Compliance

Startup accounting services

Accountants for startups in London, company setup, bookkeeping, payroll, year-end accounts, R&D and SEIS/EIS in one fixed monthly fee.

Regulated and qualified through ICAEW, ACCA and AAT memberships held across our team

What this means for your company

Accountants for startups in London, company setup, bookkeeping, payroll, year-end accounts, R&D and SEIS/EIS in one fixed monthly fee. We work with technology, SaaS, e-commerce, marketplace and online businesses trading as UK limited companies, from first-year micro-entities in Croydon and Morden to funded teams in central London, with a fixed scope and fee agreed before anything starts.

01

Company formation, PAYE and VAT registrations where needed

02

Cloud bookkeeping set up around how you invoice and spend

03

Payroll, pensions and director remuneration

04

Year-end accounts and CT600 filed early, not on the deadline

05

R&D, SEIS and EIS reliefs reviewed as a matter of course

06

A named accountant who answers questions in plain English

What the service covers

Accountants for startups in London, company setup, bookkeeping, payroll, year-end accounts, R&D and SEIS/EIS in one fixed monthly fee.

• Company formation, PAYE and VAT registrations where needed

• Cloud bookkeeping set up around how you invoice and spend

• Payroll, pensions and director remuneration

• Year-end accounts and CT600 filed early, not on the deadline

• R&D, SEIS and EIS reliefs reviewed as a matter of course

• A named accountant who answers questions in plain English

The rules that shape this work

A new company's first accounting period runs to the anniversary month end of incorporation, so the first accounts are usually slightly longer than a year. First accounts are due 21 months from incorporation; after that it is nine months from the period end for Companies House and twelve months for the CT600, with the tax itself payable nine months and one day after the period end.

Most early-stage companies qualify as micro-entities or small companies and can file abridged information publicly. That keeps competitor-visible detail down, but lenders and investors will still ask for full management figures.

Registering for VAT is compulsory once taxable turnover passes £90,000 in any rolling twelve months. Pre-revenue startups often register voluntarily to reclaim input VAT on development and equipment spend, worth modelling, especially where customers are businesses.

Thresholds, rates and deadlines quoted here reflect the 2026/27 UK position. Check current GOV.UK guidance, or ask us, before you rely on them for your own company.

How we run it

We start by looking at the last filed accounts, your current records and your filing dates, then confirm a fixed scope and fee in writing.

Once the work is live you get reminders ahead of each deadline, a named person to ask questions, and a plain-English summary when the figures are ready, not a PDF with no explanation.

Frequently asked

Startup accounting services: questions directors ask

Do I need an accountant for my startup?

Legally you do not, but directors are personally responsible for accurate accounts and on-time filing, and early mistakes, wrong share structure, missed SEIS window, unclaimed R&D, cost far more than the fee to avoid them.

How much does a startup accountant cost in the UK?

For an early-stage limited company with light transaction volume, monthly fees typically run in the low hundreds, rising with payroll, VAT and advisory scope. We quote a fixed fee against a written scope so nothing is billed by surprise.

What should we get right in the first six months?

Share structure and founder shares issued at the right time, a clean bank and bookkeeping setup, SEIS/EIS advance assurance if you plan to raise from angels, and R&D record-keeping started from day one rather than reconstructed later.

Can you take over from another accountant mid-year?

Yes. We handle professional clearance, agent authorisation with HMRC and the handover, and confirm in writing which firm completes the current year end.

What records are needed for startup accounting services?

Keep bank statements, sales and platform reports, purchase invoices, payroll records, VAT workings, finance agreements and Companies House correspondence. We confirm the exact list at onboarding and identify gaps before a filing deadline becomes urgent.

How much does help with startup accounting services cost?

The fee depends on transaction volume, record quality, VAT and payroll requirements, historic catch-up and the level of reporting needed. We agree a fixed scope and price before technical work starts, with published packages available on our fees page.

Can you take over startup accounting services from another accountant?

Yes. We request professional clearance, collect the prior records and authorities, check the next Companies House and HMRC deadlines, and give you one clear handover list. The process is normally completed remotely.

Can startup accounting services be handled online?

Yes. We work through secure cloud records, scheduled reviews and digital approvals, while keeping a named team available by phone, video call and email. Clients can also visit our Morden office by appointment.

Which accounting software works best for startup accounting services?

We regularly work with Xero, QuickBooks, FreeAgent, Sage and connected sales or expense apps. The right setup depends on transaction volume, integrations and the reports you need, not simply the software brand.

What tax deadlines matter for startup accounting services?

The relevant calendar may include annual accounts, Corporation Tax payment and return dates, confirmation statements, VAT returns, payroll submissions and Self Assessment. We map the dates from your company year end and registrations.

Google reviews

What Our Clients Say

Rated 4.9 out of 5From 302 Google reviews
Accotax have been our accountants for many years now. We maintained them because of their professionalism. In the last couple of years I have been working with Imran, who has been very professional and helpful in guiding us through the whole process, explaining and clarifying every aspect of it. Very prompt in responding to questions and patient with us even when we seem to be slow.
Mansur Liman · Long-standing company client
We worked with a few different accountants before finally settling with Accotax, and we're really glad we did. They take the time to understand how our business works and what our needs are. Anum, who looks after our account on a day-to-day basis, including reconciling invoices and preparing the annual accounts, is amazing, professional, efficient, and follows the processes we have put in place together. Accotax has made our accounting experience much smoother and easier. We see them as a long-term partner as our business continues to grow. I would 100% recommend them.
Mael Leboucher · Year end accounts & bookkeeping
I've been working with Accotax since January 2024, and their support has grown alongside my business needs. My personal allocated manager, Umer, provides tailored services for both of my companies, adapting as I expand and ensuring everything runs smoothly. They are responsive, knowledgeable, and always clear in their communication. Their help with accounts, VAT, payrolls, pensions and compliance gives me real confidence and peace of mind.
Зайтуна «Анонимная татарка» Manning · Two limited companies, VAT, payroll & pensions
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Limited company accountants in London, Morden, Croydon and across the UK.

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Four London offices

Meet us in Morden, Croydon, Chelsea or Mitcham

Work with us entirely online, or sit down with your accountant at whichever office suits you. Open Monday to Friday, 9:00am to 5:30pm. Office visits are by appointment only, so please book before coming in.

Morden, Surrey12 London Road, Morden, SM4 5BQHead office, two minutes from Morden Underground station.DirectionsRead ACCOTAX Google reviews
Croydon73 Park Lane, Croydon, CR0 1JGCentral Croydon, minutes from East Croydon station.DirectionsRead Croydon Google reviews
ChelseaM-112, 65-69 Lots Road, SW10 0RNWest London base for Chelsea, Fulham and Kensington clients.DirectionsRead ACCOTAX Google reviews
Mitcham141 Morden Road, CR4 4DGServing Mitcham, Tooting and the CR4 postcodes.DirectionsRead Mitcham Google reviews

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Book a call

Pick a time that suits you and a qualified accountant will call you about your company, deadlines and fees.

Appointments run monday to friday, 9:00am to 5:30pm. Your confirmation is emailed straight away.

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