What Founders Should Look for in an Accounting Firm
Most accounting firms were built for established businesses with stable revenue - not pre-revenue startups burning runway or SaaS companies with complex ARR models. If you are building a tech company in the UK, the right firm looks very different from the one your solicitor recommended.
Why traditional firms often fail tech founders
A standard high-street accountancy firm handles VAT returns, payroll, and annual accounts for shops, tradespeople, and professional services businesses. That is a legitimate market. It is just not your market. The questions tech founders actually have - when to apply for SEIS advance assurance, how to structure equity vesting, whether contractor spend qualifies for R&D relief - are not part of a standard engagement.
The result is founders either get no guidance, or they get guidance from someone who read the same HMRC page they already found themselves. Neither outcome is worth the fee.
What a modern accounting firm actually does
A firm built for tech founders handles your statutory obligations - company accounts, corporation tax, VAT, payroll - but it also front-runs the reliefs and structures that matter to early-stage companies. That means flagging SEIS advance assurance before your first raise, identifying qualifying R&D expenditure throughout the year rather than scrambling in March, and modelling the tax impact of share option schemes before you issue them.
Automation matters here. Firms that use tools like Xero give you real-time visibility into your numbers rather than a set of accounts six months after your year-end. That changes how you run the business.
Regulation matters too. ICAEW regulated firms are subject to professional conduct standards, carry indemnity insurance, and have a formal complaints route. For a founder handing over their financial records, that is not a formality.
The tax reliefs UK tech founders should know
SEIS and EIS let early investors claim income tax relief of 50% and 30% respectively on their investment, plus capital gains exemption on a qualifying exit. Advance assurance from HMRC is not mandatory but most investors expect to see it before committing. Getting it before your first pitch is straightforward when done early; correcting a structure after shares have been issued is expensive.
R&D tax credits - now under the merged RDEC scheme for most companies following changes that took effect April 2024 - let you recover a percentage of qualifying R&D spend as a tax credit or cash repayment. Qualifying costs include staff salaries, employer NICs, software used in R&D, and some subcontractor costs. If your accountant has not discussed this with you in the last 12 months, it is worth asking directly.
EMI share options give employees favourable capital gains treatment on exit but require HMRC valuation approval before grant. Missing that step means the options may not qualify - a common and avoidable mistake.
How to evaluate a firm before signing
Ask directly: how many of your clients are pre-revenue or early-stage tech companies? What R&D claims did you submit last year? Do you handle SEIS advance assurance in-house or refer it out? Those answers will tell you quickly whether this is a core service or an occasional side job.
Check regulation. An ICAEW regulated firm is subject to ongoing monitoring. An unregulated firm is not. Both can call themselves accountants - the title is not protected in the UK - so the distinction matters.
Look at how they communicate. A firm that only surfaces when accounts are due is not adding value. A good firm flags issues before they become problems and is reachable when you have a question that cannot wait for the next scheduled call.
Frequently asked questions
When should I apply for SEIS advance assurance?
Before you start pitching to investors, ideally before you have taken any money. SEIS advance assurance is a letter from HMRC confirming your company appears to meet the qualifying conditions. It does not guarantee qualification - that is determined when shares are actually issued - but most angel investors and SEIS funds expect to see it. Applications can take several weeks to process. Your accountant should be able to prepare and submit the application on your behalf.
Does my startup qualify for R&D tax credits?
If your company is working to resolve a scientific or technological uncertainty - meaning you are trying to achieve something that is not straightforward given current knowledge in the field - you may qualify. This covers more software development than most founders assume, including novel algorithms, performance challenges at scale, and integrations where no standard solution exists. Qualifying costs include staff salaries, employer NICs, software licences used in R&D, and some subcontractor costs. Your accountant should be assessing this throughout the year, not only at filing time.
Do I need an accountant from day one?
Not from the exact day you incorporate, but earlier than most founders expect. The decisions that create problems later - share structure, director salary versus dividends, SEIS eligibility - are made in the first few months. Getting them wrong is not fatal, but correcting them costs time and money. Most early-stage founders benefit from a short paid consultation before incorporation and a proper engagement by the time they are paying themselves or approaching their first raise.