Efficient Government Service Delivery Act of 2018 (RA 11032) introduced the Simplified Income Tax System (SITS) for self-employed individuals and professionals with gross receipts not exceeding ₱250,000 annually.
Core Tax Types Under NIRC
Income Tax (NIRC §21 et seq.) is imposed on individuals and corporations on their taxable income. Individual income tax rates range from 5% to 35% depending on income bracket (as amended by TRAIN). Corporate income tax is 25% (or 20% under CREATE phase-in), with special rates for certain entities.
Value-Added Tax (NIRC §106 et seq.) is a 12% consumption tax on the sale of goods and services, with exemptions for basic necessities, healthcare, and education. VAT is collected at each stage of production and distribution, with input tax credits available to registered VAT taxpayers.
Excise Tax (NIRC §200 et seq.) is imposed on specific goods including alcohol, tobacco, petroleum products, and automobiles. Rates vary by product category and are adjusted periodically by Congress.
Estate Tax (NIRC §84 et seq.) is a flat 6% tax on the net estate of a deceased person, imposed on the estate itself rather than on heirs (NIRC §84, as amended by CMEPA 2024).
Donor's Tax (NIRC §99 et seq.) is a flat 6% tax on the net value of property transferred by gift during the donor's lifetime (NIRC §99, as amended by CMEPA 2024).
Administration and Enforcement
The BIR, under the Department of Finance, administers and enforces the NIRC through its national office and 17 regional offices. The BIR issues Revenue Regulations (RRs), Revenue Memorandum Circulars (RMCs), and BIR Rulings to clarify NIRC provisions and provide guidance to taxpayers.
Key enforcement mechanisms include:
Assessment (NIRC §201 et seq.): The BIR may assess deficiency taxes within three years of filing (or ten years if fraud is involved).
Collection (NIRC §206 et seq.): The BIR may collect taxes through distraint of personal property, levy on real property, or garnishment of bank deposits.
Penalties (NIRC §248 et seq.): Taxpayers face surcharges (25% of deficiency), interest (12% per annum), and criminal penalties for fraud or willful evasion.
Taxpayer Rights (NIRC §228 et seq.): The NIRC guarantees the right to due process, administrative appeal, and judicial review before the Court of Tax Appeals.
Recent Developments (2024)
The Corporate Minimum Income Tax and Estate/Donor's Tax Amendments (CMEPA) of 2024 further refined NIRC provisions, including the reduction of estate and donor's tax rates to a flat 6% and clarifications on CMIT applicability to certain industries.
Why it Matters
The NIRC is the legal foundation of every Filipino taxpayer's obligations. Whether you are an employee, self-employed, business owner, or investor, your tax liability, deductions, and compliance deadlines are determined by NIRC provisions. Understanding the NIRC helps you claim legitimate deductions, avoid penalties, and exercise your taxpayer rights before the BIR and courts.
Examples
01Salaried employee earning ₱600,000 annually
02Self-employed professional with ₱180,000 gross receipts
03Corporation with ₱5,000,000 net income
04Estate of deceased with ₱10,000,000 net estate
05Gift of ₱500,000 property
Common Misconceptions
Misconception
The NIRC applies only to large corporations and wealthy individuals.
Reality
The NIRC applies to all Filipinos and foreign nationals earning Philippine-source income, including employees, self-employed persons, and micro-entrepreneurs. Even those below the taxable threshold must file returns if required by the BIR (NIRC §51).
Misconception
Once you pay income tax, you are exempt from other NIRC taxes like VAT and excise tax.
Reality
Income tax, VAT, excise tax, and other NIRC taxes are independent levies. A business pays income tax on net profit AND VAT on sales AND excise tax on specific goods. These are not mutually exclusive (NIRC §100 et seq.).
Misconception
The NIRC allows unlimited deductions from gross income.
Reality
The NIRC permits only deductions explicitly allowed by law, such as cost of goods sold, salaries, rent, and interest on business debt. Personal expenses, fines, and penalties are not deductible (NIRC §34).
Misconception
Estate and donor's tax rates are the same as income tax rates.
Reality
Estate tax and donor's tax are flat 6% taxes under NIRC §84 and §99 (as amended by CMEPA 2024), regardless of the size of the estate or gift. They are separate from income tax.
Misconception
The NIRC has not changed since 1997.
Reality
The NIRC has been substantially amended by TRAIN (2017), CREATE (2021), RA 11032 (2018), and CMEPA (2024). Tax rates, brackets, and incentives change regularly; taxpayers must stay current with BIR circulars.
Frequently Asked Questions
The NIRC is the primary law enacted by Congress (RA 8424). Revenue Regulations (RRs) are administrative rules issued by the BIR to implement and clarify NIRC provisions. RRs have the force of law but cannot contradict the NIRC. If an RR conflicts with the NIRC, the NIRC prevails (NIRC §3).
No. Only Congress can amend the NIRC through a new Republic Act. The BIR can only issue interpretive guidance (RRs, RMCs, BIR Rulings) that clarifies existing NIRC language. Major changes like TRAIN (RA 10963) and CREATE (RA 11534) required congressional action.
The NIRC is amended periodically by Congress, typically every 3–5 years. Recent major amendments include TRAIN (2017), RA 11032 (2018), CREATE (2021), and CMEPA (2024). The BIR also issues updated guidance through RMCs and BIR Rulings annually.
Yes. The NIRC applies to all persons earning Philippine-source income, including foreign nationals. Non-residents are taxed only on Philippine-source income; residents are taxed on worldwide income (NIRC §23(A) and §24(A)). Tax treaties may provide relief from double taxation.
The full NIRC (RA 8424) and all amendments are available on the BIR website (www.bir.gov.ph) and the Official Gazette (www.officialgazette.gov.ph). The BIR also publishes consolidated versions and updates in RMCs and BIR Rulings.
Yes. The NIRC provides a personal exemption of ₱250,000 for individual taxpayers (NIRC §24(A)(2)(a)). Additionally, RA 11032 allows self-employed individuals and professionals with gross receipts not exceeding ₱250,000 to use the Simplified Income Tax System (8% on gross receipts) instead of regular income tax.
Yes. Under NIRC §34(B), a net operating loss (NOL) in one year may be carried forward to offset income in the next three years. However, the loss must arise from a legitimate business activity, and you must maintain supporting documentation (NIRC §233).
In Practice
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The NIRC is the reference document for every BIR assessment, ruling, and enforcement action. When disputing a tax bill, you cite NIRC sections to support your position before the BIR and Court of Tax Appeals.
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Employers withhold income tax from employee salaries under NIRC §79 (withholding tax on compensation) and remit to the BIR monthly. Employees claim the withheld amount as a credit against their annual tax liability.
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VAT-registered businesses under NIRC §106 must issue invoices, maintain a VAT journal, and file quarterly VAT returns. Input tax credits are only available for VAT paid on business purchases, not personal expenses.
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The BIR issues Revenue Regulations and Memorandum Circulars to interpret NIRC provisions. For example, RR 7-2003 clarifies the treatment of fringe benefits; RMC 16-2020 addresses work-from-home arrangements. These are binding guidance.
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Penalties under NIRC §248 (25% surcharge + 12% annual interest) apply to unpaid taxes. Even if you dispute the assessment, interest accrues until you pay or win your appeal before the Court of Tax Appeals.
Learn More
Income Tax Calculator
Withholding Tax Calculator
Vat Calculator
Estate Tax Calculator
Bir Form 1701
Bir Form 2316
Bir Form 2550q
Bir Form 1601e
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Sources & References (3)
Primary sources and the laws, regulations, and official issuances this page relies on. Each citation links directly to the issuing authority’s document.
- LawPhil Project (Arellano Law Foundation). “NIRC of 1997 (RA 8424) — full enacted text.” lawphil.net. Republic Act No. 8424, National Internal Revenue Code of 1997. Accessed .
- Bureau of Internal Revenue. “BIR — Tax Code (consolidated, as amended).” bir.gov.ph. Bureau of Internal Revenue, Tax Code. Accessed .