US taxes are complicated. We are not.
CPA-backed tax filing for US businesses owned by founders anywhere in the world. Federal, state, Form 5472, sales tax — handled.
We do not just file your taxes. We make sure you never pay more than you owe and never miss a deadline.
The IRS penalty for missing Form 5472 is $25,000 per year — even if your LLC had zero revenue.
If you are a non-US founder, you likely need:
Everything in our tax service
One subscription. Every filing covered.
Why founders trust Prolify for taxes
We specialize in international founders, not just domestic businesses.
CPA-backed every time
Every return is reviewed and signed by a licensed CPA. Not a software tool. Not an algorithm. A real professional accountable for your filing.
Built for non-US founders
We understand the specific requirements for foreign-owned LLCs: Form 5472, ECI rules, treaty considerations. Most accountants do not.
We own the deadlines
We track every due date and file proactively. You will never miss a quarterly payment or receive a late filing penalty because we forgot to remind you.
Tax questions, answered
Do I need to file taxes if my LLC had no revenue?
Yes. Foreign-owned US LLCs must file Form 5472 even with zero activity. Failure to file carries a $25,000 penalty per year.
What is Form 5472 and do I need it?
Form 5472 is required for any US LLC with a foreign (non-US) owner. It reports transactions between the LLC and its foreign owner. If you formed a US LLC and you are not a US citizen or resident, you almost certainly need this.
When are business taxes due?
S-Corps and partnerships: March 15. C-Corps and sole proprietors: April 15. Extensions are available. We track all deadlines for you.
Can you help with back taxes?
Yes. We can prepare prior-year returns, file late Form 5472s, and help negotiate penalty abatement with the IRS.
File once. File right. Sleep better.
Join founders in 50+ countries who trust Prolify with their US tax filings.
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