Net Income and Taxable Income Calculation
Last Updated: June 13, 2026
tips_and_updatesDefinition
Net income is your total gross income minus all allowable deductions as defined by the Bureau of Internal Revenue (BIR). It represents your actual taxable income after reducing gross earnings by legitimate business expenses, personal exemptions, and other BIR-approved deductions.
Net income forms the foundation of Philippine income tax computation under the National Internal Revenue Code (NIRC). For individuals, this includes compensation income minus personal and additional exemptions, plus other income sources reduced by allowable deductions. For businesses, net income equals gross receipts minus ordinary and necessary business expenses. The BIR distinguishes between different types of net income calculations depending on your taxpayer classification. Individual taxpayers report net compensation income on BIR Form 1700, while self-employed individuals and professionals use BIR Form 1701 to declare net business income. Corporations file BIR Form 1702 showing net taxable income after all allowable deductions. Understanding net income is crucial because it determines your final tax liability. Revenue Regulation No. 2-98 specifies that only the net income amount is subject to income tax rates, making accurate calculation essential for proper tax compliance and avoiding penalties under Section 248 of the NIRC.
Detailed Explanation
Definition
Net income is the amount remaining after subtracting all allowable deductions from your gross income. Under the National Internal Revenue Code (NIRC §32), net income forms the basis for computing your income tax liability. It is not the same as profit; net income is a tax concept that follows BIR rules, not accounting standards.
Gross Income vs. Net Income
Gross income includes all income from whatever source derived, unless specifically exempt by law (NIRC §32(A)). This includes salaries, wages, business profits, rental income, interest, dividends, and capital gains. Net income is what remains after you subtract allowable deductions from this gross total.
Allowable Deductions
The BIR permits deductions that are ordinary and necessary for earning income. For employees, the standard deduction is 13% of gross income or ₱250,000, whichever is lower (NIRC §34(L), as amended by RA 10963 TRAIN Law). For self-employed individuals and businesses, deductions include cost of goods sold, salaries and wages, rent, utilities, depreciation, and other ordinary business expenses (NIRC §34(A)).
Personal Exemptions and Additional Deductions
Individual taxpayers may claim a basic personal exemption of ₱250,000 per year (NIRC §35(A), as amended by TRAIN Law). Married individuals filing jointly may claim ₱500,000. Senior citizens and persons with disability may claim additional exemptions of ₱250,000 (NIRC §35(B)). These reduce net income further before applying the tax rate.
Non-Deductible Items
Certain expenses are not deductible even if incurred to earn income. These include personal, family, or living expenses; losses from wagering or gambling; fines and penalties; and donations or gifts (NIRC §34(B)). Disallowed deductions increase your taxable net income.
Net Income for Different Taxpayer Types
Employees: Gross salary minus 13% standard deduction (or ₱250,000, whichever is lower) minus personal exemption (₱250,000) equals net taxable income.
Self-Employed and Business Owners: Gross receipts minus cost of goods sold and operating expenses, minus personal exemption, equals net taxable income.
Professionals (doctors, lawyers, accountants): Gross professional fees minus allowable professional expenses and personal exemption equals net taxable income.
Computation Example
Juan dela Cruz earns ₱600,000 annually as an employee. His gross income is ₱600,000. The standard deduction is 13% of ₱600,000 = ₱78,000. His personal exemption is ₱250,000. Net taxable income = ₱600,000 − ₱78,000 − ₱250,000 = ₱272,000. This ₱272,000 is subject to the income tax rate of 15% (second bracket under TRAIN Law), resulting in income tax of ₱40,800.
Importance in Tax Planning
Understanding net income is critical for tax planning. Maximizing allowable deductions legally reduces your net income and therefore your tax liability. Keeping accurate records of business expenses, professional fees, and other deductible items is essential. The BIR requires documentation (receipts, invoices, contracts) to support claimed deductions during audit.
Why it Matters
Net income determines how much income tax you owe. By understanding what deductions the BIR allows, you can legally reduce your taxable income and lower your tax bill. Employees, self-employed individuals, and business owners all benefit from knowing how to calculate net income correctly and claim all eligible deductions.
Examples
01Salaried Employee, ₱600,000 Annual Income
02Self-Employed Professional, ₱800,000 Gross Receipts
03Small Business Owner, ₱500,000 Net Sales
04Multiple Income Sources, ₱1,200,000 Total
05Senior Citizen Employee, ₱400,000 Annual Salary
Common Misconceptions
Misconception
Net income and profit are the same thing.
Reality
Net income is a tax concept based on BIR rules; profit is an accounting concept. They may differ because the BIR disallows certain expenses that accountants allow (NIRC §34(B)).
Misconception
All business expenses are deductible from gross income.
Reality
Only ordinary and necessary expenses incurred to earn income are deductible. Personal expenses, fines, penalties, and losses from gambling are not deductible (NIRC §34(A), (B)).
Misconception
The standard deduction for employees is always 13% of gross income.
Reality
The standard deduction is 13% of gross income or ₱250,000, whichever is lower. High-earning employees are capped at ₱250,000 (NIRC §34(L), TRAIN Law RA 10963).
Misconception
Personal exemptions reduce your gross income before calculating deductions.
Reality
Personal exemptions are subtracted after deductions. You first deduct allowable expenses, then subtract your personal exemption from the result (NIRC §35(A)).
Misconception
If you have a net loss, you owe no tax and the loss disappears.
Reality
Net losses can be carried forward to offset income in future years, subject to BIR rules on loss carryforward periods (NIRC §34(F)).
Frequently Asked Questions
Combine all gross income sources. Apply the 13% standard deduction (capped at ₱250,000) to salary income. Deduct actual business expenses from self-employment income. Subtract your personal exemption (₱250,000) from the total. The result is your net taxable income (NIRC §32(A), §34(A), §34(L), §35(A)).
No. Personal, family, and living expenses are not deductible, even if they benefit your health or productivity (NIRC §34(B)). Only ordinary and necessary business or professional expenses are deductible. Health insurance for employees may be deductible as a fringe benefit under specific BIR rules.
You have a net loss. You owe no income tax for that year. The loss can be carried forward to offset income in the next three consecutive years, provided you file a timely return reporting the loss (NIRC §34(F)).
Yes. The BIR requires supporting documentation (receipts, invoices, contracts, bank statements) for all claimed deductions. Without documentation, the BIR may disallow the deduction during audit. Keep records for at least three years (NIRC §34(A), BIR Regulation 2-98).
No. Single individuals and heads of household claim ₱250,000. Married individuals filing jointly claim ₱500,000. Senior citizens (age 65+) and persons with disability claim an additional ₱250,000 on top of their basic exemption (NIRC §35(A), (B)).
The standard deduction is 13% of gross income or ₱250,000, whichever is lower. High-earning employees are capped at ₱250,000 regardless of income level. This means higher earners pay a higher effective tax rate (NIRC §34(L), TRAIN Law RA 10963).
Net income is gross income minus allowable deductions. Taxable income is net income minus personal exemptions. Taxable income is the amount to which you apply the income tax rate. For example, if net income is ₱500,000 and personal exemption is ₱250,000, taxable income is ₱250,000 (NIRC §24(A), §35(A)).
In Practice
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Employees must retain payslips and BIR Form 2316 (Certificate of Compensation Income Tax Withheld) to verify gross income and withholding when filing annual returns.
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Self-employed individuals and business owners must maintain detailed records (receipts, invoices, contracts, bank statements) for all claimed deductions; the BIR may disallow deductions lacking documentation during audit.
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Professionals claiming deductions for home office, vehicle, or equipment must allocate expenses proportionally to business use; personal portions are not deductible.
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Rental income is subject to a 20% standard deduction if actual expenses are not documented; actual expenses require supporting receipts (NIRC §34(L)).
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Net losses from business or professional practice can be carried forward for up to three consecutive years to offset future income, but only if the taxpayer files a timely return reporting the loss (NIRC §34(F)).
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Glossary Terms
Sources & References (2)
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 §31, §34 (net income / allowable deductions) — full text.” lawphil.net. NIRC of 1997 (RA 8424), Sec. 31 and 34. Accessed .