Absolutely, a Spanish resident can legally own a USA LLC, irrespective of the state in︄ which it's registered, provided both U.S. and Spanish laws are adhered to. There's no obligation︅ to establish a Spanish branch for your U.S. LLC.
Regarding the U.S. aspect: You're︆ on point. While there's no mandatory accounting requirement, it's highly advisable to maintain comprehensive records︇ – not just for non-residents, but for U.S. residents as well. In Spain, if faced︈ with an audit, you'll be asked for documentary evidence supporting all transactions. Therefore, even if︉ accounting isn't obligatory in the U.S., it becomes virtually essential for clarity and compliance from︊ the Spanish perspective.
Let's illustrate with a few examples:
Phone Bill Deductions: In the︋ U.S., it's common practice to write off 100% of your phone bill as a business︌ expense, even if it's a device you use for personal matters. In Spain, the approach︍ is more conservative. Only 50% of the bill can be written off since it's assumed︎ that the phone is used for personal purposes half the time. Now, if you fully️ deduct your phone bill under your U.S. LLC and subsequently face a Spanish audit, Hacienda will only acknowledge 50% of that deduction.
In essence, while you can certainly retain ownership of the USA LLC, you should be cautious and apply Spanish regulations and norms where necessary, especially when it concerns potential deductions.