Siensi Financial Solutions

Accountants, Bookkeepers & Tax Specialists

Friendly, fixed-fee accountancy for small businesses, contractors, landlords and sole traders — based in Crawley and working with clients across Sussex, Surrey and beyond. We take the compliance off your plate so you can run your business.

Request a free callback Call 01293 222508

Why Siensi?

You deal with a qualified accountant, not a call queue. We keep things personal and plain-English, agree fixed fees up front so there are no surprise bills, and run everything on modern cloud systems so deadlines are never missed and you always know where you stand.

What we do

Everything a small business needs, under one roof — pick the services you need or hand us the whole finance function

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Bookkeeping

Accurate, up-to-date books without the evening admin. We work with Xero, QuickBooks, FreeAgent and spreadsheets — whatever suits your business.

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Payroll & Pensions

Payslips, RTI submissions, auto-enrolment and pension uploads handled every month, on time, with HMRC kept happy.

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VAT

VAT registration, the right scheme for your business, and accurate Making Tax Digital returns filed every quarter.

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Self Assessment

Personal tax returns prepared and filed without the January panic — including rental income, dividends and capital gains.

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CIS

Construction Industry Scheme returns, subcontractor verification and deduction statements for contractors and subbies alike.

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Year-End Accounts & Corporation Tax

Statutory accounts prepared and filed at Companies House, with your corporation tax return done at the same time — and tax planning advice along the way.

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Companies House Compliance

Confirmation statements, director changes, share transfers and company formations dealt with promptly and correctly.

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HMRC Representation

We act as your agent with HMRC — handling letters, queries and enquiries so you don't have to sit on hold.

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Outsourced Finance Function

Growing business? We can act as your complete in-house finance team — bookkeeping, management accounts, payroll and reporting, tailored to you.

Getting started is easy

Switching accountant — or appointing your first one — is simpler than you think

1

Have a free chat

Tell us about your business over the phone or a coffee. No obligation, no jargon.

2

Get a fixed quote

We agree exactly what's included and what it costs — a fixed monthly or annual fee, no surprises.

3

We handle the rest

We contact your previous accountant, transfer everything across, and register with HMRC as your agent. You barely lift a finger.

Let's talk about your business

A free, no-obligation chat about what you need and what it would cost. If we're not the right fit, we'll say so.

Call 01293 222508

Request a callback