Guides

U.S. tax guides for owners of a U.S. LLC

Explained by a tax preparer with more than 35 years of experience, with official sources and review dates. How we make them.

• Got a letter from the IRS? What 147C, 5071C, CP2000, CP14 and CP01A mean

  How to tell if it is real, what each letter means, your deadline and how to respond.

  Updated: October 1, 2026 · Katiuska Bustillos

• How to get an ITIN (Form W-7) in 2026

  Who needs one, what Form W-7 requires, where to file, how long it takes and when to renew.

  Updated: October 1, 2026 · Katiuska Bustillos

• Bank account for a non-resident's U.S. LLC: Mercury, Relay, Wise and traditional banks

  Documents banks ask for, fintech vs. traditional bank, FDIC coverage and how the account feeds Form 5472.

  Updated: October 1, 2026 · Katiuska Bustillos

• How to get an EIN for your LLC as a non-U.S. resident

  Form SS-4 line by line, how to apply from outside the U.S. and how to get Letter 147C.

  Updated: October 1, 2026 · Katiuska Bustillos

• What taxes does a non-resident's U.S. LLC pay?

  When you owe U.S. tax and when you don't, what ECI is, and when you need Form 1040-NR.

  Updated: October 1, 2026 · Katiuska Bustillos

• North Carolina LLC: formation, annual report and obligations

  Articles of Organization, registered agent, the $200 annual report and North Carolina taxes, whether you live here or abroad.

  Updated: October 1, 2026 · Katiuska Bustillos

• Which state should you form your LLC in if you live abroad? Wyoming, New Mexico, Delaware, Florida or North Carolina

  What it costs to form and, more importantly, to keep an LLC every year in five states, and when the state really matters.

  Updated: October 1, 2026 · Katiuska Bustillos

• Form 5472 penalty: how to catch up on late filings and request relief

  How much the penalty is, how to file past years and how to ask for it to be removed.

  Updated: October 1, 2026 · Katiuska Bustillos

• I have a U.S. LLC, now what? Annual compliance calendar

  What comes after formation, the yearly calendar, what happens if you don't use it and how to close it.

  Updated: October 1, 2026 · Katiuska Bustillos

• Form 5472 and pro forma 1120: a 2026 guide for foreign owners of a U.S. LLC

  Who files it, which transactions to report, how to send it and when it is due.

  Updated: September 24, 2026 · Katiuska Bustillos