Professional-grade calculators for international tax, compliance, and personal income tax. Every tool cites specific IRC sections and Treasury regulations.
Each calculator provides real-time computation based on your inputs. Results are estimates and educational guidance only. Always verify against current primary authority (IRC, Treasury regulations, IRS forms) and consult a tax professional before relying on any calculation for filing or planning decisions.
Determine whether you must file Form 8938 (FATCA) and FinCEN 114 (FBAR) based on residency status and foreign account balances.
Authority: 31 USC §5314, IRC §6038D
Open Checker →Calculate your 2026 FEIE under IRC §911. For US citizens and residents living and working abroad.
2026 Limit: $132,900
Open Calculator →Determine eligibility for dual-status treatment in year of US arrival or departure.
Authority: IRC §7701(b)(3)
Open Validator →Calculate your 2026 Child Tax Credit (CTC) and Additional CTC refund.
Authority: IRC §24
Open Calculator →Calculate your 2026 RMD from traditional IRAs and retirement plans using IRS life expectancy tables.
Authority: IRC §408(a)(6), Form 541
Open Calculator →Calculate 2026 Section 179 business equipment deduction. $1,220,000 annual limit with $5,000,000 phase-out.
Authority: IRC §179
Open Calculator →Determine US tax residency under the substantial presence test formula.
Open Calculator →Determine FinCEN 114 and Form 8938 filing requirements based on foreign account balances.
Open Checker →Determine Form 5471 filing obligation for US persons with interests in foreign corporations.
Open Checker →Estimate personal and corporate income tax for 2026 using IRS brackets and deductions.
Open Estimator →Estimate tax savings under Puerto Rico Act 60 Individual Investors incentives.
Open Estimator →Estimate tax savings under USVI Economic Development Commission 90% tax credit program.
Open Estimator →Browse our comprehensive guides covering every major tax topic, forms, and cross-border issues. Use the search bar to find specific guidance.
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