Last updated: 21 October 2026 | By Chris Barnard, Managing Director, Acenteus Accounting
This article is general guidance for UK businesses and is not financial or tax advice. Salary figures are illustrations and service prices are published ranges, not quotes, so get a proposal based on your own transactions and reporting needs.
An outsourced financial controller runs your month-end close, reconciliations, management accounts, financial controls and cash reporting, without the cost of a full-time hire. In practice that means reliable monthly numbers within about 10 working days of month end, a balance sheet you can trust and a named person who answers for both. Outsourced management accounts and controller-level reporting for UK SMEs are typically priced from about £500 to £2,000 a month depending on size, against roughly £63,800 a year for an in-house controller on a £55,000 salary once employer National Insurance and pension are added.
The pages that rank for this search are mostly short service pages, and two are American. None of them sets out what a controller should actually deliver each month, how the close should run, or how the role differs from a bookkeeper or a fractional CFO. That is what this guide does, so you can decide whether you need one and judge whether you are getting one.
Key takeaways
- What the role is: the person who owns the accuracy of your numbers every month: closing the books, reconciling the balance sheet, running controls and producing management accounts.
- The deliverable: a management accounts pack within about 10 working days of month end, with a reconciled balance sheet and a short commentary.
- The cost case: outsourced controller-level reporting typically costs £500 to £2,000 a month for a UK SME. An in-house controller on £55,000 costs about £63,800 a year before recruitment.
- When you need one: month-end takes more than two weeks, the numbers keep needing adjustments, or a lender or investor wants reliable monthly reporting.
- Where it sits: above the bookkeeper and below the fractional CFO. Most growing businesses need a controller before they need a CFO.
What is an outsourced financial controller?
An outsourced financial controller is an experienced accountant, or a small team, provided by an external firm to do the financial controller’s job for your business on a part-time or monthly basis. They make sure every transaction is recorded correctly, the month is closed on time, the balance sheet is reconciled, controls are working and the management accounts tell the truth.
The difference from a bookkeeper is responsibility. A bookkeeper records the transactions. A controller checks them, adds what is missing, such as accruals, prepayments and depreciation, reconciles every balance sheet line and signs off the month. The difference from a fractional CFO is focus. A controller looks after the accuracy of the numbers. A CFO uses those numbers to make strategic decisions on funding, pricing and growth.
What does an outsourced financial controller deliver each month?
A good controller delivers a defined set of outputs every month. If you are paying for a controller, this is the list to hold them to.
| Deliverable | What good looks like |
|---|---|
| Month-end close | Books closed to a fixed calendar, with a cut-off date that does not slip |
| Bank and balance sheet reconciliations | Every bank, credit card, control account and balance sheet line reconciled and evidenced |
| Accruals, prepayments and depreciation | Posted so that monthly profit reflects the month, not the timing of invoices |
| Management accounts | Profit and loss against budget and last year, balance sheet and cash flow |
| Commentary | A one page explanation of what changed and why, written for the directors |
| KPIs | Gross margin, overheads, debtor days, creditor days and cash runway, as relevant |
| Cash forecast | A rolling 13 week cash view, updated monthly |
| Controls | Payment approvals, segregation of duties, supplier bank detail changes checked |
| VAT and payroll oversight | Returns and payroll checked against the ledger before submission |
| Year-end file | A clean file for your accountant or auditor, with every balance supported |
Our guide to management accounts for UK businesses shows what a full monthly pack looks like, and our article on real-time management accounts dashboards explains how the numbers can be presented once the close is reliable.
What does a 10 working day month-end close look like?
The close is the controller’s core process. A 10 working day calendar is a sensible target for most SMEs, and faster is possible once the process is stable.
| Working day | Activity |
|---|---|
| Day 1 | Cut-off. All sales invoices raised, purchase invoices for the month logged, payroll journal posted |
| Days 2 to 3 | Bank, credit card and payment platform reconciliations. Sales and purchase ledger reconciled to control accounts |
| Days 4 to 5 | Accruals, prepayments, depreciation, stock and work in progress adjustments. Intercompany balances agreed |
| Day 6 | Balance sheet reconciliations completed and reviewed. Unexplained differences cleared or flagged |
| Days 7 to 8 | Draft management accounts, variance analysis against budget and last year |
| Day 9 | Commentary, KPIs and cash forecast update |
| Day 10 | Pack issued to directors. Open points carried to next month's checklist |
If your month currently takes three or four weeks, do not try to jump to five days at once. Most of the delay is usually missing information: supplier invoices that arrive late, sales that are not invoiced on time, or expenses that sit in someone’s inbox. A controller fixes the inputs first, then the timetable follows. Better accounts payable processes and credit control often do more for close speed than any software.
Financial controller, bookkeeper or fractional CFO: what is the difference?
The three roles form a ladder, and each one depends on the rung below.
| Role | Main job | Typical sign you need it | Typical commitment |
|---|---|---|---|
| Bookkeeper | Records transactions, reconciles the bank, processes payroll and VAT | The founder is doing the books in the evenings | Weekly or monthly |
| Financial controller | Closes the month, reconciles the balance sheet, runs controls, produces management accounts | Month-end takes more than two weeks or numbers keep changing | Monthly, part time or outsourced |
| Fractional CFO | Strategy, forecasting, funding, pricing, board and investor relations | Reliable numbers are in place and a big decision is coming | One to three days a week |
Most growing businesses need the controller before they need the CFO. A CFO working from unreliable numbers spends expensive days fixing the basics. A controller working with a good bookkeeper gives the CFO, or the directors, numbers they can act on.
How much does an outsourced financial controller cost compared with an in-house hire?
Outsourced management accounts and controller-level reporting for UK SMEs are typically priced as a monthly fee based on transaction volumes, the number of entities and the depth of reporting. The ranges published in our management accounts guide are about £500 to £1,000 a month for businesses under £2 million of revenue, £1,000 to £2,000 a month between £2 million and £10 million, and £2,000 to £5,000 a month for larger or more complex groups.
For an in-house comparison, take an illustrative financial controller on a salary of £55,000. Using HMRC’s rates and thresholds for employers 2026 to 2027:
| Cost line | In-house controller (illustration) | Outsourced controller-level service |
|---|---|---|
| Salary or fee | £55,000 a year | About £6,000 to £24,000 a year for most SMEs |
| Employer National Insurance (15% above £5,000) | £7,500 | Included |
| Employer pension (3% of qualifying earnings) | About £1,320 | Included |
| Recruitment | Typically 15% to 25% of first year salary | None |
| Holiday and sickness cover | Close stops when they are away | Provider covers |
| Software and equipment | Your cost | Usually included, you keep your own ledger |
| Annual cost before recruitment | About £63,800 | About £6,000 to £24,000 |
The outsourced service is not a like for like replacement in every case. A business with daily operational finance needs, such as a large purchasing team or multiple sites with cash handling, may need someone on site. For most SMEs, though, the controller’s work is monthly and periodic, and buying it as a service avoids paying for a full-time role to do a part-time job. We set out the wider hidden costs of keeping finance in-house in our article on the hidden costs of DIY bookkeeping.
When does a UK business need a financial controller?
Look for these signs. Two or more usually means it is time.
- Month-end takes longer than about two weeks, or does not happen at all until the year end.
- The numbers keep changing. Last month’s profit is revised every time someone looks at it again.
- The balance sheet is not reconciled. Suspense accounts, unexplained differences and old balances nobody can explain.
- A lender, investor or buyer is asking for monthly reporting. Covenants, investor updates and due diligence all depend on a reliable close.
- The year-end takes months. If your accountant spends weeks fixing the books before they can prepare the accounts, the problem is the monthly process.
- The business has outgrown its bookkeeper. More entities, more currencies, stock, projects or VAT complexity than a bookkeeper can be expected to manage.
- Controls depend on one person. The same person raises payments, approves them and reconciles the bank.
If several apply and you also face a funding round or a major investment, you may need a controller and a fractional CFO together. If the only problem is late bookkeeping, start there.
What should you look for in an outsourced financial controller?
- Qualification and experience. A qualified accountant, usually ACCA, ICAEW or CIMA, with experience of businesses of your size and sector.
- A written close calendar and deliverables list. If they cannot show you one, they will not run one.
- Work in your systems. The controller should work inside your Xero, QuickBooks, Sage or other ledger, so you keep ownership of your data.
- Named people. Know who your controller is and who covers when they are away.
- Clear scope and pricing. A fixed monthly fee for a defined scope, with any extra work agreed before it starts.
- Year-end readiness. The controller should leave a clean, supported file for your accountant or auditor. That matters more than ever as Companies House moves to software-only accounts filing from April 2028, when small companies will also file a profit and loss account.
How does an outsourced financial controller work day to day?
Most engagements follow the same rhythm. The controller has access to your accounting system, bank feeds and document store. Your team, or an outsourced bookkeeper, keeps transactions up to date during the month. The controller runs the close to the agreed calendar, raises queries in a shared log, and issues the management accounts pack. Once a month they walk the directors through the numbers, usually in a short video call.
Between closes, the controller is your first port of call for finance questions: whether a payment should be capitalised, how to treat a new contract, or why gross margin dipped. That access is often what owners value most, because it replaces guesswork with a qualified answer.
How Acenteus Accounting helps
Our outsourced finance function for UK businesses brings the bookkeeper and controller rungs together as one monthly service: bookkeeping, payroll, VAT, a fixed month-end close, reconciled balance sheet and management accounts with commentary, with one named contact. Our published pricing for SME management accounts starts at about £600 to £1,500 a month, and from about £1,200 to £3,000 a month for investor-backed businesses that need fuller reporting.
Acenteus is a UK company based in Brighton, led by Chris Barnard, a Chartered Certified Accountant and CIMA member with more than 14 years of experience, with a team of more than 100 accounting professionals in our dedicated delivery centres in India under UK oversight. We work inside your own accounting software, so your data stays yours.
“Working with Chris wasn’t just a transaction; it was a partnership,” says the Founder and CEO of Skyhaven Group.
If your month-end takes too long or your numbers keep moving, see our full range of accounting services for small businesses, or book a finance function review and we will show you what a 10 day close would look like for your business.
Frequently Asked Questions (FAQ)
Runs the monthly close, reconciliations, management accounts, financial controls and cash reporting, without the cost of a full-time hire. The output is a reliable management accounts pack within about 10 working days of month end.
When month-end takes longer than about two weeks, the numbers need regular adjustment, the balance sheet is not reconciled, or lenders and investors ask for reliable monthly reporting.
Published ranges for outsourced management accounts and controller-level reporting run from about £500 to £2,000 a month for most UK SMEs, rising to £2,000 to £5,000 a month for larger or more complex groups.
A financial controller makes sure the numbers are accurate and on time. A fractional CFO uses those numbers to lead strategy, forecasting, funding and board reporting. Most businesses need the controller first.
A bookkeeper records transactions. A controller checks them, posts the month-end adjustments, reconciles the balance sheet, runs controls and produces management accounts.
An outsourced finance function usually covers more: bookkeeping, payroll, VAT and the controller's close and reporting in one service. An outsourced financial controller may sit on top of your existing bookkeeper.
Many businesses can move to a reliable monthly close within two to three months. The first month usually goes on cleaning up the balance sheet, and the timetable shortens as the inputs improve.
