13 CALCULATORS · FREE · NO SIGNUP

The numbers before you decide, not after

All free, no email required. They are ordered by the moment you usually need them, not alphabetically.

Before you start

What is worth knowing before you move anything.

Tax residency

How many days in the U.S. make you a tax resident. The substantial presence test, with your own dates.

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Federal tax brackets

The 2025 and 2026 brackets, and what your income level actually pays.

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Do you need an ITIN?

A short quiz to find out whether you actually need one, or are paying for something you don't.

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BOI / FinCEN

Whether your LLC has to report beneficial owners or is exempt. A lot of outdated information is circulating.

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While you operate

The day-to-day numbers of the business.

Withholding by country

How much the U.S. withholds on what you get paid, and how much a treaty changes it.

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Gross to net

What is left of a U.S. salary after every deduction.

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Business banking

Who opens an account for a non-resident LLC without an SSN, and what each one looks at.

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Business credit

How the company builds its own credit history without using your personal number.

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IRS penalties

What builds up for filing late, per form and per year.

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Assets and exit

What shows up once there are assets involved.

Estate tax

Your exposure as a non-resident. The exemption is 60,000 dollars, not fifteen million.

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FIRPTA on a sale

The withholding on the sale price of a property, which is not the same as a tax.

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Buying property

The real cost of getting in, which is almost never the price of the house.

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Retirement in USD

How much capital your target monthly income needs, and what starting late costs.

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