Running a UK business means juggling dozens of compliance deadlines throughout the year. Miss one, and you face automatic penalties, damage to your credit rating, and potential legal action. Stay on top of them all, and you maintain a healthy, compliant business that can focus on growth rather than firefighting regulatory problems.
The challenge is that 2026 brings more deadlines than ever before. Between new Companies House verification requirements, increased filing fees, stricter HMRC reporting rules, and the usual annual obligations, keeping track of everything manually is virtually impossible.
This comprehensive compliance calendar breaks down every critical deadline you need to know in 2026 and shows you how mobile notifications can transform compliance from a constant worry into an automated, stress-free process.
January to March 2026: Quarter One Compliance Priorities
January 31, 2026: Self-Assessment Tax Return Deadline If you are a company director taking dividends or have other personal income, your self-assessment tax return for the 2024/2025 tax year must be filed by January 31, 2026. This is also the deadline for paying any tax owed. Late filing triggers immediate £100 penalties, with additional charges accumulating over time.
February 2026: Companies House Fee Increases Take Effect From February 2026, Companies House implements new fee structures. Incorporation costs rise from £12 to approximately £18 to £20 for online filings. Confirmation statements increase from £34 to around £40 to £45. Budget for these higher costs when planning your February and subsequent filings.
Ongoing: Quarterly VAT Returns If your company is VAT registered, you have quarterly VAT return deadlines. For most businesses, these fall on the last day of the month following each quarter end. January 31, April 30, July 31, and October 31 are typical VAT deadlines, though your specific dates depend on your VAT accounting period.
April to June 2026: Quarter Two Critical Dates
April 5, 2026: End of Tax Year The 2025/2026 tax year ends on April 5, 2026. This date affects personal tax planning, pension contributions, ISA allowances, and capital gains tax calculations. While not a filing deadline itself, it is a crucial date for financial planning.
April 19, 2026: Corporation Tax Payment Deadline (Example) Corporation tax must be paid within nine months and one day after your company’s accounting period ends. If your financial year ended on July 31, 2025, your corporation tax payment is due by April 19, 2026. Your specific deadline depends on your company’s year-end date.
May 19, 2026: PAYE and National Insurance Payment If you employ staff or pay yourself a salary, you must pay PAYE and National Insurance to HMRC by the 19th of each month. This is a monthly obligation that continues throughout 2026. Electronic payments must clear by this date, so initiate transfers several days early.
June 30, 2026: Annual Accounts Deadline (Example) Companies with a September 30, 2025 financial year end must file their annual accounts by June 30, 2026. Your specific deadline is nine months after your year-end date. Missing this triggers automatic penalties starting at £150 and escalating rapidly.
July to September 2026: Mid-Year Compliance Focus
July 6, 2026: Forms P11D Deadline If your company provides employees with benefits in kind such as company cars, private medical insurance, or interest-free loans, you must submit P11D forms to HMRC by July 6, 2026. This reports the taxable value of all benefits provided during the previous tax year.
July 19, 2026: Class 1A National Insurance Payment Following the P11D submissions, you must pay Class 1A National Insurance on employee benefits by July 19, 2026. Calculate this carefully to avoid underpayment penalties.
September 30, 2026: Confirmation Statement Example Deadline If you filed your last confirmation statement on September 30, 2025, your next one is due exactly 12 months later on September 30, 2026. Every company has its own unique confirmation statement cycle based on incorporation date or last filing date.
October to December 2026: Year-End Compliance Rush
October 5, 2026: Self-Assessment Registration Deadline If you became a company director or need to file self-assessment for the first time in the 2025/2026 tax year, you must register with HMRC by October 5, 2026. Missing this deadline can complicate your tax filing and trigger penalties.
November 2026: Mandatory Director ID Verification Deadline All company directors appointed before the verification system launched must complete their identity verification by November 2026. This is one of the most critical deadlines of the year. Unverified directors cannot file documents with Companies House after this date.
December 31, 2026: Annual Accounts Deadline (Example) Companies with March 31, 2026 financial year ends must file accounts by December 31, 2026. The Christmas period makes this deadline particularly challenging, as accountants are busy and delays are common. File early to avoid year-end stress.
The Problem with Manual Compliance Tracking
Most business owners start with good intentions. They create spreadsheets, set calendar reminders, or rely on their accountants to manage deadlines. Unfortunately, these manual systems fail more often than they succeed.
Calendar reminders get dismissed in busy moments and forgotten. Spreadsheets become outdated when deadlines shift or new requirements emerge. Accountants manage hundreds of clients and cannot always provide individual deadline reminders for every obligation.
You change phones and lose your reminders. Your company structure changes, creating new filing requirements you do not anticipate. Regulations change, introducing deadlines you were not tracking before.
What you need is an intelligent, automated system that adapts to your specific circumstances, tracks all your deadlines simultaneously, and ensures nothing falls through the cracks.
Mobile Notifications: The Modern Solution to Compliance Management
The UK Companies House On The Go mobile app transforms compliance management from a manual headache into an automated, reliable system that works in the background while you focus on running your business.
Comprehensive Deadline Tracking The app automatically tracks all your Companies House deadlines including annual accounts, confirmation statements, and the critical November 2026 identity verification deadline. Every obligation is monitored without you needing to manually enter dates or update calendars.
Smart Push Notifications Receive timely alerts directly to your smartphone well before each deadline. The app sends multiple reminders, starting weeks in advance and escalating as deadlines approach. You will never miss a deadline because you have plenty of warning and multiple opportunities to take action.
Customizable Alert Preferences Set how far in advance you want to receive notifications. Some directors prefer two-month advance warnings for complex filings like annual accounts. Others want weekly reminders for routine obligations. Customize the app to match your working style.
Multi-Company Management Managing multiple businesses? The app displays all your companies and their respective deadlines in one unified dashboard. See which entities need immediate attention and which are safely current. Perfect for portfolio directors, accountants, and company secretaries.
Real-Time Company Information Search any UK company instantly and access complete filing histories, director information, and registered details. Use this for due diligence, competitive research, or checking your own company status on the go.
Verification Status Tracking Track your identity verification status and store your verification code securely within the app. Never worry about losing this critical information when you need to file documents.
Download the UK Companies House On The Go App Today
Stop juggling multiple calendars, spreadsheets, and reminder systems. Consolidate all your UK business compliance obligations into one powerful mobile app.
App Store: https://apps.apple.com/in/app/uk-companies-house-on-the-go/id6743302358
Google Play: https://play.google.com/store/apps/details?id=com.companiesonthe.go
Take Control of Your 2026 Compliance
The compliance calendar for 2026 is more demanding than ever before. New verification requirements, increased fees, and stricter enforcement mean the margin for error has disappeared.
You can either spend your year stressed about deadlines, scrambling at the last minute, and risking penalties, or you can automate the entire process with intelligent mobile notifications that keep you perpetually ahead of the curve.
Download the UK Companies House On The Go app now and transform compliance from your biggest worry into your most automated, reliable business process. Your future self will thank you.
