Modern accountants for UK small businesses Your numbers, finally explained.

We take the bookkeeping, tax and deadlines off your plate, and explain your numbers in plain English. You’ll always know where you stand, and get your time back for the work only you can do.

You’ll speak to Keiran, our founder.AAT licensed. Before Aethon, he worked with hundreds of small businesses across several practices.

  • One fixed monthly fee
  • No joining or exit fees
  • We handle the switch from your accountant

Anything extra, like software setup or catching up a backlog, is quoted upfront.

Under two years old? See our offers for new businesses
A founder leans back in his chair holding a phone showing a tick, with a rising chart on the monitor behind.
  • AAT licensed and regulated
  • ICO ZC182101
  • Company 17284774
  • Works with Xero and QuickBooks, plus your bank feeds and receipt apps

Your time back

Hand over the admin. Keep the decisions.

Bookkeeping, tax returns and Companies House forms take hours you could spend on customers, your team or yourself. Once we’re on board, the work splits like this.

We take care of

  • Bookkeeping and bank reconciliations
  • VAT returns, if you're registered
  • Year-end accounts and Corporation Tax
  • Your self-assessment tax return
  • Companies House filings
  • Payroll, if you have a team (quoted extra)

You focus on

  • Winning and looking after customers
  • Pricing, hiring and what to do next, with real numbers in front of you
  • Deciding what to pay yourself, knowing what the business can afford
  • Your evenings and weekends

Shown for a limited company. Sole traders and partnerships get the filings that apply to them.

See every service in detail

The numbers

Six numbers every owner should know.

Your year-end accounts tell you what happened. These tell you why. On Growth and Strategic, your management accounts track the ones that matter for your business, explained in plain English.

  1. Profit

    What the business really made once every cost is counted, not just what landed in the bank.

  2. Cash flow

    When money comes in and goes out, so a quiet month or a big bill doesn't catch you out.

  3. Tax to set aside

    How much of the money in your account is really owed to HMRC, so tax bills don't come as a surprise.

  4. What you can pay yourself

    How much you can safely take out of the business without leaving it short.

  5. Gross margin

    What's left from each sale once its direct costs come out, so you can see which work really pays.

  6. Money owed to you

    Who owes you, how much, and how long they're taking to pay.

See which plans include themSaaS and softwareRun a SaaS or software business? Your numbers look different: MRR, churn and deferred income. See our dedicated service.

Your year with Aethon

Modern systems, with a real person behind them.

Good software does the gathering, reminding and filing, so our time goes on explaining what your numbers mean and what to do next.

  1. Weekly, monthly or quarterly

    Books kept up to date

    Bank feeds and a receipt app bring your transactions in, and we keep them reconciled.

  2. Every month or quarter

    Reports in plain English

    On Growth and Strategic, management accounts with an explanation of what they mean.

  3. Before every deadline

    A reminder, with time to plan

    What's due and when, tax payments included, well before the date.

  4. At your reviews

    Time to talk it through

    Where you are and what's next: once, twice or four times a year, by plan.

  5. At year-end

    Accounts and tax, filed

    Your year-end accounts and tax returns prepared and filed for you.

All year round

  • A named accountant
  • One secure portal for documents and requests
  • Ask as many questions as you like, at no extra cost
  • HMRC handled as your agent
Ask Keiran how it would work for your business

Getting started

Three steps. No surprises.

  1. 1

    Book a free call

    30 minutes with Keiran about your business, your numbers and where you want to take it.

  2. 2

    Get a fixed quote

    One monthly fee, agreed before we start. Reviewed with you every six months, so it follows your business in both directions.

  3. 3

    We take it from there

    We handle the handover from your current accountant, including the paperwork.

Receipts flow along a path to an accountant at a laptop, then to a dashboard that two colleagues review together.

Plans

Every plan gets your filing done. Higher plans add insight.

Your fee depends on your business, so we agree it on your first call: one fixed monthly fee, reviewed with you every six months so it follows your business in both directions. Pay for the year upfront and it stays fixed for the whole year.

Strategic

A true financial partnership.

Your finance team without the headcount. Budgets and forecasts, so you manage against a plan instead of only looking back.

Everything in Growth, plus:

  • Cashflow forecasting
  • Budgeting and variance analysis
  • Full KPI dashboard
  • Supplier payment runs prepared
  • Business review meetings every quarter

Essentials

Core compliance, sorted.

For businesses that need everything filed properly and on time.

What's included:

  • Bookkeeping
  • Year-end accounts and Corporation Tax
  • Directors' self-assessment
  • Confirmation statement
  • VAT returns (if registered)
  • A business review meeting once a year

In every plan

  • Named accountant
  • Client portal, unlimited queries
  • Deadline and payment reminders
  • HMRC correspondence handled

Shown for a limited company. Sole traders and partnerships are covered too, with the filings that apply to them. Optional extras, quoted upfront: a tax planning review, payroll, company formation and cloud accounting setup. Fractional CFO support is available once you've been with us for 12 months.

See every service, plan by plan

New business offers

Just getting going? Start with three months.

Two fixed-price ways in for newer businesses. After three months you move onto our full Growth plan, priced on your first call.

Under 12 months old

First-Year Trial

For businesses under 12 months old, expecting £40k to £250k turnover.

£99a month + VAT

£99 a month + VAT for 3 months, paid upfront. That’s £118.80 a month including VAT if you aren’t VAT registered.

Covering work worth over £750

  • Xero and receipt capture software set up
  • 3 months of bookkeeping
  • Management accounts in month 3
  • A review of where the business is at
Book a call about this offer

1 to 2 years old

Growth Kickstart

For businesses 1 to 2 years old, with £75k to £250k turnover.

From £149a month + VAT

3 months of support from £149 a month + VAT, paid upfront. That’s from £178.80 a month including VAT if you aren’t VAT registered.

Worth over £850

  • Xero and receipt capture software set up
  • 3 months of bookkeeping
  • Management accounts with KPIs in month 3
  • A salary and dividend planning session
  • A review of where the business is at
Book a call about this offer

Your year-end accounts and corporation tax are included once you move onto the full plan. You're covered by a money-back guarantee, as long as you reply quickly, turn up to your meeting, and do your part. Full terms are in the agreement. Both offers are available until 31 December 2026.

Trading for more than two years? You don’t need an offer. Book a call and we’ll handle the switch from your current accountant.

Keiran Hirst, founder of Aethon Accountancy
Keiran Hirst Founder

Who you’ll work with

Swap the feeling for the figures.

Keiran founded Aethon after working across several small-town accountancy practices with hundreds of small businesses. The pattern he saw most often was owners running on a feeling about how the business was doing, rather than the real numbers, and that feeling was often wrong in both directions.

“You didn’t start your business to become a bookkeeper. You do what you’re good at, and I’ll do what I’m good at.”

AAT licensed. You’ll speak to Keiran directly.

Book a call with Keiran

FAQs

Straight answers before you book.

Something else on your mind? Ask Keiran on your free call.

Book a free call
How does switching from my current accountant work?

You let your current accountant know you're moving, and we handle the rest: the professional clearance letter, getting your records across, and moving your HMRC agent authorisations over. If your current accountant has a notice period, we'll plan the switch around it so nothing falls through the gap.

How much does it cost?

One fixed monthly fee, agreed before we start. It's based on the size of your business and what you need from us, not on hours. There's no joining fee and no exit fee. Software setup, like moving you onto Xero, is quoted upfront if you need it. Anything extra, like catching up a backlog, is agreed before we start. We review your fee with you every six months, so it follows your business in both directions. If you pay for the year upfront, your fee is fixed for that whole year.

Who do you work with?

Owner-run UK businesses that want to understand their numbers, not just file them: limited companies, sole traders and partnerships, from their first year of trading onwards. We also run a dedicated service for SaaS and software businesses.

Is there a minimum term? Can I leave?

On our monthly plans, you can leave by giving three months' notice, and there's no exit fee. New business offers and pay-yearly plans cover the period you've paid for, and your proposal sets out the terms. Whenever you leave, we'll hand everything over properly so your next accountant can pick up cleanly.

Do I need to change my software?

We work in Xero and QuickBooks. If you already use one, we'll work in yours. If you're on spreadsheets or something else, Keiran can move you onto cloud accounting as a quoted extra, with bank feeds and a receipt app set up so most of your transactions reach us without you sending anything.

What are management accounts, and do I need them?

A regular report showing your profit, your cash and the numbers that matter for your business, with a plain-English explanation of what it means. They're included in Growth and Strategic, monthly or quarterly depending on what you need. If you only need your filing done, Essentials covers that.

How easy is it to get hold of you?

You'll have a named accountant and a secure client portal, where you can ask as many questions as you like at no extra cost. You'll also have review meetings through the year. If you'd like us to research and set something up for you, we'll quote it first.

Do you only work with local businesses?

No. We're based in Bradford and work online with businesses across the UK, so it doesn't matter where you are.

Free 30-minute call

Let’s look at your numbers together.

Tell Keiran about your business and what’s worrying you. If we’re a good fit, you’ll get one fixed monthly fee, agreed before anything starts.

Book your free 30-minute call
  • One fixed monthly fee
  • No joining or exit fees
  • We handle the switch from your accountant

Anything extra, like software setup or catching up a backlog, is quoted upfront.

Before you pick a time

A few quick questions, so Keiran can come prepared.

How long have you been trading?
Roughly what's your turnover over the last 12 months?
Do you have an accountant right now?

We only use your answers to prepare for the call.