Use this endpoint to verify your addresses before using them in the calculator.

It will return the address plus a series of flags regarding the address provided:

is_suitable_for_taxation
Boolean indicating whether the location is suitable for use as a work location and/or residency. If false, one or more of the following flags will be set.

  • is_po_box
    PO Box addresses are mailing addresses, but are not suitable for taxation

  • is_state_mismatch
    An address's resolved geo-location must match the specified state or it is considered unsuitable for taxation

  • is_armed_forces_address
    Armed Forces (APO/FPO/DPO) addresses are suitable for mailing but not for taxation purposes. Use the employee's last US address for residency purposes.

  • is_foreign_address
    Foreign addresses are suitable for mailing but not for taxation purposes

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