Frequently Asked Questions

Find answers to the most common taxpayer questions at Keystone's updated, user friendly Frequently Asked Questions.


Extended Support Hours

In order to provide complete customer service to all taxpayers during this busy tax season ...
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Mailing Your Return or Payment

For the fastest processing of your tax return or quarterly payment, find the correct mailing address here.

We are top professionals in tax collection with over 30 years of proven success. Keystone’s automated process is built upon state of the art technology and Act 32 compliance. We combine speed, accuracy and quality control, to deliver the fastest payments at the lowest cost. Legal counsel and accounting professionals provide you with the confidence you need in your collector. We offer the resources you expect and deserve.