Two appeals, two clocks, and one choice that can close the other

If the Department of Finance says the property is not the primary residence of anyone who qualifies and you disagree, that is a residency dispute. It goes back to DOF, in writing, through its electronic portal. If the residency finding is right but the value behind the number is wrong, that is a value dispute, and it goes to the New York City Tax Commission on Form TC107. Filing the wrong one does not get redirected for you.

Whether your letter calls it the non-primary residence surcharge, or you know it as the pied-a-terre tax from the headlines or the PAT tax from a law-firm client alert, the appeal paths below are the same, and so are their deadlines.

The fork, side by side

The clock at DOF, quoted

The window is measured from the city's action, not from yours. An appeal of an initial determination must be filed "no later than 30 days after the date that notice of such initial determination is transmitted", or, if no notice is transmitted, 30 days after the surcharge appears on the assessment roll (19 RCNY 62-06(b)).

Why does the order of operations matter?

The final rule carries an anti-forum-shopping provision: a Tax Commission determination controls and bars reconsideration at the Department of Finance. Asking the Tax Commission to review the exemption also requires challenging the value, and that route replaces the direct exemption application to DOF. The choice gets made before anything is filed, not after one path stalls.

One thing this site is not about, because the same forum handles both and the two get confused. The Tax Commission also hears the ordinary annual challenge to an assessment, the one that runs off the January Notice of Property Value on its own March calendar and its own forms. That filing is worked through at how a NYC assessment is challenged. It is a different application from the TC107 below, and filing one is not filing the other.

Read the DOF appeal mechanics when the dispute is residency, Form TC107 when it is value, and what is left after the window closes if the 30 days have run. The choice between the two forums, and why it is not reversible, is worked through in a practice note on the forum election. If the question is still which of those two the notice even puts you in, the notice questions, one page each starts further back. MGNY Consulting sorts a file onto the right track before the clock does it: 212-343-1111.