Income Tax Calculator Philippines 2026: 8% Flat Tax vs. Graduated Rates

Last updated: September 2026 — rates current under the TRAIN Law (RA 10963), Tax Code Section 24(A)(2)(b), and BIR Revenue Regulations 8-2018.

If you’re an employee, our salary calculator already covers your full net pay. This tool is for a more specific — and more commonly miscalculated — question: if you’re self-employed, a freelancer, or a professional, should you elect the 8% flat tax or stick with graduated income tax rates? And if you have both a job and side income, what actually changes?

Quick answer: The 8% flat tax applies to gross sales/receipts over ₱250,000/year (if you’re purely self-employed) and replaces both the graduated income tax and the 3% percentage tax — but it’s only available if your annual gross stays at or under the ₱3,000,000 VAT threshold. Graduated rates let you deduct actual expenses (or a flat 40% Optional Standard Deduction) but you’ll also owe the 3% percentage tax separately unless you’re VAT-registered. If you’re a mixed income earner — salaried plus freelance — the ₱250,000 exemption does not apply a second time to your 8% business income; that’s the rule most other calculators get wrong.

How This Tax Calculator Works

1. Employee only: Uses the same monthly withholding math as our salary calculator, annualized.
2. Self-employed only, 8% option: (Gross sales/receipts − ₱250,000) × 8%, replacing both graduated income tax and the 3% percentage tax — available only if annual gross stays at or under ₱3,000,000.
3. Self-employed only, graduated: Net taxable income (gross sales minus either a flat 40% Optional Standard Deduction or your actual itemized expenses) run through the annual graduated brackets — plus a separate 3% percentage tax unless you’re VAT-registered.
4. Mixed income earner: Compensation is taxed on its own graduated schedule as usual. For the business side, electing 8% applies to your entire gross sales/receipts with no further ₱250,000 subtraction (the exemption is already “used” against your compensation income). Electing graduated rates instead stacks your business net income on top of your compensation income on the same annual bracket table — this calculator shows the tax specifically attributable to that stacked business portion.

8% Flat Tax vs. Graduated Rates: Which Wins?

There’s no universal answer — it comes down to your expense ratio:

• Low expenses (well under 40% of gross): The 8% flat rate usually wins, especially since it also eliminates the 3% percentage tax entirely.
• High expenses (well over 40% of gross): Itemized deductions under graduated rates can produce a lower bill, since you’re taxed only on what’s actually left after real costs.
• Right around 40% expenses: This is close enough to run both scenarios through the calculator above and compare directly.

Whichever you choose, the election happens in your first-quarter BIR Form 1701Q filing and is irrevocable for the rest of that taxable year — if you don’t explicitly signify a choice, the BIR defaults you to itemized deductions under graduated rates, not the 8% option.

The Mixed Income Earner Trap

This is the part most online calculators get wrong: if you already have a job and also freelance or run a side business, the ₱250,000 tax-exempt threshold is considered “used up” against your compensation income under the graduated table. It does not apply a second time to reduce your business income if you elect the 8% rate — the full gross sales/receipts figure gets taxed at 8%, not the amount after subtracting ₱250,000. This is explicitly addressed in BIR Revenue Memorandum Order 23-2018, and getting it wrong is one of the most common self-filing mistakes for side-income earners in the Philippines.

Who Can’t Use the 8% Option

• Anyone VAT-registered, regardless of how small their actual receipts are
• Anyone whose gross sales/receipts exceed the ₱3,000,000 VAT threshold in the year
• Taxpayers subject to a different percentage tax (common carriers, banks, amusement places, etc.)
• Partners receiving a distributive share from a general professional partnership
• Purely compensation earners with no business or professional income

Frequently Asked Questions

Q: Is the 8% tax better than graduated rates for freelancers?
A: It depends on your expense ratio. Low-expense freelancers usually save with 8%; those with high, documentable business costs often do better under graduated rates with itemized deductions.

Q: I have a full-time job and freelance on the side — does the ₱250,000 exemption apply to my freelance income too?
A: No. As a mixed income earner electing the 8% rate, the ₱250,000 exemption is already applied against your compensation income and doesn’t apply again to your business income — the full amount is taxed at 8%.

Q: What happens if my gross sales go over ₱3,000,000 mid-year?
A: You lose eligibility for the 8% option, must register for VAT, and switch to graduated rates with either OSD or itemized deductions going forward.

Q: Can I switch between the 8% rate and graduated rates during the year?
A: No. Your election on the first-quarter BIR Form 1701Q is irrevocable for that entire taxable year.

Q: Do I still owe percentage tax if I choose graduated rates?
A: Generally yes — a 3% percentage tax on gross sales/receipts applies under graduated rates unless you’re VAT-registered, in which case 12% VAT applies instead. The 8% option specifically replaces both of these.

Disclaimer: NationalIDDigital.ph is an independent resource and is not affiliated with the BIR, SSS, GSIS, PhilHealth, or Pag-IBIG Fund. This calculator provides general estimates only and does not constitute tax advice. Percentage tax, VAT, and other filing obligations are not fully modeled here — consult a licensed CPA or the BIR for your specific situation before filing.