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What is a company’s date of incorporation?

  • 4 min read
  • Last updated 17 Apr 2025

The date of incorporation is your company’s official birthday. It marks the day your business is registered and becomes a real, legal thing. 🎉

In this guide, we’ll explain what it means, why it matters and how to find yours. Let’s get into it! 

So, what is it?

In more official terms, the date of incorporation refers to when a company is officially registered with Companies House. From that point on, your business legally exists and can operate under its registered name. 

It’s also when a company can start conducting business, open a bank account, register for taxes and all the other fun grown-up stuff that comes with running a company.

Can you choose your company’s date of incorporation?

Not exactly. You can decide when to submit your application, but the actual inc date is determined by when your application is approved by Companies House.

That said, timing still matters. You can plan your application around things like the start of your financial year, a big launch or tax planning. A little forward thinking can go a long way when it comes to making life (and your accounts) easier. 📅

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Why is the date of incorporation important?

It’s more than just an administrative formality, it’s essential for your company’s future. Here’s why:

  • Marks the start of your legal existence: it’s the day your company officially becomes a legal entity. Now you’re the real deal! ✅
  • Determines your financial year: this date sets the clock for your company’s financial year, which affects tax filing deadlines and reporting.
  • Eligibility for tax schemes: it helps define your company’s eligibility for various tax reliefs and legal schemes.
  • Compliance: your company will need to comply with legal and regulatory requirements from the moment it’s incorporated.

Understanding the importance of this date ensures that you’re on top of your obligations and prepared for what’s to come. 🧐

How to find your company’s date of incorporation

Finding your company’s date of incorporation is simpler than you might think. If you’re in the UK, Companies House has you covered.  

Just head to their website, enter your company name or registration number and voilà, you’ll have the official date at your fingertips. It’s that easy!

You’ll also find your inc date on your certificate of incorporation – the official document issued by Companies House when your business is registered.

Can you change your company’s date of incorporation? 

Nope! The inc date is fixed. It’s the official legal record of when your company was formed and it can’t be changed.

However, if your business merges with another or you form a brand new legal entity (like converting from a limited company to a different structure), a new date of incorporation would be created for the new company. But the original inc date for the old company will stay the same. 

Can a company start trading on their incorporation date?

Yes, a company can start trading right after its date of incorporation, but there are a few things to consider before diving in: 

  • Business Bank Account: you’ll need a dedicated business bank account to handle transactions and separate your business finances from personal ones.
  • Tax Registration: ensure your company is properly registered with HMRC to handle VAT, Corporation Tax and other necessary filings.
  • Compliance Checks: make sure you’re fully compliant with any industry-specific regulations and legal requirements.
  • Record Keeping: set up a solid accounting system to track income, expenses and profits from day one.

But remember, you don’t have to start trading right away. If you’re not quite ready, you can register your company as dormant (a.k.a inactive) with HMRC. 

This is handy if you’re reserving a company name, getting your ducks in a row before launching or simply not planning to trade just yet. 

A company can stay dormant indefinitely for Corporation Tax purposes, just make sure you notify HMRC when things change.

When everything’s ready, you can hit the ground running. 🏃‍♂️💨

Date of incorporation vs. business start date

The date of incorporation is when your company legally comes into existence. On the other hand, your business start date is when you actually start operating – providing services, selling products or making sales. 📈

These dates can be the same, but they often aren’t. Knowing both is important for things like tax filing and your financial year.

Tax implications of your company’s incorporation date

The inc date is important for tax purposes as well. Here’s how:

  • Sets your accounting period: the date marks the start of your company’s accounting period, affecting when your tax returns and financial statements are due.
  • Tax rates: the date of incorporation also determines which tax rates apply to your company during its first accounting period. Make sure you’re aware of when your accounting periods fall to ensure you’re paying the correct rates.
  • Tax relief eligibility: your incorporation date affects when your company can start claiming tax reliefs and other benefits, like R&D credits or capital allowances. 📊

Understanding the impact of this date helps you stay on top of tax deadlines and maximise any available tax benefits. 

Starting strong

Setting up your company is a big moment and the inc date is crucial. It affects everything from tax deadlines to legal obligations. Know your date, stay on top of your responsibilities and set your business up for success from the start. And if you need a helping hand along the way, our accountants are here to support you.

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