R&D merged scheme claims, SEIS and EIS advance assurance, EMI and share schemes, fractional CFO and core compliance. For post-formation, funded and scaling UK tech, SaaS and software companies. Not the commodity cheap-filing market.
BADR rate on qualifying gains from 6 April 2026 (£1m lifetime limit; EMI shares qualify on 2-year rule)
The compliance obligations that matter most to a funded startup (R&D claims, EIS compliance, EMI option scheme management, share scheme hygiene at formation and round) are encountered infrequently by a generalist firm. They are the main work here. Commodity annual accounts and CT returns are part of the engagement, not the reason for it.
Who we work with
Funded and scaling product companies. Not contractors, not agencies.
Solo contractors and personal service companies are out of scope, as are creative and marketing agencies. This site works with tech, SaaS, software and fintech companies that have passed formation and are growing.
VAT registration is mandatory once rolling 12-month taxable turnover reaches £90,000. For SaaS, B2B place-of-supply rules may keep overseas revenue outside the threshold. Employer NIC is 15% above a £5,000 secondary threshold; a solo-director company is excluded from the Employment Allowance.
Four calculators covering the questions founders ask most.
All four tools are scenario and estimate calculators. They state their assumptions openly and end at a prompt to speak to us for the real numbers. No sign-up, no data stored.
How many UK tech and software companies are on the register, how many have been dissolved, and how formations have moved year by year across eight software and IT SIC codes, from live Companies House Advanced Search API counts. It is a snapshot of the register rather than a cohort survival curve, and the page says so. The methodology and limitations are stated prominently. It is a compliance-awareness resource for founders, not a regulatory filing or investment advice.
A generalist handles the accounts. We handle the parts where getting it wrong is expensive.
R&D claims that survive a HMRC compliance check, SEIS eligibility checked before investors are approached, EMI options that retain their qualifying status, section 431 elections filed in the 14-day window: a generalist encounters these infrequently. They are the routine work here.
How Founder Tax Partners handles specialist startup tax areas
Area
Our approach
R&D: not every line of code qualifies
Qualifying R&D must seek an advance in science or technology, so a claim that stretches routine software work invites a HMRC compliance check, and an overclaim can be clawed back with interest and penalties long after the credit was banked. We assess each project on its technical facts and build claims that survive scrutiny.
SEIS and EIS: eligibility is easy to lose
A single borderline contract or an overlooked asset or headcount test can disqualify a round after investors have committed, and the fix is rarely available once shares are issued. We pressure-test eligibility before investor conversations begin, not after investment lands.
EMI: a missed deadline is expensive to unwind
Miss the notification or ERS-return window and the affected options can lose their qualifying status, converting a tax-advantaged grant into an income-tax and NIC charge for the employee at exit. Restructuring after the fact is possible but costly. We run the filing calendar so it does not happen.
Section 431 elections: the consequence outlives the window
Skip the joint election on restricted securities and the holder can face an income-tax charge on later share growth instead of a capital gain, a difference that only surfaces at exit when it can no longer be corrected. We flag and file it at the point of acquisition.
IR35 and contractor work: we state the boundary only
This site covers funded and scaling product companies. IR35 and off-payroll working depth is out of scope for this firm; a specialist contractor tax adviser is the right home for it.
Loss-making and pre-profit companies: still worth engaging early
Composite accounts based on patterns across our client base. Names, amounts and specific details anonymised. The compliance situations described are real.
“We had submitted our first R&D claim ourselves, including a project that was a rebuild of an existing internal tool rather than genuinely novel work. When we engaged a specialist ahead of year two, they reviewed the prior claim, identified the overclaim, and we corrected it voluntarily. The revised claim was smaller but defensible. We have not had a compliance check since.”
SaaS founder, Series A, London, R&D merged scheme
“We were about to run our SEIS round without advance assurance, on the assumption that we clearly qualified. Our accountant found that a prior consultancy contract we had run through the company was borderline under the qualifying trade test. We got advance assurance before approaching investors. The process took eight weeks and meant every investor conversation started with confirmation rather than a risk.”
Pre-seed founder, fintech, South East, SEIS advance assurance
“We set up our EMI scheme two years into the company. At the point we started the process, we had missed the window to notify three early option grants. Those options lost their EMI qualifying status. We have since restructured the affected grants and now have a process that files the ERS return and grant notifications on the same calendar as our board meetings.”
CTO, software development company, Midlands, EMI scheme and ERS returns
Common questions
Do funded startups need a specialist accountant?
A generalist firm can file accounts and a Corporation Tax return. The compliance obligations that become material after investment (R&D claims, EIS compliance statements, EMI grant notifications, annual ERS returns, AIF submissions before CT600 claims) are encountered infrequently by a generalist and handled routinely by a specialist. The risk of getting one of them wrong, and the cost of correcting it, are both higher than the incremental cost of engaging a specialist from the outset.
What makes you different from a generalist or a cheap online filing service?
Generalist firms and filing services cover annual accounts and standard CT returns well. We cover those too, but our focus is the specialist layer: R&D claims under the merged scheme and ERIS, SEIS and EIS advance assurance and compliance, EMI option scheme setup and ongoing compliance, share scheme hygiene, and the founder capital tax position at exit. These are not occasional services for us; they are the main work.
Can you handle our R&D claim and our EMI scheme?
Yes. R&D and EMI are the two services we handle most often for funded and scaling companies. For R&D, we prepare the technical narrative, identify qualifying costs, and submit the Additional Information Form before the CT600. For EMI, we structure the option pool, coordinate the HMRC valuation process, prepare grant documentation, file the annual ERS return, and notify HMRC of grants by the 6 July deadline.
Do you help with SEIS or EIS advance assurance before a round?
Yes. Advance assurance is HMRC pre-clearance that a proposed share issue is likely to qualify for SEIS or EIS. We prepare the application, submit it to HMRC, and manage the process through to clearance. We also prepare the EIS1 compliance statement and EIS3 certificates to investors after the round closes.
We are pre-revenue and loss-making. Is it worth engaging you yet?
Yes, for two reasons. First, pre-trading expenditure is claimable against future profits if it falls within seven years before trade starts. Second, trading losses carry forward and set against future profits, so banking them in annual returns now has real value. The R&D claim notification deadline (6 months after the period end for first-time claimants) also applies from the earliest accounting period in which qualifying activity occurred.
Do you work with SaaS and software-development companies specifically?
Yes. Both have a specific compliance profile: SaaS companies need VAT place-of-supply analysis for overseas B2B revenue and recurring revenue accounting; software development companies face project-level R&D qualification questions and IR35 boundary considerations. We have dedicated service and audience pages for both.
Do you cover IR35 or contractor work?
We state the IR35 and off-payroll boundary where it is relevant to a funded company's working arrangements. Contractor-side IR35 depth (personal service companies, inside-IR35 deductions, umbrella payroll) is out of scope for this firm and belongs with a specialist contractor tax adviser.
How much does it cost?
Fees depend on the scope of engagement: company stage, whether R&D, SEIS/EIS or EMI work is involved, transaction volume, and how much of the finance function we are covering. We do not publish standard prices because the right scope varies significantly. Contact us with a summary of your situation and we will explain what a typical engagement looks like.
Get started
Talk to a startup specialist
Tell us about your company. We will explain what you need and what the position looks like, in plain English, with no obligation.
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Funded and scaling companies only
We do not take sole traders or personal service companies
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24-hour response
Usually the same working day
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All conversations are confidential
We never discuss one client's position with another
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UK-wide (HMRC)
Scottish income tax has its own bands; we flag where they change the outcome
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Guides and analysis
Plain English guidance for UK founders.
Articles and guides on R&D relief, SEIS and EIS, EMI and share schemes, founder tax and extraction, SaaS finance, and startup compliance. Written for founders and finance leads, not for accountants.