Paying Taxes in Taiwan

Hi everyone, is it possible to get a tax inquiry by April? I was planning to drop by the Taipei tax office this month just to inquire how much I need to pay for 2017. Anybody did this before?

Anyone one know why google maps says TAMSUI tax office is permanently closed and which office to use if it is permanently closed?

It is the second office, so, there should be a first office.

Added:
And, it seems to be in the same building with the closed second office.

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Thanks, that makes sense