How a founder should set up a finance and accounting team in 2026

How a founder should set up a finance and accounting team in 2026

On 25 September 2026 we counted what our own category index at trustlist.uk/categories holds for finance and accounting. There are 9,007 entries under Accounting Firm. Against that, the Accounting Software category holds 10 products. Across 21 finance software categories, from bookkeeping and accounts payable to budgeting, spend management and treasury, we found 251 product entries, and a product can appear in more than one category. Accounting firms outnumber every kind of finance software we list by more than thirty to one.

The second finding is about prices. Across our whole catalogue, 5,092 software listings show prices from the original 2020 import with no date attached. When we checked a sample of 30 of those against the vendors' own pricing pages, only 6 still matched. The lesson for a finance team is general: a price you did not read on the vendor's own page this month is not a price. This guide explains how to build the finance function around that kind of discipline, which roles to hire and in what order, what the 2026 rules require, where automation and AI help, and what still needs a person.

What our count says about how small companies buy finance

The imbalance in our catalogue is not only a gap in our software coverage, though it is partly that. It reflects how small companies actually get their accounts done. For most businesses the first finance "team" is an outside accountant who prepares the year-end accounts and tax returns, often with a bookkeeper who keeps the records in between. Software comes with that relationship, frequently chosen by the accountant.

That is a reasonable start. The risk is staying there too long. An outside accountant who sees your books once a year cannot tell you in March that you will run out of cash in June. The job of the founder is to know when to add each layer, and to keep ownership of the few things that should never be outsourced: approving payments, the bank mandate, and the numbers the board sees.

Our counts show what we list, not the size of the market, and much of our catalogue is old: 9,620 live company listings were last updated in December 2020. Use any directory, ours included, to find names, then confirm services, qualifications and prices with the firm itself. That applies to our accounting firm pages too: the whole catalogue holds only 20 client reviews, so use them to find names, not to judge quality.

The roles, from bookkeeper to CFO

Finance roles are often confused, and job titles vary. These are the working definitions we use.

• Bookkeeper. Records transactions, reconciles the bank, raises sales invoices, enters supplier bills, chases small debts, prepares VAT workings. Accurate and routine.
• Accounts payable and receivable clerks. Split out of the bookkeeper role once volumes grow: one side pays suppliers, the other collects from customers.
• Payroll administrator. Often outsourced to a bureau; sometimes sits in HR. Either way, finance should reconcile payroll to the bank and the ledger.
• Management accountant. Produces the monthly management accounts, budgets and forecasts, and explains variances. This is the first role that looks forward rather than back.
• Financial controller. Owns the close, the controls, the audit and the accounting policies. Makes sure the numbers are right and that nobody can move money alone.
• Finance director or CFO. Owns strategy, funding, the banking relationship, board reporting and the finance team. In smaller companies this is often a part-time or fractional role.
• Outsourced accountant. An external firm that prepares statutory accounts and tax returns, advises on tax, and may run bookkeeping and payroll as well.

The usual order is outsourced accountant, then bookkeeper, then management accountant, then financial controller, then a full-time FD or CFO. A fractional FD can come much earlier than a full-time one; many companies bring one in for a few days a month before a fundraise or a first bank loan.

The UK rules on the 2026 calendar

Several rules change what a finance team must do. These are the dates as the UK government states them.

Rule	What it requires	Date
Making Tax Digital for VAT	All VAT-registered businesses keep digital records and file VAT returns through compatible software	In force now
Making Tax Digital for Income Tax	Sole traders and landlords keep digital records and send quarterly updates; thresholds are qualifying income over £50,000, then £30,000, then £20,000	6 April 2026, 6 April 2027, 6 April 2028
Companies House identity verification	New directors and people with significant control must verify identity; existing directors by the company's next confirmation statement	Required since 18 November 2025
Failure to prevent fraud	Large organisations can be prosecuted if an employee or agent commits fraud for the organisation's benefit, unless reasonable procedures were in place	In force since 1 September 2025
Mandatory e-invoicing	All VAT invoices between businesses, and between businesses and government, issued as structured e-invoices	April 2029
Accounting records	Limited companies keep records for six years from the end of the financial year they relate to	Standing rule

Making Tax Digital for Income Tax applies to individuals, not to limited companies. It matters to a founder who also trades as a sole trader or lets property, and to any business run as a sole trade. HMRC decides who is in scope from the previous Self Assessment return: for April 2026 it looked at the 2024 to 2025 return. Quarterly updates are due by 7 August, 7 November, 7 February and 7 May. HMRC says it will not apply penalty points for late quarterly updates during the 2026 to 2027 tax year, but late tax return penalties still apply. HMRC reports that more than 350,000 businesses had signed up after the service went live in April 2026.

E-invoicing. After consulting in 2025, the government confirmed in November 2025 that all VAT invoices must be issued as e-invoices from 2029, covering business-to-business and business-to-government invoices but not sales to consumers. It will not add real-time reporting to HMRC alongside the mandate. HMRC's roadmap update says the mandate starts in April 2029 and that a detailed implementation roadmap will be published at Budget 2026. In June 2026 the government named Peppol as the core network for exchanging e-invoices. If you are choosing accounting or billing software now, ask the vendor how and when it will send and receive e-invoices over Peppol.

Failure to prevent fraud. The offence applies only to large organisations, defined as meeting two of three tests: more than 250 employees, more than £36 million turnover, more than £18 million in total assets, measured across the whole group. The defence is having reasonable fraud prevention procedures, and Home Office guidance names six principles: top-level commitment, risk assessment, proportionate procedures, due diligence, communication and training, and monitoring and review. One of its worked examples is an accounts department overstating profits to attract investors. The penalty is an unlimited fine. A company approaching the thresholds should build the procedures before it crosses them, because the tests apply to the financial year before the fraud.

Companies House identity verification. Since 18 November 2025, identity verification has been a legal requirement. Existing directors must verify by their company's next confirmation statement, and a company cannot file that statement unless all its directors are verified. Put the confirmation statement date in the finance calendar and check that every director has a personal code well before it.

Controls and segregation of duties

Controls sound like a large-company idea. They matter most in small companies, where one trusted person often does everything. The principle is simple: no single person should be able to create a payee, approve a payment and reconcile the bank.

The minimum set, which works even with two people:

1. Payments need two people. One prepares the payment run; a different person, usually a director, releases it in the bank. Set this up in the bank itself, not just in a policy.
2. Supplier bank details are changed only after a call-back. A request to change bank details, even from a known supplier's email address, is verified by phone using a number already on file. This is the most common route for invoice fraud.
3. The person who reconciles the bank does not release payments. If that is impossible, a director reviews the reconciliation each month and signs it.
4. New suppliers and new employees on payroll are approved by someone other than the person who sets them up.
5. Credit notes and write-offs over a set amount need approval.
6. Access to the accounting system is reviewed every quarter. Leavers removed, admin rights kept to two people.
7. Management accounts go to someone outside finance. The founder or board reads them monthly and asks questions.

At 250 staff and above, write these down as a controls matrix, test them twice a year, and link them to the failure to prevent fraud risk assessment.

AI and automation: what to automate and what still needs a human

Most of what a bookkeeper did ten years ago can now be automated to a large extent. Bank feeds bring transactions in daily. Rules and machine learning suggest how to code them. Bills are read from emails and PDFs and turned into draft entries. Payment reminders go out on a schedule. Reconciliation software matches the bulk of bank lines to invoices and bills. AI assistants can draft variance commentary and answer questions about the ledger.

What this changes is the shape of the team, not the need for one. Fewer hours go on data entry; more go on checking, exceptions and judgement. The areas where a person is still needed are:

• Approving anything that moves money. Automation can prepare a payment run. A named person releases it.
• New suppliers and changed bank details. Fraudsters target exactly the step where automation makes things smooth.
• Exceptions. Unmatched bank lines, duplicate bills and odd coding suggestions are where errors and fraud sit. Someone must clear them each week, not let them pile up.
• Judgements. Accruals, prepayments, revenue recognition on contracts, bad debt provisions, stock valuation and anything a tax adviser would want to discuss.
• Reading the output. An AI summary of the month is only as good as the ledger underneath. The management accountant or controller should be able to explain every material number without the tool.
• Deciding what the tool may touch. Know which features use AI, whether any send your ledger data to a third party, and whether they are switched on by default. On our news desk in September 2026, four of 28 dated vendor changes switched a feature on by default for existing customers.

A useful test: if the person who set up the automation left tomorrow, could someone else explain what it does, and would the month-end still close? If not, the automation is a risk as well as a saving.

Buying finance software without trusting old prices

Our own data is the reason for this section. Four in five of the stale prices we sampled no longer matched what the vendor charges. Finance teams should therefore:

• Take prices only from the vendor's own page or a written quote, and record the date.
• Ask what the price includes: number of users, entities, bank feeds, payroll, multi-currency, and any per-transaction fees.
• Ask how much notice the vendor gives of price changes. Our news desk logged a median of 31 days' notice across 28 vendor changes in September 2026, with six at a week or less.
• Ask about Making Tax Digital compatibility for VAT (and for Income Tax if relevant), Peppol e-invoicing plans for 2029, and data export if you leave.
• Check whether your outside accountant supports the product. Many accountants prefer to work in one or two systems, and switching later costs time.

The categories on our site worth browsing for a shortlist include accounting software, accounts payable software, accounts receivable software, expense report software and financial reporting software. Treat them as lists of names to check, not as price guides.

Org shapes at 10, 50 and 250 staff

These shapes assume a UK company selling to other businesses. Adjust for complexity: several legal entities, foreign currency, stock, or project-based revenue all push you towards the next shape sooner.

	About 10 staff	About 50 staff	About 250 staff
In-house	None, or a part-time bookkeeper; founder approves payments	Full-time bookkeeper or finance assistant; part-time or new management accountant	Financial controller; management accountant; two or three in AP, AR and payroll; FD or CFO
Outsourced	Accountant for year-end accounts, corporation tax and VAT; payroll bureau	Accountant for statutory accounts and tax; fractional FD a few days a month; payroll bureau	Auditor; tax adviser; possibly outsourced payroll with in-house checks
Close	Quarterly for VAT, monthly bank reconciliation	Monthly management accounts by working day 10	Monthly close by working day 5 to 7; board pack; rolling forecast
Controls	Dual approval in the bank; call-back on bank detail changes	Segregation between bookkeeper and approver; quarterly access review	Written controls matrix; fraud risk assessment; internal testing

At around 250 staff the failure to prevent fraud tests become real: more than 250 employees is one of the three, and a company of that size may already meet the turnover or assets test. If you employ that many people, HR will be changing too; see our companion guide on how to structure an HR team.

A month-end close checklist

Use this as a starting point. Assign an owner and a working day to each line, and keep the completed checklist with the month's file.

Before month-end

1. Send reminders for expense claims and supplier invoices due in the month.
2. Confirm payroll changes for the month have been approved.

Working days 1 to 3

1. Reconcile every bank, card and payment-provider account to the statement. Clear or explain every unmatched item.
2. Post all supplier bills and sales invoices dated in the month; check for duplicates.
3. Reconcile payroll: gross pay, tax, National Insurance and pensions to the payroll report and to the bank.
4. Review the list of supplier bank detail changes in the month; confirm each had a call-back.

Working days 3 to 5

1. Post accruals for costs incurred but not billed, and prepayments for costs paid in advance.
2. Recognise revenue according to your policy, including deferred income for annual contracts billed up front.
3. Post depreciation and any fixed asset additions or disposals.
4. Reconcile VAT control, PAYE control, and any intercompany balances.
5. Review aged debtors; chase and, where needed, provide for doubtful debts.
6. Review aged creditors for anything unexpected or disputed.

Working days 5 to 10

1. Produce the profit and loss, balance sheet and cash flow; compare with budget and last year.
2. Write a short note on every material variance, in plain language.
3. Update the cash forecast for the next 13 weeks.
4. Have the controller or FD review and sign off, then send to the founder or board.
5. Lock the period in the accounting system so it cannot be changed without approval.

Every quarter

1. Submit the VAT return through MTD-compatible software.
2. Review user access to the bank and accounting system.
3. Check the Companies House confirmation statement date and director verification.
4. Recheck the price and terms of each finance system against the vendor's own page.

Every year

1. Agree the year-end timetable with your accountant or auditor.
2. Refresh the fraud risk assessment, especially if you are near the large organisation thresholds.
3. Review the e-invoicing plan against the government's roadmap as the April 2029 start approaches.

A finance team that can run this list every month, on time, with the same result whoever runs it, is in good shape. The size of the team matters less than that.

Sources

• TrustList category index: accounting firm and finance software category counts. TrustList, counted 25 September 2026.
• Check if you're eligible for Making Tax Digital for Income Tax: thresholds and start dates. HMRC, updated 26 March 2026.
• Send quarterly updates for Making Tax Digital for Income Tax: update periods, deadlines, no late-update penalty points in 2026 to 2027. HMRC (read 25 September 2026).
• Making Tax Digital for VAT: all VAT-registered businesses in scope. HMRC (read 25 September 2026).
• HMRC transformation roadmap: update 2026: e-invoicing from April 2029, roadmap at Budget 2026, MTD sign-ups. HMRC, updated 27 July 2026.
• Promoting electronic invoicing: consultation response: scope of the mandate, no real-time reporting in 2029. HMRC and Department for Business and Trade, 26 November 2025.
• Tax update 2026: summary: Peppol as core e-invoicing network. HM Treasury and HMRC, 23 June 2026.
• Guidance on the offence of failure to prevent fraud: large organisation tests, six principles, worked examples. Home Office, updated 10 October 2025.
• Offence of failure to prevent fraud introduced by ECCTA: in force 1 September 2025, unlimited fine. Home Office, updated 10 October 2025.
• Verifying your identity for Companies House: requirement since 18 November 2025, confirmation statement rule. Companies House, updated 1 June 2026.
• Company and accounting records: six-year retention and penalty. GOV.UK (read 25 September 2026).