Daily Junction.mobi portalPersonal Finance · April 5, 2026 · Marcus Vale · 5 min
A new UK company's first financial year-end brings several obligations at once. Here is a plain-English checklist covering annual accounts, Companies House filings and Corporation Tax basics.
Setting up a UK limited company is the easy part. The first financial year-end is when the real administrative obligations arrive — often several at once, with deadlines that do not wait. Annual accounts, a tax return, a payment to HMRC and a filing or two at Companies House all land in the same window, and the order in which they fall surprises many first-time directors. This checklist explains, in plain English, what your first year-end involves and how to approach it calmly.
This article is general information, not financial or legal advice. Company filing and tax rules are detailed and change over time. For your own company, check GOV.UK and Companies House guidance or speak to a qualified accountant.
Everything starts with your accounting reference date — the date your company's financial year ends. When you incorporate, Companies House normally sets this as the anniversary of the last day of the month in which the company was formed. So a company set up on 12 June would typically have an accounting reference date of 30 June.
One quirk catches people out: a company's first accounting period is often slightly longer than 12 months, because it runs from the date of incorporation to that first reference date. Your first set of accounts may therefore cover, say, 13 months rather than exactly a year.
Knowing your dates is half the battle. From the year-end, the filing and payment clocks start running, so the first job is simply to write down when your year ends and work backward from there. If you are still at the very start, our guide to how to register a UK company covers what is set up at incorporation and the responsibilities that come with being a director.
Most small companies face three main things around year-end. They go to two different bodies — Companies House (the registrar of companies) and HMRC (the tax authority) — which is part of why it feels like a lot at once.
| Obligation | Filed with | Broad purpose |
|---|---|---|
| Annual accounts | Companies House | Report the company's financial position |
| Company Tax Return (CT600) | HMRC | Calculate Corporation Tax owed |
| Corporation Tax payment | HMRC | Pay the tax due |
| Confirmation statement | Companies House | Confirm company details (own annual cycle) |
Your company must prepare annual accounts (sometimes called statutory accounts) from its financial records, and file them with Companies House. Smaller companies can usually file simpler "small" or "micro-entity" accounts rather than the full set, but they must still meet recognised accounting standards. The accounts give a true and fair picture of the company's finances over the period.
Separately, you must send a Company Tax Return (form CT600) to HMRC. This works out how much Corporation Tax the company owes on its profits. The accounts and the tax return draw on the same underlying figures but are distinct filings going to distinct organisations — a point worth internalising early.
Here is the ordering that trips up first-time directors. For most small companies, *Corporation Tax is generally due nine months and one day after the end of the accounting period — which is usually before the deadline to file the tax return. In other words, you often have to pay* the tax before the return that calculates it is formally due.
The practical lesson: do not wait until the filing deadline to think about the bill. Estimate and set aside the money well in advance, so the payment date does not arrive as a nasty surprise. Setting up a dedicated business bank account from day one makes this far easier, because tax money can be kept clearly separate from working cash.
Slightly apart from the year-end accounts cycle, every company must also file a confirmation statement with Companies House at least once a year. This simply confirms that the registered details — directors, registered office, shareholders and so on — are up to date. It runs on its own annual schedule rather than tracking your accounting date, but it is part of the same family of yearly obligations, so it is worth diarising alongside everything else.
Pulling it together, here is a sensible sequence for a first year-end:
The single biggest stress-reducer is good record-keeping throughout the year, not a frantic scramble at the end. For a broader, ongoing view, our end-of-financial-year checklist is a useful companion, and if you are also approaching the VAT threshold it is worth understanding UK VAT registration and the move toward digital tax reporting.
Using an accountant is not legally required, but many directors do, especially for a first year-end, because accounts and returns must meet specific standards and deadlines and the rules can be intricate. Whether you do it yourself or get help, the authoritative sources for current requirements are GOV.UK and Companies House. Some firms also publish practical primers for new company owners — London consultancy CM Beyer, for example, offers a walkthrough on preparing for your first financial year-end — though such guides are general orientation rather than advice for your specific situation.
Your first financial year-end brings several obligations together: preparing and filing annual accounts with Companies House, sending a Company Tax Return to HMRC, paying Corporation Tax — usually before the return is even due — and keeping your confirmation statement up to date. None of it is especially hard once you know the dates and keep clean records all year, but the deadlines are firm and the ordering is unintuitive. Map your accounting reference date, work backward to your deadlines, set tax money aside early, and lean on GOV.UK, Companies House or a qualified accountant for the specifics. Treated as a planned routine rather than a year-end panic, your first year-end becomes a manageable process, not a crisis.
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