About intelliJuan
Knowledge that works.
intelliJuan is an independent Philippine information platform that helps people understand rules, compare figures, and find practical references.
Our current focus is Philippine tax, business, and compliance information for freelancers, professionals, sole proprietors, mixed-income earners, and people preparing to register with the BIR.
Last reviewed: September 10, 2026
Why intelliJuan exists
Understanding your tax obligations can mean working through forms, regulations, and guidance scattered across different sources. Even after finding the relevant rule, figuring out how it affects your income can take time.
intelliJuan brings those references together through plain-language guides and tools that explain the figures behind an estimate.
What you’ll find here
The site’s guides cover BIR registration, income tax methods, filing deadlines, invoicing, books of accounts, and related compliance topics.
The tax calculator compares applicable income tax methods using the figures you enter. Its detailed report explains the deductions, calculations, and assumptions behind estimated tax and after-tax income, including percentage tax where applicable.
These resources help you understand your obligations and prepare questions for an accountant, tax professional, or the BIR.
As the site develops, we plan to cover other practical topics relevant to Filipinos.
How we prepare information
We research tax content using Philippine laws, BIR issuances, official forms and instructions, and other government references. Secondary sources may provide context, with material tax rules checked against official references where possible.
Guides include sources so you can read the underlying guidance. We review content when relevant rules or guidance change and revise explanations when we identify errors or gaps.
Using the information
intelliJuan provides educational information and estimates. It is independent of the BIR and does not provide personalized tax, accounting, legal, or financial advice.
Your registration history, transactions, records, and prior payments can affect your actual tax position. Calculator estimates are not tax returns or determinations of the final amount payable. For decisions involving your circumstances, consult an appropriate professional or the relevant government office.
intelliJuan is created and maintained by Jace R., who researches Philippine tax rules and develops the site’s guides and tools.