We ask where your jobs were located by state because federal income reporting is only one part of your tax picture. State tax liability often depends on where services were physically performed, not just where you live, where the payer is located, or where the payment was deposited. For clients who work in multiple states, the state allocation question can meaningfully change the filing package.

New York and California are good examples of why this matters. New York’s guidance for nonresidents states that nonresidents generally pay New York tax on New York-source income, including earnings from work performed in New York State. California similarly explains that compensation for services performed in California can be California-source income. In both states, the physical place where the work occurred can be a key tax fact.

This state-by-state allocation does not always mean we are filing a separate return in every state listed. The ultimate filing decision depends on thresholds, withholding, the amount of income sourced there, residency status, and the interaction of state laws. But we cannot begin that analysis without an allocation starting point.

This question is also important because the tax forms you receive do not always solve the state problem for us. A form may show federal income and withholding but provide incomplete state detail. It may list one state while your services were actually performed in more than one. It may reflect a payer’s reporting convention rather than the underlying geographic reality of the work.

For many clients, especially nonresidents or part-year residents, state allocation also affects credits and double-tax relief. If one state taxes income sourced there and the taxpayer’s resident state also taxes worldwide income, credits or other relief mechanisms may be relevant. But those calculations only work correctly if the underlying sourcing information is reasonably accurate.

Because precise day-by-day revenue assignment is not always realistic, our organizer often asks for an approximate percentage by state. That is not because precision is unimportant. It is because a practical, well-considered estimate is often the best first step when there were many jobs during the year.

The most helpful response to this question is therefore honest and practical. Use your calendar, bookings, agency records, invoices, and memory to estimate where the U.S. work occurred, then make sure the total equals 100 percent. If a large portion of work happened outside the United States, say so clearly.

In short, we ask where your jobs were located by state because location can determine where income is sourced, whether nonresident returns are required, and how state tax credits and allocations should be handled.