Speaking as a layman, not as a tax expert:
If you are a US citizen or legal US resident, the IRS asserts a claim on a portion of your worldwide income. They assert this claim, regardless of where you live (in the US or abroad), where your income is earned (here or abroad), or whether you have an income tax liability in another country.
In your case, regardless of (1) whether you live here (or in the Philippines, or anywhere else in the world), (2) whether you earn your money here (or somewhere else), and (3) whether you pay taxes in the Philippines (or even in several other countries), the IRS will claim that you have a US tax liability, by virtue of your US citizenship. So, count on having to file US income taxes in every year that (1) you are a US citizen, and (2) you have worldwide income in excess of the US tax-filing threshold.
If you pay income taxes in the Philippines (or in any other foreign country), then your goal should be to accurately claim credit on your US tax return for the foreign taxes you have actually paid.
Thatâs about as far as I can go with un-official advice. You need to exercise your own due diligence, from this point forward. Request the relevant tax publications, and forms, from the IRS. If those materials are not sufficient to answer all your questions, and guide you in claiming your foreign tax credit, then youâll need to consult a licensed tax adviser.
Keep this in mind: you can get free advice from the IRS on matters like this â BUT they can be wrong â and when they are, they assume that itâs YOUR fault for taking bad advice! Ainât they a swell bunch of folks?
This post might be of interest to you â especially the part about my Canadian friend.