Contact Us
Have a question, bug report, or feature request? Reach out anytime:
For bug reports, please include your device model, iOS version, and a screenshot if possible.
Frequently Asked Questions
Is KalTax PH free?
Yes. KalTax PH is completely free to use. It is supported by ads.
Is my data safe? Do you collect anything?
Absolutely. KalTax PH does not collect, transmit, or store any of your personal data. All calculations, inputs, and filled forms stay entirely on your device. No account or login is required. Read our full Privacy Policy.
Does the app work offline?
Yes. The tax calculator, BIR form directory, and PDF form filler all work offline. An internet connection is only needed to load ads and to download official BIR form PDFs from the BIR website.
How accurate are the tax calculations?
KalTax PH uses the latest TRAIN Law brackets (2025), SSS, PhilHealth, and Pag-IBIG contribution tables. The app shows a step-by-step breakdown of every calculation so you can verify the math yourself. However, KalTax PH is not affiliated with the BIR and should be used for estimation purposes only.
Which taxpayer types are supported?
The calculator supports employees (compensation income), self-employed individuals and freelancers (8% flat tax, 40% OSD, or itemized deductions), and mixed income earners. It computes under the CREATE Act corporate rates as well.
How do I fill out and export BIR forms?
Go to BIR Forms, select a form, and tap "Fill & Export." Tap anywhere on the PDF to place a text field, type your information, and drag to reposition. When you're done, tap "Save & Share" to export the filled PDF to your device or share it via the native share sheet.
Which BIR forms are included?
KalTax PH ships with 27 BIR forms including 1901, 1701, 1701A, 1701Q, 2307, 2316, 2550Q, 2551Q, 1601-C, and more. The full list is available in the BIR Forms section of the app.
How do I report a bug or request a feature?
Email us at dev.t1nker.io@gmail.com with a description of the issue or your suggestion. For bugs, please include your device model, iOS version, and a screenshot.
How often are the tax tables updated?
We update the contribution tables (SSS, PhilHealth, Pag-IBIG) and tax brackets whenever the government releases new rates. You can check the latest values on the About page inside the app.