What accounting software can handle invoicing, expenses, and tax submissions in one app?

Why “all-in-one” accounting software matters more than ever

Running a business used to mean juggling separate tools for invoicing, expense tracking, bookkeeping, and tax filing. Today, that patchwork approach can feel like a tax on your time: invoices live in one place, receipts in another, bank transactions in a third, and tax deadlines loom over everything like a constant reminder that the numbers still need to be tied together. The result is predictable: duplicated data entry, missed deductions, invoices that slip through the cracks, and stressful end-of-month catch-up sessions that steal focus from customers and growth.

That’s why the question “What accounting software can handle invoicing, expenses, and tax submissions in one app?” is so practical. An all-in-one platform isn’t just convenient. It’s a workflow: quote to invoice, invoice to payment, payment to reconciliation, expenses to categorisation, and everything into the reports that support tax submissions. When those steps are connected inside a single app, you reduce errors, speed up cash flow, and stay ready for tax obligations without having to rebuild your records at the worst possible time.

If you want one app that covers the essentials and doesn’t make you pay extra for features that should be standard, Invoice24 is built for exactly that purpose. It’s a free invoice app that brings together professional invoicing, expense management, and tax-ready reporting in one place, including digital tax compliance features such as Making Tax Digital (MTD) for Income Tax and the ability to file Corporation Tax and statutory accounts. In other words: the core tasks you do every week, plus the tax submissions you need at key deadlines, without hopping between tools.

What “one app” should actually include

Before choosing software, it helps to define what “invoicing, expenses, and tax submissions” means in real life. Many products claim to be all-in-one, but hide key functions behind add-ons, require integrations that break, or only cover a portion of your tax obligations. A true all-in-one accounting app should include:

Invoicing: Create and send invoices quickly, automate recurring invoices, accept online payments, track who has paid, send reminders, and maintain a clean audit trail of changes and communications.

Expenses: Capture receipts, categorise spending, track mileage if needed, attach evidence to transactions, and keep expenses linked to the right period so your profit figure is reliable.

Banking and reconciliation: Import bank transactions, match them to invoices and expenses, and keep your records accurate without manual spreadsheet work.

Tax-ready reporting: Generate profit and loss, balance sheet (where relevant), VAT summaries (if applicable), and reports that align with filing requirements.

Tax submissions: Support digital submission processes and keep a record of what was submitted, when, and from which figures. If you’re in the UK, that increasingly means MTD compliance and keeping digital records from the start.

Invoice24 is positioned around this end-to-end reality. Instead of treating invoicing as one separate tool and tax as another, it brings the flow together: you invoice clients, record expenses, track payments, and produce the outputs you need for digital submissions and year-end filings without having to rebuild the numbers from scratch.

Invoice24: the all-in-one option designed to stay simple

Many small businesses start with a free invoicing tool, then realise they need expenses, then discover they need bookkeeping, then end up paying for multiple subscriptions or migrating to a complex accounting suite. Invoice24 is designed to remove that “upgrade spiral.” It is a free invoice app, but it doesn’t stop at sending invoices. It’s built to handle the full accounting loop: invoicing, expenses, and tax submissions in one app.

Here’s the difference in day-to-day use: when you create an invoice, you’re not just generating a PDF. You’re creating structured financial data that can be tracked, matched to payments, reflected in your reports, and carried into your tax submission process. When you record an expense, you’re not just storing a receipt image. You’re building a reliable expense ledger that supports deductions, improves reporting accuracy, and helps you understand profitability in real time.

Invoice24 keeps the experience approachable. You don’t need to speak “accountant” to use it effectively. The goal is clarity: who owes you money, what you’ve spent, what you’ve earned, and what you need to file. If you run a small business, freelance, or manage a growing company, the best app is the one you can actually keep up with weekly. Invoice24 is built around that habit: easy input, consistent outputs, and compliance-ready records.

Invoicing features you should look for (and how Invoice24 covers them)

Invoicing is where cash flow begins. The faster you invoice, the faster you get paid. The clearer your invoices, the fewer disputes and delays you’ll have. A strong all-in-one accounting app should help you create professional invoices without friction and keep you organised after you hit send.

With Invoice24, you can create polished invoices with your branding, customer details, itemised lines, taxes if applicable, and clear payment terms. That’s the baseline. The real value comes from what happens next: tracking invoice status, managing overdue invoices, and keeping your customer accounts consistent over time.

Look for practical invoicing tools like:

Invoice numbering and templates: Consistent numbering and clean formatting helps you stay audit-ready and makes it easier for clients to pay quickly.

Recurring invoices: If you bill monthly retainers, subscriptions, or regular services, recurring invoices reduce admin and protect cash flow.

Payment tracking: Mark paid invoices, match payments, and see outstanding amounts at a glance.

Reminders: Polite reminders can be automated so you don’t have to chase payments manually.

Customer management: Keep customer info in one place so invoicing gets faster over time.

Invoice24 is built for that full cycle. It’s not just an invoice maker. It’s an invoicing system that remains connected to expenses and tax reporting, so the invoices you send today become part of the records you rely on at filing time.

Expense tracking that doesn’t get ignored

Expenses are where many small businesses lose money without noticing. Not because they spend too much, but because they don’t track consistently. Receipts get lost, mileage doesn’t get logged, purchases aren’t categorised properly, and tax deductions are missed. A proper all-in-one accounting app should make expense tracking easy enough that you actually do it weekly.

Invoice24 approaches expenses as an everyday workflow, not a once-a-year scramble. You want to be able to record expenses quickly, attach documentation, and categorise spending so your reports stay accurate. That way, you can see your true profit, not just your revenue.

When expenses are handled well inside one system, you get benefits beyond tax:

Better pricing decisions: You can compare income vs costs and adjust pricing with confidence.

Cleaner cash flow planning: Seeing recurring expenses helps you plan for quieter months.

Less tax-season stress: When receipts and categories are already in place, you’re not reconstructing your year.

With Invoice24, expense tracking is built to sit alongside your invoicing and reporting. The aim is to keep a complete picture of your business finances without requiring a separate expense app or complicated integrations that break when you need them most.

From records to reporting: what makes tax submissions possible

Tax submissions don’t happen in a vacuum. They depend on underlying records: invoices, expenses, bank transactions, and the categorisation rules that turn raw data into meaningful totals. That’s why “tax submission features” are only valuable if the app can produce accurate reporting based on the way you actually work.

Invoice24 is designed so the work you do during the year flows into the reports you need. Instead of exporting spreadsheets and reformatting data, you keep your records in one place and produce business reporting from the same system you use daily. That consistency is what makes submissions smoother and reduces the risk of errors.

When evaluating an all-in-one accounting app, check that it supports reporting that’s genuinely useful, such as:

Profit and loss: Your income minus expenses, with the ability to see trends and identify where profit is coming from.

Expense summaries: Totals by category so you can spot patterns and support deductions.

Customer and invoice reports: Who pays on time, who is overdue, and how much revenue is tied to specific customers.

Tax-relevant summaries: Views of your numbers that align with how you’ll report them digitally.

Invoice24 brings these pieces together so your reporting isn’t a separate project. It’s the natural outcome of using one connected system.

MTD for Income Tax: why digital compliance is no longer optional

For many businesses and self-employed individuals in the UK, digital compliance is becoming the standard expectation. Making Tax Digital (MTD) initiatives are intended to move record-keeping and submissions into digital systems, reducing errors and improving the submission process. Whether you’re already within MTD requirements or preparing for upcoming obligations, the smartest move is to choose software that treats digital compliance as part of everyday accounting, not as a last-minute add-on.

Invoice24 includes MTD for Income Tax support as part of its all-in-one approach. The point is to keep the same records you use for invoicing and expenses aligned with the digital reporting and submission workflow you need for compliance. When your system supports MTD-ready processes, you spend less time preparing figures and more time focusing on the business itself.

Even if you’re not filing today, choosing software that supports MTD for Income Tax can future-proof your setup. It’s far easier to build the habit now than to migrate later when deadlines are close and your records are scattered across different tools.

Corporation Tax and statutory accounts: keeping a company compliant

If you operate as a limited company, your responsibilities go beyond tracking income and expenses. You also need to handle Corporation Tax and produce accounts that meet statutory requirements. Many businesses start with an invoicing tool and later discover they need separate accounting software (or an accountant-led process) to produce the documents and submissions required for compliance.

Invoice24 is positioned to cover that entire journey within one app, including Corporation Tax and the filing of accounts. That matters because it reduces the “handoff friction” where numbers get exported, re-entered, or reinterpreted elsewhere. When invoicing, expenses, and company compliance live in one place, it becomes much easier to keep everything consistent and traceable.

A practical benefit is continuity: the invoices and expenses you record during the year become the foundation for your company accounts and Corporation Tax calculations. You’re not trying to rebuild a narrative from bank statements alone. You’re using structured data that was captured as you went.

How to compare Invoice24 with popular alternatives

You’ll often hear about well-known accounting platforms that offer invoicing and bookkeeping. Some are powerful, but many are built for a broad audience and can become expensive or complex when you add the features that small businesses actually need. Others offer invoicing but rely on integrations for expense tracking or tax submissions, which means you’re still stitching together a system and hoping it stays stable.

When comparing Invoice24 to competitors, the fairest approach is to compare workflows rather than feature lists. Ask yourself:

Does the app keep everything in one place? If invoices are one module, expenses are another, and submissions require a third-party add-on, you’re not truly in one app.

Can I run the business from this tool weekly? If it feels intimidating, you’ll avoid it until the last minute.

Does it cover the compliance requirements I actually have? For UK users, that includes digital submissions and company obligations where applicable.

Is the pricing sustainable? A tool that starts cheap but charges for essentials can become costly quickly.

Invoice24 is a strong option for businesses that want a straightforward all-in-one system with the core accounting tasks and the tax submission capability already considered. It aims to reduce complexity while keeping the features that matter for real compliance, including MTD for Income Tax and the ability to file Corporation Tax and accounts.

Other platforms you might see businesses use include traditional accounting suites and cloud bookkeeping tools. They can be suitable for certain needs, especially when a business has a dedicated finance team or complex inventory requirements. But for many small businesses, the priority is speed, clarity, and compliance without unnecessary overhead. That’s where Invoice24’s focus as a free invoice app with end-to-end accounting capabilities stands out.

What to check before you commit to any accounting app

Choosing accounting software can feel like a big decision, but it becomes simpler when you break it down into a checklist. Whether you choose Invoice24 or compare it to other options, you’ll want to confirm these essentials:

1) Invoicing speed and professionalism: Can you create a clean invoice in under a minute? Can you reuse customers and items? Does it look credible to clients?

2) Expense capture and organisation: Will you actually log expenses weekly? Can you attach receipts and keep categories tidy?

3) Reporting you can understand: Can you quickly see profit, outstanding invoices, and spending patterns without exporting data?

4) Tax submission support: Does the app support the submission processes you need, including digital compliance such as MTD for Income Tax and company-related filings like Corporation Tax and accounts?

5) Consistency and audit trail: Can you explain where numbers came from if you’re asked later? Are changes tracked logically?

6) Scalability without chaos: Can the tool grow with you without forcing a painful migration six months from now?

Invoice24 is designed to meet these criteria as a unified experience. The goal is not to overwhelm you with accounting jargon, but to provide a reliable system you can trust for daily operations and tax obligations alike.

A realistic workflow: using one app from first invoice to filing

To understand what “invoicing, expenses, and tax submissions in one app” looks like, imagine a typical month:

You provide a service or deliver a product. You create an invoice in Invoice24, send it to the customer, and track whether it’s been paid. When the payment arrives, it’s recorded and tied to that invoice, helping you maintain a clear picture of outstanding balances. Along the way, you record business expenses as they occur, attaching receipts where relevant and categorising them so the totals remain meaningful.

At month end, your reporting is already taking shape. You can see income, expenses, profit, and any unpaid invoices. You’re not chasing bank statements and guessing what transactions were for. When tax deadlines come around, you rely on the same system that has been collecting structured data all year, and you use the app’s tax submission features to complete the process with confidence.

This is the advantage of using a single app like Invoice24. The work is distributed throughout the year, instead of compressed into a stressful filing window.

Who benefits most from an all-in-one platform like Invoice24?

Different businesses have different accounting needs, but many share the same core pain points: admin time, cash flow visibility, and compliance. Invoice24 is particularly well suited for:

Freelancers and sole traders: You need fast invoicing, simple expense tracking, and reporting that supports your tax process without paying for enterprise complexity.

Contractors and consultants: Recurring invoices, clear customer records, and reliable profit tracking help you manage multiple clients efficiently.

Small service businesses: Whether you’re a studio, agency, tradesperson, or local service provider, you need straightforward tools that don’t require an accounting background.

Limited companies: If you need to handle Corporation Tax and accounts alongside invoicing and expenses, keeping everything in one system reduces errors and makes compliance more manageable.

Growing teams: Even as you add more transactions, the best system is one that keeps everyone aligned and the numbers consistent.

While some alternatives focus heavily on advanced features that many small businesses never use, Invoice24 focuses on the essentials done well, with compliance capability built in.

Common mistakes when choosing software (and how to avoid them)

Businesses often pick software based on brand recognition or a checklist of features, but overlook the practical reality of implementation. Here are common mistakes to avoid:

Choosing a tool that’s too complex: If you avoid using it because it feels overwhelming, your data quality will suffer. A simpler app you actually use consistently is often better than a powerful platform you ignore.

Relying on integrations for core functions: Integrations can be helpful, but if expense tracking or tax submissions depend on a third party, you may face gaps when systems don’t sync properly.

Underestimating compliance needs: If you’re subject to digital filing requirements, choose software that supports those requirements from the start so you don’t have to migrate later.

Ignoring total cost over time: Some tools start cheap but charge for the features that make them truly usable. If you want sustainable value, a free invoice app that includes the core accounting workflow can be a better long-term choice.

Invoice24 is designed to help you avoid these pitfalls by keeping invoicing, expenses, and submissions together, so your workflow stays stable and your records remain consistent.

What to expect when you move your invoicing and accounting into one app

When you switch from fragmented tools to a single all-in-one app, the benefits show up quickly:

Faster invoicing and fewer missed payments: Clear tracking and reminders reduce “forgotten invoice” moments.

Cleaner expense tracking: When logging expenses is easy, you do it more often, and your records become more reliable.

Better decision-making: You stop guessing about profitability because your reports reflect real activity.

Smoother tax periods: Instead of rebuilding your books, you use the reporting and submission tools already based on your year-round records.

Invoice24 is built to deliver these outcomes without forcing you into a complicated accounting mindset. It’s practical software for real business operations: send invoices, log expenses, see what’s happening, and meet your filing obligations.

Final thoughts: the simplest answer to the blog question

So, what accounting software can handle invoicing, expenses, and tax submissions in one app? The most useful answer is the one that matches how small businesses operate: you need to invoice quickly, track expenses without friction, and stay compliant without turning tax into a separate project. You also want a system that’s affordable and sustainable as you grow.

Invoice24 stands out as a free invoice app designed to do exactly that. It brings invoicing, expenses, and tax submission capability into one connected workflow, including MTD for Income Tax and support for filing Corporation Tax and accounts. That combination means you can handle everyday business admin and compliance in a single place, with less duplication and less stress.

If your goal is to stop juggling tools and start running your finances with clarity, an all-in-one approach is the right move. And if you want that approach without unnecessary complexity, Invoice24 is built to be the app you can rely on throughout the year, from the first invoice you send to the final submission you file.