Key Filing Deadlines You Should Never Miss – Integrity Spheres Tax & Accounting

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Key Filing Deadlines You Should Never Miss

Missing a filing deadline is not a small mistake it can cause problems, penalties and stress. Whether you run a business or a limited company staying on top of important dates is crucial for keeping your business in order and financially healthy.

Lets look at the deadlines you should never miss:

1. Self Assessment Deadlines

If you work for yourself or have income you need to do Self Assessment.

For the year 2025 /2026

* 31 October 2026. Deadline for paper tax return

* 31 January 2027. Deadline for tax return and tax payment

Missing these deadlines can lead to automatic penalties from HM Revenue and Customs (HMRC) starting from £100 and increasing over time. Self Assessment deadlines are critical so make sure you keep track of them.

2. Corporation Tax Deadlines

If you have a company, Corporation Tax is a big deal.

* Payment deadline – 9 months and 1 day after your accounting period ends

* Company tax return (Form CT600) Filing deadline. 12 Months after your accounting period ends

Late payments can lead to charges while late filings can trigger penalties even if you don’t owe any tax. Corporation Tax deadlines are essential for companies.

3. VAT Returns

If your business is registered for VAT you’ll typically need to submit returns every quarter.

* Deadlines are usually 1 month and 7 days after the end of your VAT period

Missing VAT deadlines can result in charges and penalties from HMRC, which can add up quickly if you delay.

4. PAYE & Payroll Submissions

If you have employees you must report payroll information in time.

* Submissions are made on or before each payday through Full Payment Submission (FPS)

* Payments to HMRC are typically due by the 19TH of the following tax month (if paying electronically)

Late submissions or payments can result in penalties and issues for both your business and your employees. PAYE and payroll submissions are critical for businesses with employees.

5. Confirmation Statement Deadline

* Due least once every 12 months within 14 days after the end of the 12 – month review period.

Every UK limited company must file a Confirmation Statement to verify company details.

Failing to file can lead to your company being removed from the register at Companies House. Confirmation Statement deadlines are vital for companies.

Final Thoughts

Keeping track of these deadlines isn’t about avoiding fines, it’s about running a smooth business. Late filings can damage your reputation, disrupt cash flow and create problems. To stay on track, set reminders using accounting software. Work with an accountant. When your compliance is, under control you can focus on growing your business.

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