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CTPFL is reported in Box 14 on a W-2 which is where your payroll department can enter information they find helpful, but not necessarily tax related. 

If the CTPFL tax is listed there, be sure to select "Other deductible state or local tax" from the Category drop-down list on the W-2 input screen and the tax will carry to Schedule A. 

Of course the SALT (State and Local tax) limit of 10,000 will still apply.