Date What’s Due
 

1/01

 

Corporation tax payment for year to 31/3/17 (unless quarterly instalments apply)

 

19/01

 

PAYE & NIC deductions, and CIS return and tax, for month to 5/01/18 (due 22/01 if you pay electronically)

 

31/01

 

Deadline for Self-Assessment tax return for 2016/17 if filed online. Also the due date for 2016/17 balancing payment and 50% payment on account of 2017/18 tax.

 

1/02

 

Corporation tax payment for year to 30/4/17 (unless quarterly instalments apply)

 

19/02

 

PAYE & NIC deductions, and CIS return and tax, for month to 5/02/18 (due 22/02 if you pay electronically)