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These plans areexcluded from tax on your federal return, but not onyour state income tax return. Once you retire and beginto receive pension benefits, you will pay federal tax onyour retirement payments, but you will not pay PA taxon those benefits.
Taxation of Social Security benefits. Since the passage of the 1983 Amendments to the Social Security Act Social Security benefits are subject to taxation. The amount of Social Security income which is taxable depends on your taxable income. Most high-income retirees will have 85% of Social Security benefits taxable. For lower-income retirees, less than 85% will be taxable, but many retirees in a 15% tax bracket will face a marginal tax rate much higher than 15%.