UPDATED FOR TAX YEAR 2019
Do not mail Form PA-8453 to the Pennsylvania Department of Revenue (PA DOR) unless you are notified by the PA DOR (very rare).
PA Form 8453 is required for all electronic returns that have not selected the Federal Self-Select PIN. Taxpayers filing electronically from home computers must keep the signed Form PA-8453 and supporting documents for three (3) years after the due date of the return, or the date the return was filed electronically, whichever date is later.
[Edited | 4/8/2020 | 12:41pm PDT]
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