If you used the Summary method of reporting your 1099-B transactions, you don't actually need to mail Form 8453 to Pennsylvania.
Click this link for more info on PA Form 8453.
If this applies, you may need to mail Form 8949 and your 1099-B statement to the IRS.
Click this link for more info on Mailing Form 8949.
Your 'Filing Instructions' for your Federal and State returns will tell you what to mail and where to send it, if required.
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