OLT PRO Accounts
Supported Forms
Questions
More Information
- Form CT-1040 Resident Income Tax Return
- Form CT-1040 Resident Income Tax Return Instructions
- Form CT-1040NF/PY Nonresident and Part-Year Resident Return
Form CT-1040NF/PY Nonresident and Part-Year Resident Return Instructions - Form CT-1040V Electronic Filing Payment Voucher
- Form CT-1040X Amended Income Tax Return
- Form CT-1040ES Declaration of Estimated Tax
- Form CT-2210 Underpayment of Estimated Tax
- Form CT-6251 Alternative Minimum Tax
- Form CT-SI Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources
- Form CT-1040 Resident Income Tax Return
- Form CT-1040 Resident Income Tax Return Instructions
- Form CT-1040NF/PY Nonresident and Part-Year Resident Return
Form CT-1040NF/PY Nonresident and Part-Year Resident Return Instructions - Form CT-1040V Electronic Filing Payment Voucher
- Form CT-1040X Amended Income Tax Return
- Form CT-1040ES Declaration of Estimated Tax
- Form CT-2210 Underpayment of Estimated Tax
- Form CT-6251 Alternative Minimum Tax
- Form CT-SI Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources
