When to hire an accountant for your small business

Published Friday 15 May 2026

Table of contents

• Do you need an accountant for your small business?
• Why hire an accountant for your small business
• What can an accountant do for your small business?
• When should you hire an accountant?
• Bookkeeping vs. accounting: what's the difference?
• Can you do your own small business accounting?
• How much does an accountant cost?
• What to look for when choosing an accountant
• How accountants and Xero work together
• Find the right accountant for your small business
• FAQs on hiring an accountant for small business

Key takeaways

• You're not legally required to hire an accountant for your small business in the UK, but working with one can save you time, reduce costly errors and help you stay compliant with HMRC and Companies House obligations.
• An accountant does more than file your tax return. They can advise on business structure, manage payroll, support funding applications and help you make better financial decisions as you grow.
• Costs vary depending on your needs, but most small businesses pay between £75 and £300 per month on a retainer; hourly rates typically range from £50 to £200.
• Cloud accounting software like Xero makes collaboration with your accountant faster and more transparent, giving both of you real-time access to the same financial data.

Do you need an accountant for your small business?

One of the first questions many small business owners ask is whether they actually need an accountant. The short answer is that there's no legal requirement to hire one in the UK, but for most businesses it's a smart move.

If you're a sole trader, you're responsible for submitting a Self Assessment tax return to HMRC each year. If you run a limited company, you also need to file annual accounts with Companies House, submit a Corporation Tax return and keep statutory records. Getting any of these wrong can lead to penalties and interest charges.

While you can handle these tasks yourself, an accountant brings expertise that helps you stay compliant, claim all the tax relief you're entitled to and avoid mistakes that could prove expensive down the line.

Why hire an accountant for your small business

Hiring an accountant isn't just about ticking compliance boxes. The right accountant becomes a trusted adviser who helps your business run more smoothly and grow sustainably.

Here are some of the main benefits of working with an accountant:

• Save time: Delegating financial admin frees you up to focus on running and growing your business.
• Improve accuracy: Professional accountants reduce the risk of errors in your tax returns, bookkeeping and financial reports.
• Make better decisions: With clear, up-to-date financial data, you can spot trends, manage cash flow and plan ahead with confidence.
• Reduce your tax bill: An accountant identifies allowable expenses, reliefs and allowances you might otherwise miss.
• Gain peace of mind: Knowing your finances are in order lets you concentrate on what you do best.

For a deeper look at managing your finances, read the small business accounting guide.

What can an accountant do for your small business?

Accountants offer a broad range of services, and the scope of support you need will depend on the size and complexity of your business. Most small business accountants can help with the following:

• Tax compliance: Preparing and filing Self Assessment, Corporation Tax and VAT returns on time.
• Bookkeeping oversight: Reviewing your records, reconciling bank transactions and making sure everything is accurate.
• Financial reporting: Producing profit and loss statements, balance sheets and cash flow reports so you can see how your business is performing.
• Payroll: Calculating wages, managing PAYE deductions, issuing payslips and handling pension auto-enrolment.
• Business advice: Offering guidance on pricing, growth planning, business structure and tax-efficient strategies.

To learn more about the full scope of what a professional can offer, see the guide on what accountants do.

When should you hire an accountant?

There's no single right time to bring an accountant on board. However, certain milestones and situations make professional support especially valuable.

When you're writing a business plan

A solid business plan needs realistic financial projections. An accountant can help you build credible forecasts, set budgets and identify the costs you might overlook.

If you're just getting started, the free business plan template gives you a useful framework for structuring your plan.

When choosing your business structure

Deciding whether to operate as a sole trader, limited company or partnership affects your tax obligations, personal liability and admin workload. An accountant can walk you through the pros and cons of each option and help you register correctly from day one.

Your chosen structure also determines how Making Tax Digital rules apply to you. Getting the right advice early can save you from having to restructure later. For tips on selecting the right professional, see the guide on how to choose an accountant.

When you're ready to delegate and focus on growth

Many business owners start out managing their own books, but there comes a point where the time spent on financial admin would be better spent on growing the business. If you're spending evenings and weekends catching up on receipts and invoices, it's a clear sign you could benefit from professional help.

Even if you prefer to handle day-to-day bookkeeping yourself, an accountant can review your work and flag issues before they become problems. For practical tips on keeping your records tidy, take a look at the bookkeeping for small business guide.

When dealing with taxes and government compliance

Tax deadlines and compliance requirements pile up quickly. You may need to submit quarterly VAT returns, file an annual Self Assessment or Corporation Tax return, prepare statutory accounts and meet Companies House filing deadlines.

If you employ staff, you also need to run payroll accurately, handle PAYE and National Insurance contributions, and manage workplace pension auto-enrolment. An accountant keeps track of all these deadlines and makes sure nothing gets missed.

When your finances feel overwhelming

Late-paying customers, rising costs and unpredictable cash flow can make your finances feel chaotic. An accountant can set up systems to chase outstanding invoices, monitor your accounts receivable and keep tabs on the key metrics that matter to your business. Tools like cash flow forecasting software can help you stay on top of your numbers between meetings.

With dashboards and regular reporting, you get a clear picture of where your money is going and where adjustments are needed. That visibility helps you make confident decisions instead of guessing.

When you're scaling your business

Growth brings complexity. You might be hiring your first employees, expanding into new markets, reviewing your pricing or launching new products. Each of these steps has financial implications.

An accountant can run cash flow analysis, model different scenarios and advise on the timing of major investments. Having a financial expert in your corner makes it easier to scale without overextending.

When applying for business funding

Lenders and investors want to see well-prepared financial statements, realistic revenue projections and a clear picture of your business's financial health. An accountant can prepare these documents to a professional standard, compare loan options and help you put your best case forward.

Whether you're applying for a bank loan, seeking venture capital or exploring government grants, having accurate, up-to-date figures gives your application credibility.

When facing a tax audit

Receiving an enquiry letter from HMRC can be stressful. An accountant who already knows your business and records can respond on your behalf, gather the required documentation and represent you throughout the process.

Some accountants also offer tax investigation insurance, which covers their professional fees if you're selected for an HMRC investigation. Keeping a clear audit trail in your accounting software makes the process much smoother. HMRC is the non-ministerial department responsible for tax collection in the UK.

Bookkeeping vs. accounting: what's the difference?

The terms bookkeeping and accounting are often used interchangeably, but they cover different parts of your financial management. Understanding the distinction helps you decide what kind of support you need.

Bookkeeping is the day-to-day recording of financial transactions: logging sales, purchases, receipts and payments, reconciling bank statements and keeping your records up to date. For a step-by-step overview, see the small business bookkeeping guide. It's the foundation that everything else sits on.

Accounting takes those records further. It includes analysing your financial data, producing statutory accounts, forecasting future performance, filing tax returns and advising on strategy. A chartered accountant (ACA, ACCA) is qualified to sign off statutory accounts and provide formal tax advice, while a bookkeeper focuses on keeping your transactional records accurate.

Many small businesses benefit from having both: a bookkeeper to handle the daily data entry and a chartered accountant to oversee compliance and provide strategic advice. If you're considering whether to hire a bookkeeper, it's worth understanding where their role ends and an accountant's begins. To explore this further, read the guide on why you need an accountant or bookkeeper.

Can you do your own small business accounting?

Yes, you can manage your own accounting, and many sole traders and micro-businesses do exactly that. Cloud accounting software has made the process more accessible than ever, with features like automatic bank feeds, invoicing and tax calculations.

However, doing it yourself comes with risks. Errors in your tax return can lead to penalties from HMRC. Missing deadlines can result in fines. And time spent on bookkeeping and compliance is time you're not spending on your customers or growing your business.

You also need to be aware of Making Tax Digital requirements. VAT-registered businesses must already keep digital records and submit VAT returns through compatible software. The programme is expanding to cover Income Tax Self Assessment for qualifying taxpayers from April 2026. You can learn more about Making Tax Digital and tax returns to see how this affects your filing obligations. Even if you handle your own books, professional oversight from an accountant is still recommended to ensure your records meet compliance standards.

How much does an accountant cost?

Accountancy fees vary widely depending on the services you need and the complexity of your business. Here are the most common pricing models:

• Hourly rate: Typically £50 to £200 per hour, depending on the accountant's qualifications and location.
• Monthly retainer: A fixed monthly fee, usually between £75 and £300, covering an agreed scope of work such as bookkeeping, VAT returns and year-end accounts.
• Project-based fee: A one-off charge for a specific task, such as preparing your annual tax return or setting up a new company.

Several factors influence what you'll pay:

• Qualifications: Chartered accountants (ACA, ACCA) typically charge more than unqualified bookkeepers or AAT-qualified technicians.
• Location: Fees tend to be higher in London and the South East compared with other parts of the UK.
• Business complexity: A limited company with employees, multiple revenue streams and VAT registration costs more to manage than a simple sole trader setup.
• Software usage: Accountants who use cloud software like Xero can often work more efficiently, which may reduce your fees.

What to look for when choosing an accountant

Choosing the right accountant is a decision worth taking your time over. The right fit can make a real difference to how your business runs.

Here are the key criteria to consider:

• Qualifications: Look for a recognised professional body membership such as ACA (ICAEW), ACCA, CIMA or AAT. These qualifications demonstrate that the accountant meets professional standards and follows a code of ethics.
• Industry experience: An accountant who understands your sector will be familiar with common challenges, tax reliefs and benchmarks relevant to your business.
• Technology skills: Choose someone who uses modern cloud accounting software. This means you can collaborate in real time and access your data from anywhere.
• Communication style: Your accountant should explain things in plain language and be responsive when you have questions. A good working relationship depends on clear, regular communication.
• Service scope: Make sure their offering matches your needs, whether that's basic tax filing or a full advisory service covering payroll, VAT and strategic planning.
• Professional references: A qualified accountant can provide references for mortgage applications, business loan applications and other financial assessments, which can be valuable as your business grows.

You can search for Xero-certified advisors in your area through the find an advisor directory.

How accountants and Xero work together

When your accountant uses the same cloud platform as you, the whole relationship becomes more productive. Xero gives both you and your accountant real-time access to the same set of financial data, which means fewer emails back and forth, faster responses and more accurate advice.

Here's how the partnership works in practice:

• Real-time access: Your accountant can log in and review your books at any time, without waiting for you to send spreadsheets or documents.
• Faster turnaround: With up-to-date data always available, your accountant can prepare tax returns and reports more quickly.
• Greater accuracy: Automatic bank feeds and reconciliation reduce manual data entry, which lowers the risk of errors.
• Better advice: When your accountant can see your numbers in real time, they can spot issues early and offer timely, relevant guidance.
• Making Tax Digital readiness: Xero is fully compatible with Making Tax Digital for VAT and is preparing for Income Tax Self Assessment requirements, keeping you and your accountant ahead of compliance changes.
• App integrations: Xero connects to over 1,000 business apps for invoicing, payments, payroll, inventory and more, so your financial data flows seamlessly across the tools you already use.

To find an accountant or bookkeeper who works with Xero, visit the advisor directory.

Find the right accountant for your small business

The right accountant helps you stay compliant, make smarter financial decisions and free up your time to focus on growing your business. Pair that expertise with cloud accounting software and you'll have a clear, shared view of your finances at all times.

Try Xero and see how easy it is to manage your books and collaborate with your accountant. Get one month free.

FAQs on hiring an accountant for small business

Below you'll find answers to frequently asked questions about hiring an accountant for small business.

Do I legally need an accountant for my small business?

No, there's no legal requirement to hire an accountant in the UK. However, you are legally responsible for meeting your tax obligations, filing accurate returns and keeping proper records. An accountant helps you fulfil these duties correctly and avoid penalties.

How much should an accountant cost for a small business?

Most small businesses pay between £75 and £300 per month on a retainer, depending on the services included. Hourly rates typically range from £50 to £200. The cost depends on your business structure, complexity and the accountant's qualifications.

Is hiring an accountant worth it for a small business?

For most small businesses, yes. A good accountant saves you time, reduces errors, identifies tax savings and helps you make better financial decisions. The money you save on tax alone often outweighs the cost of their fees.

What type of accountant is best for a small business?

A chartered accountant (ACA or ACCA) or a certified accountant with small business experience is usually the best fit. Look for someone who uses cloud software, understands your industry and communicates clearly.

Do I need a full-time accountant or can I hire one part-time?

Most small businesses don't need a full-time accountant. A part-time arrangement, whether on a monthly retainer, quarterly check-in or annual engagement, is usually sufficient. You can scale up the support as your business grows.

Can an accountant help me get a mortgage or business loan?

Yes. Accountants can prepare certified accounts, profit projections and reference letters that lenders and mortgage providers often require. Having professionally prepared financial statements strengthens your application and speeds up the approval process.