Accounting Companies in Cardiff: 490 Active Firms (2026)
Accounting companies in Cardiff provide bookkeeping, tax, payroll and audit services to businesses across the Welsh capital and its commuter towns.
Finance directors, owner-managers, trustees and practice partners tend to be the main buying centres, rather than central procurement teams. Demand is usually split between recurring compliance retainers, outsourced finance work, payroll administration, statutory audit where registration allows, and advisory projects linked to governance, property, funding or tax planning. The customer base is mostly regional: SMEs, charities, property groups, healthcare providers and other South Wales organisations that need continuity from a named team. Engagements range from monthly bookkeeping and payroll to annual accounts, audit fieldwork and periodic assurance work, with trust and sector familiarity often carrying as much weight as price.
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Cardiff has 490 actively trading accounting and audit companies, giving the city a sizeable local services base rather than a market dominated by revenue-scale practices. Only 1 company is above £5M in turnover, while 72 firms were incorporated since 2022, which points to continued formation at the smaller end of the practice market. Reported employment totals 635 roles across 124 firms, with each of those firms reporting at least some headcount. That footprint fits a sector built around partner-led client relationships, payroll teams, bookkeeping staff and qualified audit or tax specialists rather than large delivery centres.
Statutory audit sits apart from bookkeeping, payroll and routine tax compliance because it is a regulated activity. The FRC is the Competent Authority for public supervision of UK statutory auditors under the Statutory Auditors and Third Country Auditors Regulation. Audit firms are registered and supervised through ACCA, Chartered Accountants Ireland, ICAEW and ICAS, while audit qualifications sit with those bodies and AIA. Wider accountancy training and membership flows also involve CIMA, CIPFA and AAT. The FRC has reported continued consolidation in registered statutory audit firms across the UK, so Cardiff practices offering audit face a different cost, staffing and file-review profile from non-audit practices.
Local practices appear likely to remain service-led and relationship-driven, with recurring compliance work giving smaller firms a reason to stay independent even as audit registration becomes more burdensome. Growth tends to come from adding payroll, management accounts and advisory capacity around existing clients rather than from pure volume. Scale-up scarcity may persist because regional professional-services firms often depend on partner capacity, qualified staff pipelines and reputational risk controls. Consolidation has been most plausible where audit files, succession planning or technology spend push owners towards merger rather than continued stand-alone practice.
What’s in the file
One row per company, 50+ columns — everything below plus each company’s verified directors, from Companies House filings.
Company data
Verified directors — included
490
Active firms
2026
72
New incorporations
since 2022
1
Above £5M turnover
Cardiff cohort
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Key facts
About 1% of the trading cohort reports turnover above £5M (1 of 490 firms) — the rest sits below that revenue band.
14% of the cohort was incorporated since 2022 (72 firms), so a sizeable share is in its first few filing cycles.
Statutory audit is a regulated activity, with the FRC designated as Competent Authority under the Statutory Auditors and Third Country Auditors Regulation 2016.
UK statutory auditors and audit firms are registered and supervised through four Recognised Supervisory Bodies.
Registered statutory audit firms fell to 3,760 in 2024 from 5,007 in 2020, a 24.9% decline over five years.
The audit-firm count also fell 6.9% in 2024, from 4,038 firms in 2023 to 3,760 in 2024.
FRC 2025 data reports more than 408,000 members of surveyed accountancy bodies in the UK and Republic of Ireland, compared with more than 623,000 worldwide.
Top Cardiff Accounting companies
Financial sub-scores
Computed from 3 filingsProvides accountancy and business advisory services including audit, annual accounts preparation, tax compliance and planning, management accounts, payroll and auto‑enrolment bureau services. Also…
Serves businesses, charities, public-sector organisations and personal clients, including corporate clients, new start businesses and individuals in South Wales.
Financial Health
StableStable · 0% CAGR over 2y
Location
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Financial sub-scores
Computed from 4 filingsProvides chartered accountancy and tax advisory services for individuals and businesses. Services include annual accounts, bookkeeping, payroll, VAT returns, audit, corporate finance, tax planning,…
Serves private individuals, sole traders, start-ups, small businesses and larger companies, mainly in Cardiff and South Wales, with clients across sectors including those with crypto tax needs.
Financial Health
StableStable · Hiring · 4% CAGR over 3y
Location
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Financial sub-scores
Computed from 3 filingsProvides accountancy and business advisory services including audit and annual accounts, tax compliance and planning, management accounts, payroll and auto‑enrolment, accounting software support, and…
Serves businesses and individual clients, including corporate organisations, charities and public sector bodies. Targets new start businesses and legal-sector clients, and also supports personal tax…
Financial Health
StableStable · -2% CAGR over 2y
Location
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Financial sub-scores
Computed from 3 filingsProvides accountancy and business advisory services including financial accounts preparation, audit, tax compliance and planning, VAT, payroll, and company secretarial support. Also advises on…
Serves small and growing businesses in Cardiff and nearby South Wales towns, including organisations needing accountancy, audit, tax, payroll, corporate finance and business advisory support.
Financial Health
StableStable · -11% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides chartered accountancy and audit services for businesses and organisations, including financial accounts preparation, assurance, tax planning and advisory, VAT, payroll and PAYE, management…
Serves privately owned and owner-managed businesses, other organisations, and clients requiring probate and estate administration support.
Financial Health
WeakWeak · -3% CAGR over 5y
Location
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Financial sub-scores
Computed from 3 filingsProvides accounting, auditing and tax advisory services for businesses and individuals, including corporate and personal tax planning, VAT advice, payroll, outsourced accounting, wealth planning, and…
Serves owner-managed businesses, entrepreneurs and private clients, alongside not-for-profit, voluntary, community and social enterprise organisations.
Financial Health
HealthyHealthy · 4% CAGR over 2y
Location
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Provides accounting, audit and tax advisory services for businesses and individuals. Services include accounts preparation, tax compliance and planning, payroll, bookkeeping, VAT, company secretarial…
Serves owner-managed businesses, professional practices and individuals, including solicitors, barristers, doctors, dentists, property investors, construction and property development firms, and…
Financial Health
N/AN/A
Location
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Financial sub-scores
Computed from 3 filingsProvides accountancy, audit, and tax planning services for businesses and individuals. Offers financial reporting, management accounts, compliance support, and business advisory services, including…
Serves businesses and individuals in Cardiff and South Wales, from sole traders and owner-managed SMEs to larger companies, plus personal tax clients.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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Provides accountancy and tax services for businesses and individuals, including bookkeeping, audit, payroll, VAT, self‑assessment and corporate tax. Also offers company secretarial support, corporate…
Serves small businesses, owner-managed companies and other organisations in Cardiff and nearby South Wales towns, alongside individual taxpayers.
Financial Health
N/AN/A
Location
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Financial sub-scores
Computed from 5 filingsProvides accounting, auditing, payroll, and tax advisory services for businesses and individuals. Offers business advisory, VAT support, cloud accounting software solutions, estate planning, probate…
Serves B2B and private clients: ambitious startups, established and growing SMEs in property, construction, manufacturing, engineering, digital/tech, SaaS and block management, plus property…
Financial Health
DistressedDistressed
Location
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Financial sub-scores
Computed from 2 filingsProvides audit and assurance, accounting, tax compliance, and business advisory services. Offers corporate finance, restructuring, payroll, outsourced accounting, and wealth and tax planning services…
Serves growth-focused UK businesses and organisations across agribusiness, automotive, real estate, education, energy, financial services, healthcare, manufacturing, not-for-profit, retail,…
Financial Health
HealthyHealthy · -5% CAGR over 1y
Location
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Financial sub-scores
Computed from 5 filingsProvides accountancy and tax services including bookkeeping, audit, payroll, VAT, self‑assessment, corporate and personal tax planning, company secretarial support, corporate finance advice, business…
Serves small businesses and organisations in Cardiff and nearby South Wales towns, alongside individual taxpayers, with a focus on clients without in-house finance expertise.
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 5y
Location
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Financial sub-scores
Computed from 3 filingsProvides chartered accounting and tax advisory services to businesses and individuals, including accounts preparation, tax returns, tax planning, investigations support, company secretarial services,…
Serves individuals and businesses, especially SMEs, charities and academies, construction and property firms, entertainment, media and sports clients, healthcare providers, retailers, and wealth…
Financial Health
WeakWeak · Hiring · 22% CAGR over 2y
Location
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Financial sub-scores
Computed from 3 filingsProvides chartered accountancy services including preparation of accounts, tax planning and compliance, payroll administration, audit, and business advisory support for businesses and individuals,…
Serves small businesses, start-ups, employers and individuals needing accountancy and tax support, with an emphasis on clients in Cardiff, Caerphilly and nearby areas.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -7% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides accountancy and business advisory services, including bookkeeping, accounts preparation, tax planning, VAT, payroll, corporate finance, and company secretarial support. Advises individuals…
Serves owner-managed businesses, start-ups and medical sector clients in Wales, alongside individuals needing personal tax, estate planning, retirement and self-assessment support.
Financial Health
StableStable · -5% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 32% CAGR over 4y
Location
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Provides accounting and financial advisory services for businesses and individuals, including bookkeeping, management accounts, payroll, VAT, tax returns, corporation tax planning, company…
Serves small businesses, sole traders, partnerships, limited companies, charities, start-ups and individual taxpayers, primarily clients seeking ongoing financial support in South Wales.
Financial Health
N/AN/A
Location
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Financial sub-scores
Computed from 2 filingsFinancial Health
StrongStrong · Hiring · 100% CAGR over 1y
Location
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Financial Health
N/AN/A
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Computed from 5 filingsFinancial Health
StableStable
Location
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Financial Health
N/AN/A
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Financial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
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Computed from 5 filingsProvides accounting, tax planning and compliance services to individuals and businesses, including bookkeeping, financial reporting, payroll, cloud accounting using Xero, and advisory support on…
Serves individuals and businesses, from small local firms to large national and international companies, with emphasis on business owners using cloud accounting.
Financial Health
StableStable · Hiring · 16% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
StableStable · Hiring · 19% CAGR over 4y
Location
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Computed from 2 filingsFinancial Health
StableStable
Location
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Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
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Computed from 5 filingsFinancial Health
StrongStrong
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Computed from 5 filingsFinancial Health
StrongStrong
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Computed from 2 filingsFinancial Health
StableStable · 0% CAGR over 1y
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Financial sub-scores
Computed from 5 filingsProvides accountancy services for businesses, including financial reporting, bookkeeping, management accounts, and accounting system setup. Offers ongoing monthly review of financial data and…
Serves ambitious business owners and SMEs seeking strategic accountancy support, particularly values-led companies focused on growth, resilience, and balancing people, planet and profit.
Financial Health
WeakWeak · -24% CAGR over 4y
Location
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Financial sub-scores
Computed from 2 filingsFinancial Health
WeakWeak
Location
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Computed from 5 filingsFinancial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
HealthyHealthy · Hiring · 19% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides accountancy and tax services for businesses, including bookkeeping, financial reporting and advisory. Also offers HR support, commercial finance advice, wealth management through a regulated…
Serves businesses, particularly SMEs and growing companies, seeking accountancy, tax, HR, commercial finance and related professional support.
Financial Health
HealthyHealthy · -2% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides accountancy services for sole traders, partnerships, and limited companies, including year-end accounts, bookkeeping, payroll, VAT returns, corporation tax and self-assessment filings. Also…
Serves UK sole traders, self-employed individuals, partnerships and small limited companies seeking local accountancy and tax support, including people starting, running, growing, buying or selling a…
Financial Health
WeakWeak · Hiring · 19% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -16% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
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Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · Hiring · 50% CAGR over 4y
Location
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Financial Health
N/AN/A
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Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 2 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
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Computed from 5 filingsProvides accounting, tax compliance and planning, and financial management services for businesses. Offers digital accounting systems, outsourced finance teams, company secretarial support, and…
Serves businesses, especially SMEs and growth companies needing accounting, tax and financial management support. Targets firms involved in fundraising, mergers, acquisitions, business sales and…
Financial Health
WeakWeak · -2% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
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Computed from 2 filingsFinancial Health
StableStable · 0% CAGR over 1y
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Computed from 5 filingsProvides accounting and taxation services for businesses, including preparation of annual accounts, VAT returns, bookkeeping, and payroll. Also offers tax planning, business start‑up advice, business…
Serves small businesses, start-ups and growing companies, primarily owner-managed businesses seeking ongoing accountancy and business advisory support.
Financial Health
StableStable · -7% CAGR over 4y
Location
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How Cardiff Accounting companies work and how to sell to them
What they do
Cardiff accounting practices earn most of their recurring revenue from annual compliance cycles: accounts preparation, corporation tax, personal tax, VAT support, payroll and bookkeeping. Many package those services into monthly fixed-fee retainers, with scope set by transaction volume, payroll headcount, reporting cadence and the level of partner review required. Advisory, assurance and audit work is more often priced through separate engagement letters, day rates or project fees, especially where governance, property transactions, charity reporting or funding work creates a defined assignment. The operating model is professional services rather than software: client knowledge, deadline control and qualified review time are the saleable assets.
Who they sell to
Most firms sell to local owner-managed businesses, charities, property groups, healthcare providers and professional-services clients across Cardiff and South Wales. The buyer is usually an owner, finance director, trustee, treasurer or practice partner, with the accountant often chosen through referral, prior relationship or sector familiarity. Small compliance engagements can convert after a discovery call, fee quote and professional clearance process. Audit, assurance and outsourced finance work tends to involve a longer cycle, with board approval, evidence of credentials, continuity planning and fee benchmarking. Formal tenders appear more likely where charities or larger regional organisations need documented procurement.
What they buy
Most accounting practices tend to spend on tools and services that protect fee recovery, reduce deadline pressure and make client work easier to evidence. Common categories include practice management, workflow, time and billing, document management, client portals, electronic approval, accounts production, tax filing, payroll bureau software and audit-file systems. They also buy cyber security, managed IT, backup, identity checks, professional indemnity insurance, technical training, recruitment support and outsourced bookkeeping or payroll capacity. Marketing spend is usually local and referral-led rather than brand advertising, although firms with advisory ambitions may invest in content, events and sector-specific positioning.
Why and how to sell to them
Accounting buyers tend to evaluate suppliers when partner capacity is under strain, client deadlines are being missed, audit registration costs rise, payroll volumes expand or succession planning prompts a merger discussion. Headcount growth, a new office, a move into advisory work or a change in practice leadership can also create a buying window. Outbound messages usually need to be practical: fewer write-offs, faster client chasing, cleaner audit trails, better utilisation, reduced rekeying or more predictable delivery during tax and payroll peaks. Claims need evidence, because these firms sell trust themselves and are wary of vendor risk.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
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Frequently asked questions
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