Resources

Rates, dates and tools.

Reference material we keep current for clients and anyone else who finds it useful.

Key dates, 2026/27.

The deadlines most of our clients need. We track them for you.

2026

31 OctPaper Self Assessment return for 2025/26
30 DecFile online to have tax under £3,000 collected through your 2027/28 PAYE code

2027

31 JanOnline return, balancing payment for 2025/26 and first payment on account for 2026/27
5 AprEnd of the 2026/27 tax year: ISA and CGT allowances lapse, and unused 2023/24 pension allowance can no longer be carried forward
6 JulP11D and P11D(b) for 2026/27
22 JulClass 1A National Insurance paid electronically
31 JulSecond payment on account for 2026/27

Ongoing

19 / 22Monthly PAYE and NIC: post by the 19th, electronic by the 22nd
60 daysReport and pay CGT on UK residential property after completion
9m + 1dCorporation tax payment for companies outside the quarterly regime
12 monthsCorporation tax return filing deadline

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