01/10/2026
September brings Corporation Tax deadlines for companies with a 31 December year end - both the tax payment and the accounts filing fall on the 30th.
PAYE and NIC payments are due by the 19th (postal) or 22nd (electronic) as always.
If you've got a December year end and haven't started your accounts yet, now is the time to get in touch, leaving it until the month it's due rarely ends well.