Kateryna Dzhevaga·IRS CAA · Authorized IRS e-file Provider·Federal practice (all 50 states)·EN · RU · UK
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Calculators & quizzes
Free tools to quickly make sense of your US tax situation — residency, FBAR, IRS debt, entity choice, and more. They run right in your browser.
Calculators
Resident or nonresident? (SPT)
Substantial Presence Test: Form 1040 vs 1040-NR, dual-status first year.
OpenIRS allowable expenses
Owe the IRS? How much you may spend and whether an Installment Agreement / OIC fits.
OpenDo you need to file FBAR?
Foreign-account check against the $10,000 threshold (FinCEN 114).
OpenTax calculator
A quick estimate of your 2026 US federal tax.
OpenSelf-employment tax
How much to set aside and pay via 1040-ES (15.3%).
OpenUkraine CFC calculator
Whether a Ukrainian must report a US LLC as a CFC (КИК).
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