Cross Border & Local Apportionment
Multi-state and international tax allocation tools for businesses and individuals.
Multi-state and international tax allocation tools for businesses and individuals.
Welcome to our Cross Border and Local Apportionment hub. Here you will find tools designed to help with multi-state income sourcing, apportionment factor calculations, foreign tax credits, and other cross-jurisdictional tax allocation needs. Each tool is built on the latest regulations and official guidance. For international expat tax tools including FBAR, FATCA, and double taxation treaty calculations, visit our International & Expat Tax Calculators hub.
Calculate your Georgia part-year resident income tax instantly. Free calculator with step-by-step guidance, Schedule 3 walkthrough, and real examples for 2026.
Calculate your 2026 Massachusetts millionaire's tax apportionment in seconds. Enter your income, working days, and residency status. Free calculator updated for the $1,107,750 surtax threshold.
Calculate your New York nonresident allocation percentage instantly. Free tool for remote workers, commuters, and part-year residents. Updated for 2026 tax year.
Calculate your NYC part-year resident income tax allocation instantly. Free calculator with 2025 tax rates, step-by-step examples, and audit prevention tips.
Confused about Ohio municipal tax reciprocity? See how the credit works, which cities offer 100% vs. partial credit, and calculate exactly what you owe. Updated with HB503 status.
Working in Yonkers but living elsewhere? Learn how to claim the 0.5% nonresident tax credit, file Form Y-203, and get your refund. Updated for 2026 with calculator.
Philadelphia Wage Tax vs School Income Tax: 2025 rates are 3.74% for both. But one taxes your paycheck; the other taxes investments, dividends, and capital gains. See who pays which and calculate your exact liability.
Calculate your Pittsburgh hourly paycheck with 3% local wage tax withheld. Includes PA state tax, local EIT, and net pay breakdown for both residents and non-residents. Updated for 2026.