Key Dates for Small Business Owners in 2025: A Quick Guide
As a small business owner, it’s easy to miss important deadlines. Staying on top of tax submissions, changes in legislation, and other key business dates can prevent unnecessary stress. Here’s a handy list of essential dates to keep in mind for 2025, so you can plan and avoid penalties.
Planning ahead can help your business run more smoothly, especially when it comes to finances. Whether you’re filing tax returns or keeping up with policy changes, being proactive about important deadlines ensures you stay compliant and can focus on growing your business.
The following key dates for small business owners are vital. From tax deadlines to shifts in national policies, make sure to note these on your calendar:
Key Dates for 2025
| Date | Event |
| 31 January | Self-Assessment tax return deadline |
| 31 January | Balance of any tax for 2023-24 due |
| 31 January | First payment on account for 2025-26 |
| 31 January | Capital gains tax due |
| 1 February | Changes to alcohol duty rates (draught products) |
| 10-16 February | National Apprenticeship Week |
| 25 March | Spring Budget |
| 8 March | International Women’s Day |
| 1 April | National minimum wage increase |
| 5 April | End of the tax year |
| 6 April | Start of the new tax year, National Insurance reforms, business rates changes, CGT allowance |
| 31 May | P60 deadline |
| 6 July | P11D forms due |
| 31 July | Second payment on account due |
| 15 September | Pension Awareness Day |
| 5 October | Register for Self-Assessment if newly self-employed |
| October (TBC) | Autumn Budget |
| 28 November | Black Friday |
| 1 December | Cyber Monday |
Why These Dates Matter
Missing deadlines can result in hefty fines and penalties, so it’s important to stay on top of these events. For example, the Self-Assessment deadline in January is crucial for avoiding late fees. Similarly, upcoming policy changes, like the National Minimum Wage increase in April, might affect your employee pay rates, so it’s a good idea to plan for these adjustments early.
Staying ahead on things like business budgeting (in January) and pension planning (September) will keep you organised and ready to adapt when changes come into effect.
At WBV Accountants, we’re here to help you navigate these deadlines and manage your finances efficiently. If you need guidance or support with any of these important dates, don’t hesitate to get in touch with our expert team. We’re here to ensure your business stays compliant and thrives in 2025!
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