Here are the latest Key Dates for this tax term.
1st - Annual corporation tax due for companies with year ending nine months and a day previously, eg tax due 1 November 2017 for year ending 31 January 2017.
14th - Quarterly instalment of corporation tax due for large companies (depending on accounting year end).
19th - Pay PAYE/NIC and CIS deductions for period ending 5th of the month if not paying electronically. Submit CIS contractors’ monthly return.
22nd - PAYE/NIC and CIS deductions paid electronically should have cleared into HMRC bank account.
30th/31st - Submit CT600 for year ending 12 months previously. Last day to amend CT600 for year ending 24 months previously. File accounts with Companies House for private companies with year ending nine months earlier and for public companies with year ending six months earlier.
If the due date for payment falls on a weekend or bank holiday, payment must be made by the previous working day.