- 14 July 2018 (23rd July 2018 for online payment and filing):
P30 Monthly Return and payment for June 2018
- 19 July 2018 (23rd July 2018 for online payment and filing):
Bi-monthly VAT 3 Return and payment for the period May/June 2018
- 21 July 2018 (23 July 2018 for online payment and filing):
Corporation Tax Return CT 1 and final payment for companies with accounting periods ending 31 October 2017
- 21 July 2018 (23rd July 2018 for online payment and filing):
Preliminary Corporation Tax due (where liability is less than €200,000) for accounting periods ending 31st August 2018
- 21 July 2018:
Form 46G for companies with accounting periods ending 31st October 2017