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 01342 776555

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 — including our own practice software — 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 01342 776555

Request a callback