London Construction Accountants

[ Tax Compliance Assistant ]

UK tax deadlines, explained clearly.

Ask about Self Assessment, CT600, CIS, VAT, payroll or Companies House deadlines. This assistant gives general guidance — for a formal review, book a call with our team.

Hello — I'm the UK tax compliance assistant. Ask me about filing deadlines, CIS, VAT, corporation tax or self assessment, and I'll walk you through what's due and when.

General guidance only — not formal tax advice

LCA
London Construction Accountants

Specialist chartered accountants for the UK construction sector. Tax returns, balance sheets and P&L statements engineered with structural precision.

© 2026 London Construction Accountants

Registered in England · Companies House No. 09727669

HMRC Registered Agents

◢ 31 JAN — Self assessment deadline◢ 31 MAR — CT600 Q4 (year-end Dec)◢ 30 JUN — First CT payment on account◢ 31 OCT — Paper self assessment deadline◢ 31 JAN — Self assessment deadline◢ 31 MAR — CT600 Q4 (year-end Dec)◢ 30 JUN — First CT payment on account◢ 31 OCT — Paper self assessment deadline◢ 31 JAN — Self assessment deadline◢ 31 MAR — CT600 Q4 (year-end Dec)◢ 30 JUN — First CT payment on account◢ 31 OCT — Paper self assessment deadline