Written by an Argentine public accountant who is also an IRS Tax Preparer and a Florida Notary — not by a marketing blog. Every guide is a free PDF in exchange for your email: pick yours, leave your email, get it instantly.
The guides our clients ask for most — LLC setup, compliance and banking. All 16 in English.
The full formation path, step by verifiable step: state, registered agent, articles, EIN — and everything in between.
The exact dates that trigger penalties if you miss them — Form 5472, annual reports, registered agent — on one page.
Due dates, fees and the USD 400 Florida late fee, how to file step by step — and what administrative dissolution really costs you.
October 15, 2026 is gone. If the return was not filed, it still has to be filed, late; reasonable cause is a defense against the penalty, case by case and without guarantee. The guide: who has to file, the transactions with the owner that count, why it cannot be e-filed, and how to approach the late filing (the multi-year late-filing guide is in Spanish: onell.us/guias/5472-tardio).
What Mercury, Wise and Relay actually check before approving you, and the consistency checklist that gets you through.
The exemption for US-formed entities is final (interim rule of March 2025, final rule of August 2026): which group you're in, who still files, and who to stop paying.
When you actually need one (and when you don't), the W-7 without the classic traps, and how to keep your passport.
Bought a bargain LLC? The 9-question diagnostic to find out what's missing and how to fix it — without paying twice.
How remote online notarization works, which documents it covers, and how the apostille replaces consular legalization in 120+ Convention countries (and what to confirm with the receiver first).
What the POA must say before you sign, the ID checks that actually fail, the video session step by step — and when the apostille is money wasted.
Sign once, not twice: what each power has to say (estate, property sale, ARCA's Form 3283, your LLC before the IGJ), the three mistakes that send documents back, the step by step over video call and what to bring to the session.
The one apostille Florida cannot issue: why the U.S. Department of State handles it, requesting the certificate (USD 18), the DS-4194 (USD 20), real timelines by mail and in DC — and the five mistakes that send it back.
USD 60,000 of exemption vs the residents' millions: which assets count, and how it's planned while alive.
Why local probate doesn't unlock it, the 706-NA and the IRS transfer certificate, real timelines — and what can still be fixed while alive.
LLC or your own name, DSCR financing, the net-income election and FIRPTA: the 5 decisions before closing.
When the US truly doesn't tax you, when it does, and the giant difference between "no tax due" and "nothing to file".
Looking for the full library — apostilles, royalties, Amazon & Stripe, succession planning and more? Browse the 40 guides on the Spanish page →
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