Versions of Connecticut General Statutes 12-517b - Installment payment on account of estimated tax. Amount and when payable on LawServer 2023 Connecticut General Statutes 12-517b – Installment payment on account of estimated tax. Amount and when payable 2022 Connecticut General Statutes 12-517b – Installment payment on account of estimated tax. Amount and when payable 2020 Connecticut General Statutes 12-517b – Installment payment on account of estimated tax. Amount and when payable 2019 Connecticut General Statutes 12-517b – Installment payment on account of estimated tax. Amount and when payable 2016 Connecticut General Statutes 12-517b – Installment payment on account of estimated tax. Amount and when payable 2014 Connecticut General Statutes 12-517b – Installment payment on account of estimated tax. Amount and when payable 2013 Connecticut General Statutes 12-517b – Installment payment on account of estimated tax. Amount and when payable 2009 Connecticut General Statutes 12-517b – Installment payment on account of estimated tax. Amount and when payable