Upper Darby Township enacted a local earned income tax (EIT) that went into effect on Jan. 1. All working residents of the township and nonresidents who work in the township are subject to the 1% tax on earned income and net profits. Keystone Collections Group serves as the local EIT administrator for all communities imposing the tax in Delaware County and will be responsible for collecting the tax for Upper Darby Township. Taxpayers can visit Keystone’s website for answers to frequently asked questions, forms and more information.
Source: Chester Spirit; 11/12/202
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Upper Darby EIT goes into effect
Published Friday, January 2, 2026