Events for April 15, 2026

Individual Income (7004)

April 15

Individual

Individual Income (7004)

Individual Income (CT-1041-ES)

April 15

State

Individual Income (CT-1041-ES)

Individual Income (1040)

April 15

Individual

Individual Income (1040)

Individual Income (CT-1041 EXT)

April 15

State

Individual Income (CT-1041 EXT)

Corporate Income/Franchise (1120)

April 15

Business

Corporate Income/Franchise (1120)

Individual Income (1041-ES)

April 15

Individual

Individual Income (1041-ES)

Individual Income (CT-1040NR/PY)

April 15

State

Individual Income (CT-1040NR/PY)

Individual Income (1040-ES)

April 15

Individual

Individual Income (1040-ES)

Individual Income (CT-1041)

April 15

State

Individual Income (CT-1041)

Corporate Income/Franchise (7004)

April 15

Business

Corporate Income/Franchise (7004)

Employment (Monthly Employment Deposit)

April 15

Business

Employment (Monthly Employment Deposit)

Pass-Through Income (CT-PET ES)

April 15

State

Pass-Through Income (CT-PET ES)

Individual Income (5471)

April 15

Individual

Individual Income (5471)

Individual Income (CT-1040 ES)

April 15

State

Individual Income (CT-1040 ES)

Corporate Income/Franchise (EFTPS)

April 15

Business

Corporate Income/Franchise (EFTPS)

Employment (Semi-weekly Employment Deposit)

April 15

Business

Employment (Semi-weekly Employment Deposit)

Individual Income (1041)

April 15

Individual

Individual Income (1041)

Individual Income (CT-1040 EXT)

April 15

State

Individual Income (CT-1040 EXT)

Employment (Electronic Deposit)

April 15

Business

Employment (Electronic Deposit)

Employment (1042-S)

April 15

Business

Employment (1042-S)

Individual Income (4868)

April 15

Individual

Individual Income (4868)

Individual Income (CT-1040)

April 15

State

Individual Income (CT-1040)

Employment (Weekly Employment Deposit)

April 15

Business

Employment (Weekly Employment Deposit)

Corporate Income/Franchise (5471)

April 15

Business

Corporate Income/Franchise (5471)