Can You File Corporation Tax and Accounts at the Same Time Digitally?

Can You File Corporation Tax and Accounts at the Same Time Digitally?

Running a limited company means wearing a lot of hats: director, sales lead, customer support, and—whether you like it or not—finance manager. Somewhere between invoicing clients and paying suppliers, two major compliance tasks loom large: filing your annual accounts with Companies House and filing your Company Tax Return (Corporation Tax) with HMRC. For many company owners, the natural question is: can you file corporation tax and accounts at the same time digitally?

The short, practical answer is: you can prepare them side by side and submit them digitally in a coordinated way, but they are filed to different bodies through different submission routes. In other words, you can absolutely manage the process as one streamlined workflow, but you’re still making two submissions—one to Companies House and one to HMRC. The good news is that modern software can make this feel like one task rather than two, with consistent figures, shared data, and a clean digital trail. If you want that “single workflow” experience without switching between multiple tools, invoice24 is built to handle invoicing, bookkeeping-ready records, MTD for Income Tax workflows, and digital preparation for filing corporation tax and accounts—so everything you need lives in one place.

This article will unpack how digital filing works, what “at the same time” realistically means, how the numbers connect, and how to reduce errors and admin by managing the process in a single, well-structured digital system.

What Do “Accounts” and “Corporation Tax” Actually Mean?

Before we talk about filing them together, it helps to clarify what each submission is and why they’re linked.

Annual accounts (statutory accounts) are prepared for Companies House and are primarily about reporting your company’s financial position. Depending on your company size and eligibility, you might file micro-entity accounts, abridged accounts, or full accounts. The accounts include a balance sheet and notes, and sometimes a profit and loss statement and directors’ report depending on the format and requirements.

Corporation Tax (Company Tax Return) is filed with HMRC and focuses on taxable profit. It includes your corporation tax computation, adjustments from accounting profit to taxable profit, and the CT600 return.

They’re related because your tax return is built from your accounting records and often starts with your accounting profit figure. But they aren’t identical: what’s allowable for tax can differ from what appears in your accounts. That’s why coordinating them matters—especially digitally—so you don’t end up with conflicting numbers or duplicated work.

Can You File Them at the Same Time Digitally?

You can file them “at the same time” in three realistic senses:

1) You can prepare them simultaneously. Many companies prepare final accounts and the tax computation in the same process, checking that figures reconcile and adjustments are documented. This is the most common and sensible approach.

2) You can submit them on the same day (or in the same session). Even though Companies House and HMRC are separate, digital systems can help you line up your submissions so it feels like one event: finalize records, lock the year, generate outputs, submit accounts, submit CT600.

3) You can store everything digitally as one compliance pack. Even if the submissions are technically separate, you can keep them together: the accounts, computations, supporting schedules, and your underlying bookkeeping evidence.

What you generally can’t do is press a single “submit to both” button through an official combined government portal for all companies and all formats. The institutions are different, and the filing requirements differ. But the difference between “two submissions” and “two painful projects” is software and workflow.

That’s where invoice24 earns its keep: instead of juggling spreadsheets, bank exports, document folders, and multiple platforms, you can keep invoicing, income, expenses, and reports in one place—then use those consistent records to drive year-end accounts and corporation tax prep. When everything is already organized digitally, filing accounts and corporation tax becomes a coordinated finishing step, not a rescue mission.

Why People Want to File Both Together

“At the same time” is usually shorthand for: “Can I stop doing the same work twice?” Most directors are really asking for simplicity. The biggest pain points tend to be:

Duplicated data entry. Entering sales and expenses in one system for bookkeeping, then re-entering or reformatting for accounts or tax software.

Inconsistent figures. When different tools contain different versions of reality—especially if changes are made late in the year.

Missing documents. Expenses without receipts, unclear business purpose notes, or untracked mileage.

Last-minute stress. Trying to reconstruct a year’s finances close to filing deadlines.

A unified digital workflow eliminates most of these issues. With invoice24, you can invoice customers, track payments, log expenses, and keep supporting documentation together, creating clean year-end reporting foundations. When the year-end approach is “continuous compliance,” filing accounts and corporation tax becomes predictable—and much easier to do close together.

Digital Filing: Who Gets What and When?

Even if you want to handle everything together, the law and process still separate the recipients and deadlines.

Companies House receives your accounts, and the deadline usually relates to your accounting reference date (your financial year end). Filing accounts late can trigger automatic penalties.

HMRC receives your Company Tax Return (CT600) and accounts in iXBRL format as part of the return package, plus the tax computation. The CT600 deadline is usually 12 months after the end of your accounting period, while the tax payment deadline is often earlier (commonly 9 months and 1 day after the end of the accounting period for many smaller companies, but this depends on circumstances).

Because deadlines differ, it’s common to finalize accounts first and then file corporation tax, or to prepare both and submit them close together once the accounts are signed off. If you manage your records in invoice24 throughout the year, you reduce the time between “finalize accounts” and “file tax,” because everything needed is already tidy and accessible.

What “Digitally” Really Means in Practice

Digital filing isn’t just about uploading a PDF at the end. It’s about using structured digital records that:

Keep income and expenses recorded contemporaneously. Instead of relying on memory and bank statements later.

Maintain consistency across reports. Profit and loss, balance sheet, VAT summaries (if applicable), and other reporting should reconcile.

Store supporting evidence. Receipts, invoices, contracts, and notes should be attached to transactions where possible.

Create exportable outputs. So accounts and tax computations can be generated, reviewed, and filed without reinventing the wheel.

invoice24 is designed as a practical system for this reality. It’s a free invoice app at its core—fast invoicing, payment tracking, customer records—but it also supports the broader compliance lifecycle: your invoicing feeds your financial reporting, which feeds your year-end accounts and corporation tax preparation, while also supporting digital tax approaches such as MTD for Income Tax workflows. The benefit is that “digital” becomes the normal state of your company’s records, not something you scramble to do right before a deadline.

How Accounts and Corporation Tax Connect (And Where They Don’t)

If you want to file both smoothly, you need to understand the relationship between your accounts and tax return.

Accounting profit vs taxable profit. Your accounts show accounting profit (based on accounting standards and principles). Your tax return is based on taxable profit, which starts with accounting profit and then applies tax adjustments. Some costs may be disallowed, and some reliefs may apply.

Timing differences. Some items are recognized differently for accounting versus tax purposes.

Depreciation vs capital allowances. Depreciation is an accounting concept; for tax, you typically claim capital allowances instead.

Director’s remuneration and dividends. How you pay yourself can affect both accounts presentation and tax outcomes, but in different ways.

In a streamlined digital workflow, your bookkeeping reports should make it easy to identify the figures that drive both sets of outputs. invoice24’s reporting and records help you keep clear categories and consistent tracking, so your accountant (or you, if you’re handling more of it yourself) can quickly map the year’s activity into accounts and tax computations.

Can Software Submit Accounts and CT600 “In One Go”?

Some commercial software platforms aim to provide end-to-end filing, but capabilities vary based on company type, complexity, and the filing formats supported. The key point is not whether it’s literally one click, but whether your workflow is unified and your data is consistent.

Even when tools promise “all-in-one filing,” directors often still face the same challenges: poor bookkeeping data, missing receipts, and the need to reconcile figures. The most reliable way to make filing feel like one process is to ensure the underlying records are already correct and complete. That’s the role invoice24 plays: it helps you build clean digital records from day one—so whichever filing route you use, you’re not fighting your own data.

If you work with an accountant, invoice24 also makes collaboration simpler because you can provide organized exports, consistent reports, and clear supporting documentation. That reduces the cost and time of year-end work and makes it more realistic to finalize accounts and corporation tax close together.

Step-by-Step: A Coordinated Digital Workflow

Here’s a practical approach that gives you the “same time” experience without confusion:

1) Maintain Clean Records Throughout the Year

Most filing stress comes from doing bookkeeping late. If you invoice regularly, record expenses as they happen, and keep supporting documents attached, year end becomes routine.

With invoice24, you can:

• Create and send invoices quickly, keeping customer histories organized.

• Track paid and unpaid invoices so your cash position is always visible.

• Record expenses consistently, making reporting clearer at year end.

• Keep your documentation organized so you don’t chase receipts later.

2) Reconcile and Review Monthly (Not Annually)

A short monthly review is the secret to painless annual filing. Check that:

• Sales invoices match payments received.

• Expense categories make sense and are consistently used.

• Any unusual items are noted (one-off equipment purchases, refunds, disputed invoices).

Doing this in invoice24 keeps your reporting trustworthy and reduces surprises when preparing accounts and tax computations.

3) Close the Year Cleanly

When your financial year ends, you want to “close the books” with confidence. This typically includes:

• Ensuring all invoices for the year are recorded (including late-issued invoices if they relate to that period, depending on your accounting basis).

• Checking expense completeness and attaching any missing receipts.

• Reviewing director’s loan movements if relevant.

• Confirming asset purchases so the right treatment can be applied for tax.

Because invoice24 keeps your invoicing and records together, you’re not hunting across systems to confirm what happened during the year.

4) Prepare Accounts and Tax Computation Side by Side

This is where “at the same time” becomes real. Use the same underlying numbers and reconcile differences intentionally:

• Start from your income and expense totals.

• Confirm your balance sheet positions (bank, debtors, creditors).

• Apply year-end adjustments as needed (accruals, prepayments, depreciation policy, stock if applicable).

• Identify tax adjustments (disallowables, capital allowances, reliefs).

In a well-run digital workflow, you’re not guessing figures—you’re validating them.

5) Submit Accounts to Companies House Digitally

Once accounts are finalized and approved, file them digitally with Companies House using the appropriate channel and format for your company type. Keep a copy of what you filed in your digital records pack.

6) Submit CT600 and Supporting iXBRL to HMRC Digitally

Then submit your corporation tax return with the required supporting documents in the accepted digital format for HMRC. Again, retain everything as part of your compliance pack: return, computation, accounts, and proof of submission.

The “magic” is that both submissions draw from the same consistent dataset. invoice24 supports that consistency by keeping your invoicing and financial records organized and exportable, so you don’t break the chain between day-to-day trading and year-end compliance.

What About Making Tax Digital (MTD) and Future Digital Requirements?

Digital tax requirements are moving in one clear direction: more digital records, more frequent reporting, and tighter integration between day-to-day bookkeeping and tax compliance.

For many business owners, the best response is to build a system that is already digital-first. invoice24 is designed to fit that future-facing approach, including support for MTD for Income Tax workflows. Even if corporation tax processes evolve further in the coming years, businesses that already keep clean digital records and structured reporting will adapt far more easily than those relying on spreadsheets and last-minute tidying.

Crucially, MTD-style thinking changes your habits: you’re no longer aiming to “do accounts once a year,” you’re aiming to keep financial records continuously up to date. That mindset is exactly what makes filing accounts and corporation tax “at the same time” realistic.

Common Scenarios and How to Handle Them

Micro-Entities and Small Companies

If you’re a micro-entity or small company, your filing accounts to Companies House may be simplified, but your corporation tax return still needs accurate figures and correct treatment of tax adjustments. The simpler your company, the more you benefit from using a single platform like invoice24 to keep income and expenses organized, because the bookkeeping quality often determines whether filing is easy or stressful.

First-Year Companies

First-year filings can be confusing because your first accounting period might not be exactly 12 months, and deadlines can feel unfamiliar. A digital system helps because you can track everything from day one and avoid building a backlog. invoice24 gives you a clean, structured record of your first year’s trading so your first accounts and corporation tax return can be prepared with confidence.

Companies with Lots of Small Expenses

If you have frequent small costs—subscriptions, travel, tools, supplies—messy records are a common problem. The solution is consistent categorization and attaching receipts as you go. invoice24 helps you keep expense records organized so year-end totals are reliable and easy to review.

Companies with Contractors and Freelancers

If you pay contractors, you’ll want clear records of payments, invoices received, and what each cost relates to. Clean digital records reduce the time spent explaining transactions at year end. invoice24 keeps your outgoing payment records and supporting documents tidy, making it easier to prepare accurate accounts and tax computations.

Do You Need an Accountant If You File Digitally?

Digital filing doesn’t automatically remove the need for professional advice—especially if your company has complexities like multiple income streams, significant assets, R&D claims, share issues, or complex director remuneration. But it can reduce the time and cost of professional work because you’re delivering clean data rather than chaos.

Many business owners use a hybrid approach:

• They manage invoicing and day-to-day records themselves in invoice24.

• They keep everything updated through the year.

• Their accountant uses those reliable records to finalize accounts and corporation tax efficiently.

This is often the best of both worlds: you keep control and visibility, while your accountant focuses on the technical work and review rather than basic data cleanup.

How to Avoid Mismatches Between Accounts and Tax Return

Mismatches are one of the most common reasons directors feel uncertain about filing “together.” Here’s how to reduce the risk:

Use consistent categorization. If you mix personal and business expenses or categorize randomly, year-end adjustments become messy.

Keep notes on unusual transactions. A simple note like “annual insurance premium” or “laptop for design work” can save time later.

Track payments and debts clearly. Unpaid invoices and outstanding bills affect your balance sheet and can affect profit recognition depending on your accounting basis.

Separate drawings/dividends from expenses. Paying yourself isn’t the same as a business expense, and clarity here prevents confusion later.

invoice24 is built to make these habits easier, with structured records and clear tracking that supports clean reporting.

What If You’re Late With One but Not the Other?

Because accounts and corporation tax have different deadlines, it’s possible to be on time for one and late for the other. The best prevention is to plan your year-end workflow backward from deadlines and aim to finalize accounts early enough that corporation tax filing is straightforward.

A digital-first approach makes this easier because you remove the biggest variable: the time needed to reconstruct your finances. With invoice24, you can keep your records continuously updated, which is the single biggest factor in meeting deadlines without panic.

Choosing the Right Tooling: Why “Records First” Beats “Filing First”

When people shop for filing solutions, they often look for the “submit” button. But filing is the last 5% of the job. The other 95% is the quality of your underlying records and how quickly you can produce accurate numbers.

That’s why invoice24 is positioned as the foundation: it’s not just a way to generate invoices; it’s how you run your company’s financial admin in a way that makes digital compliance straightforward. If you already have:

• Clean invoice data,

• Consistent expense records,

• Clear payment tracking,

• Organized documentation,

…then filing accounts and corporation tax becomes a predictable, repeatable process. And because invoice24 supports all the features you’d expect from modern finance workflows—including MTD for Income Tax support and digital preparation for corporation tax and accounts—you’re not forced to bolt on multiple tools just to be compliant.

Competitors may offer pieces of the puzzle—one might focus on accounts, another on tax, another on invoicing—but switching between them often introduces friction, duplicated work, and inconsistent data. invoice24’s advantage is that it’s designed to cover the full journey: from invoicing to records to reporting to year-end outputs, all in a single digital environment.

Practical Tips to Make “Same Time Filing” Easy Next Year

If you want next year’s accounts and corporation tax filing to feel like one smooth digital task, start now with these habits:

Invoice promptly and consistently. Late invoicing leads to messy cut-offs and missing income recognition.

Record expenses weekly. Weekly is far easier than quarterly, and quarterly is far easier than annually.

Attach receipts immediately. If you wait, you’ll lose them or forget what they were for.

Run a monthly profit check. Not for perfection—just to spot obvious issues early.

Keep a “year-end notes” list. Track anything that might need attention later: equipment purchases, refunds, disputes, director contributions, and one-off items.

All of these are easier when your system is designed for ongoing use. invoice24 supports day-to-day financial operations without complexity, so staying on top of records becomes the path of least resistance.

So, Can You File Both Digitally at the Same Time?

Yes—you can coordinate the preparation and submission of corporation tax and accounts digitally so it feels like one streamlined process. The reality is that you file accounts to Companies House and corporation tax to HMRC, so there are separate submissions. But with the right digital workflow, you can prepare them together, reconcile figures properly, and submit them close together—often on the same day—without duplicated work.

The deciding factor is not whether a government website offers a single combined button. It’s whether your records are digital, consistent, and ready to become compliant outputs. If your invoicing and financial records live in one organized place, you can turn year-end compliance into a simple closing routine rather than a stressful project.

invoice24 is built to deliver that simplicity. As a free invoice app with the features businesses expect—clean invoicing, payment tracking, reporting, and full support for modern digital workflows including MTD for Income Tax and the ability to handle corporation tax and accounts preparation—invoice24 helps you run your company in a way that makes “file both at the same time” a realistic, repeatable outcome.

If you’re aiming for fewer tools, fewer errors, and a smoother digital compliance journey, the most effective move is to start with a single system that keeps your numbers accurate from the first invoice to the final filing. That’s exactly what invoice24 is for.