You're running a business, not an accounts department. You want your bookkeeping, tax returns and VAT handled properly, without booking a half-day off to sit in someone's office. That's what online accounting services are for.
This guide explains what an online accountant actually does, how the cloud-based model works, what it costs, and how Making Tax Digital (MTD) changes things. It's written for sole traders, limited company directors and landlords who want a clear answer before they commit.
We'll keep it practical. Every tax figure here is for the 2025/26 tax year and comes from HMRC, with sources listed at the end.
What are online accounting services?
Online accounting services are accounting and tax services delivered remotely, using cloud accounting software rather than face-to-face meetings and paper files.
In practice that means a qualified accountant manages your books, returns and compliance, while you and they both work in the same online software. You photograph receipts on your phone, your bank feeds in automatically, and your accountant sees the live picture without you couriering anything over.
It's the same regulated work a high-street accountant does. The difference is the delivery: digital records, remote support, and software that keeps you ready for HMRC's digital filing rules.
A typical service covers bookkeeping support, your annual return (Self Assessment or Corporation Tax), VAT returns if you're registered, and ongoing tax advice. Payroll is usually a bolt-on.
Who are online accountants right for?
Online accounting suits most small businesses that are comfortable doing a little admin on an app. It tends to fit:
- Sole traders and freelancers filing Self Assessment.
- Limited company directors who need Corporation Tax, a director's return and salary/dividend planning. See our limited companies accounting page.
- Contractors weighing up IR35 and the most tax-efficient way to pay themselves. We cover this on our contractors page.
- Landlords with property income to report, including those approaching MTD for Income Tax. More on our landlords page.
- Ecommerce sellers juggling platform fees, VAT and stock.
If you have hundreds of transactions a month, complex inventory, or you genuinely don't have time to use an app, you may want a fuller bookkeeping service on top. That's a normal add-on, not a dealbreaker.
What's usually included, and what isn't?
Most online accounting packages bundle the day-to-day compliance into one monthly fee.
Typically included:
- A named, qualified accountant as your point of contact.
- Cloud accounting software access.
- Your annual return: Self Assessment for sole traders and landlords, or Corporation Tax plus the director's return for companies.
- VAT returns if you're VAT-registered, filed digitally.
- Year-end accounts and the confirmation statement for companies.
- Ongoing email and phone support, plus tax planning.
Usually charged separately, or not offered:
- Payroll, which is normally a monthly add-on once you have employees.
- Heavy manual bookkeeping, if you want someone to enter every transaction rather than using the app yourself.
- Statutory audit, which only larger companies need and which is specialist work.
- R&D tax credit claims and legal advice, which are specialist services in their own right.
The reason the core fee can be lower than a traditional firm's is the model: no office overheads, and software doing the routine calculations. You're paying for the accountant's judgement, not their reception.
For the regulated services Zmartly provides directly, see our bookkeeping, Self Assessment and Corporation Tax service pages.
How does Making Tax Digital affect you?
Making Tax Digital is HMRC's programme to move tax record-keeping and filing into compatible software. A good online accountant keeps you compliant as each phase lands.
MTD for VAT already applies to all VAT-registered businesses. You must keep digital records and file VAT returns through MTD-compatible software.
MTD for Income Tax is being phased in for the self-employed and landlords:
| Phase | Starts | Who it applies to (qualifying income) |
|---|---|---|
| Phase 1 | 6 April 2026 | Over £50,000 (based on 2024/25) |
| Phase 2 | 6 April 2027 | Over £30,000 (based on 2025/26) |
| Phase 3 | 6 April 2028 | Over £20,000 (based on 2026/27) |
Once you're in scope, you keep digital records and send HMRC quarterly updates, then a final declaration after the tax year. "Qualifying income" means gross income from self-employment and property, not profit, so it's worth checking where you sit well before the start date.
The VAT registration threshold is £90,000 of taxable turnover for 2025/26. If you cross it, registration is compulsory and MTD for VAT comes with it.
How much do online accounting services cost?
Pricing depends on your structure and complexity, not your postcode. Fees are usually fixed monthly, which makes budgeting predictable.
As a rough guide, sole traders and landlords sit at the lower end, and limited companies a little higher because there's more to file (Corporation Tax, the director's return and the confirmation statement). Adding payroll, VAT or full manual bookkeeping increases the fee.
What matters more than the headline number is what's inside it. A low monthly price that charges extra for your tax return, your VAT and every phone call can cost more than an all-inclusive fee. Ask for a written breakdown of what's included before you compare prices.
You can size up your own position with our calculators, for example the self-employed tax calculator or, for directors, the dividend tax calculator.
Can an online accountant make me more tax-efficient?
Often, yes, though the savings depend entirely on your circumstances. The value isn't a magic trick; it's claiming what you're entitled to and structuring things sensibly.
Common examples include claiming all your allowable expenses, using the right VAT scheme, planning capital purchases, and for company directors, balancing salary and dividends.
Illustrative example: a limited company director's pay mix (2025/26)
Aisha runs a small consultancy through a limited company and wants to take £50,270 from it tax-efficiently. She takes a salary equal to the personal allowance and the rest as dividends.
- Salary: £12,570. That matches the personal allowance for 2025/26, so there's no income tax on it.
- Dividends: £37,700. The first £500 is covered by the dividend allowance. The remaining £37,200 falls within the basic rate band and is taxed at the dividend ordinary rate of 8.75%, which is £3,255.
- Employer National Insurance at 15% applies to the salary above the £5,000 secondary threshold: (£12,570 − £5,000) × 15% = £1,135.50. Eligible employers may be able to cover this with the Employment Allowance, but a single-director company with no other employees usually cannot, so we've left it in.
Her total income of £50,270 sits right at the higher rate threshold, so all the dividends stay in the basic band. This is a simplified illustration, not advice: the right mix depends on your profits, other income, pension plans and whether Employment Allowance applies. We work this through properly for each client.
Want this run for your own numbers? Try the dividend tax calculator, or talk to us.
How do I choose a good online accountant?
A few checks separate a solid firm from a risky one.
- Qualified and regulated. Look for ACA, ACCA, CTA or AAT, and a firm regulated by a professional body. Qualified accountants carry professional indemnity insurance and keep up with the rules.
- Clear, fixed pricing. Published or quoted in writing, with a list of what's included. Vague "contact us" pricing and per-call charges are a warning sign.
- MTD-ready software included or clearly priced. You need compatible software for VAT now and Income Tax soon.
- Responsive support. Ask what their typical response time is and whether support is UK-based.
- Relevant experience. A firm that knows your sector, whether that's contractors, landlords or ecommerce, spots the reliefs a generalist might miss.
Don't be shy about asking for the accountant's qualification and the firm's regulatory body before you sign.
FAQs
What are online accounting services for small businesses in the UK?
They're accounting and tax services delivered remotely through cloud software by a qualified accountant. A typical service covers bookkeeping support, your annual return (Self Assessment or Corporation Tax), VAT returns if you're registered, year-end accounts for companies, and ongoing tax advice. Payroll is usually an add-on.
How much do online accounting services cost?
Fees are usually a fixed monthly amount that depends on your business structure and complexity rather than your location. Sole traders and landlords generally sit at the lower end, and limited companies higher because there's more to file. What matters is checking exactly what's included, so a low headline price doesn't hide extra charges for your return, VAT and support.
Do I have to use Making Tax Digital?
If you're VAT-registered, MTD for VAT already applies: you must keep digital records and file through compatible software. MTD for Income Tax is being phased in for the self-employed and landlords, starting 6 April 2026 for those with qualifying income over £50,000, then over £30,000 from April 2027 and over £20,000 from April 2028. A good online accountant gets you ready before your phase starts.
Is an online accountant as qualified as a high-street one?
It should be. The qualifications and regulation are the same; only the delivery differs. Look for ACA, ACCA, CTA or AAT and a firm regulated by a professional body, and ask for the accountant's credentials before you commit.
Will an online accountant do my bookkeeping for me?
Many packages give you cloud software and review your records, with you doing the day-to-day entry on an app (photographing receipts, letting the bank feed in). If you'd rather hand over full manual bookkeeping, that's usually available as an add-on, which suits higher transaction volumes or anyone short on time.
When do I need to register for VAT?
You must register if your taxable turnover goes over the VAT registration threshold, which is £90,000 for 2025/26, or if you expect to cross it in the next 30 days. Once registered, MTD for VAT applies. An accountant can also advise whether voluntary registration makes sense below the threshold.
Talk to a bookkeeping specialist →
Talk to a Zmartly accountant
If you'd like your bookkeeping, returns and VAT handled by a qualified UK accountant, with no office visits and clear monthly pricing, we can help. Book a free 20-minute call with a Zmartly accountant and we'll talk through what your business needs.
