Do expats need quarterly tax payments?
How self-employed and investment-income taxpayers abroad should think about estimated payments, withholding, and safe documentation.
An expat may need estimated tax payments when withholding is not enough to cover the expected U.S. tax. The calculation depends on worldwide income, foreign tax credits, FEIE, self-employment tax, filing status, and prior-year tax. Use the current IRS estimated-tax instructions and document how foreign taxes and timing were modeled.