Limited Company Accounts
Full year-end accounts, Corporation Tax returns and Companies House filings. Everything done properly and on time.
ACCA Qualified · Based in Banbury · UK-Wide
The Accountant
Trades Rely On.
CIS returns, VAT, Self-Assessment and bookkeeping for builders, subcontractors, and sole traders. Fixed monthly fees. Fast turnaround. No jargon.
Fixed fees — no surprises
HMRC-compliant
Reply within 24 hrs
20+
Years in UK Tax & CIS
ACCA
Qualified Member
HMRC
Compliant
Who We Work With
Built for people who work with their hands
We don't try to serve everyone. We specialise in the trades — which means we know your deadlines, your CIS deductions, your industry's quirks inside out.
Builders & Subcontractors
CIS returns filed accurately every month. Never miss a deduction.
Electricians
VAT, self-assessment, and bookkeeping handled so you can focus on the job.
Plumbers & Gas Engineers
Fixed monthly fee covers everything. No hourly billing, no shock invoices.
Landscapers & Gardeners
Sole trader or limited company — we handle the paperwork end to end.
Self-Employed Drivers
Tax returns, mileage claims and expenses done properly, on time.
Small Limited Companies
Year-end accounts, Companies House compliance, and payroll sorted.
What We Handle
Every service your trade business needs
Self-Assessment
We take care of your annual tax return from start to finish — maximising your allowable expenses and filing before the January deadline.
Cashflow Forecasting & Budgeting
Know what's coming in and going out. Clear forecasts and budgets so you can plan ahead, avoid surprises, and keep the business steady.
Business Growth Advisory
Practical, straight-talking advice to help your trade business grow — from pricing and profitability to when to hire or go limited.
CIS Returns
Fast, accurate monthly CIS submissions so you get paid without delays or HMRC complications. We handle contractor verifications too.
VAT Returns
Making Tax Digital compliant filings every quarter. Whether you're on standard, flat rate or cash accounting — we'll file correctly and on time.
Bookkeeping
Clear, organised monthly records so you always know where your business stands. Fully MTD compatible and ready for year-end.
Payroll
Simple, reliable payroll for small teams and subcontractors. RTI submissions, payslips and pension auto-enrolment handled.
Getting Started
Simple from day one
Book a free call
15 minutes — tell us about your business and we'll explain exactly what we'll do and what it costs. No obligation.
We take over the paperwork
Send us your records — however organised (or disorganised) they are. We sort it out and deal with HMRC directly.
You focus on the work
Fixed monthly fee, everything filed on time, all questions answered. Your books are no longer your problem.
Why Keystone
Fixed fees. No surprises. Ever.
We don't bill by the hour or spring hidden extras on you. You'll always know exactly where you stand — and exactly what you're paying.
Fixed Monthly Fees
One agreed price. No hourly rates, no shock invoices at year-end. Budget with confidence.
Fast Turnaround
We know your time is valuable. Returns filed promptly, questions answered within 24 hours.
HMRC-Compliant
Everything filed properly, on time, and fully compliant. ACCA-qualified, so it's done right.
Trades Specialists
We only work with tradespeople. We know your industry, your deductions, and your deadlines inside out.
Every business is different — so we'll give you a clear, fixed quote after a quick chat.
Get Your Free QuoteClient Reviews
What tradespeople say
Verified reviews from real clients on Google and Trustpilot.
Google reviews coming soon
We're collecting verified reviews on Google. Once live, they'll appear here and update automatically.
Trustpilot reviews coming soon
We're collecting verified reviews on Trustpilot. Once live, they'll appear here and update automatically.
ACCA Member
About the Accountant
Catalin Viscu
Over 20 years of experience in UK tax compliance and CIS regulations — dedicated entirely to supporting tradespeople and subcontractors.
Over 20 years of experience in UK tax compliance and CIS regulations
ACCA qualified member — meeting the highest professional standards
Specialist in sole traders and small limited companies in the trades sector
No-nonsense, straightforward approach — you always know what's happening with your money
Advice & Guides
From the blog
Loading articles…
Get in Touch
Based in Banbury,
serving clients across the UK.
Send us a message and we'll get back to you within 24 hours. Or book a free 15-minute call directly into Catalin's diary.
Book a Free 15-Minute Call