37th Floor, 1 Canada Square, Canary Wharf, E14 5AA Next HMRC deadline: — 020 3394 0054
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Professional Services

Helping consultants, advisors and service businesses manage their finances with precision, efficiency and full compliance.

Industries & Sectors

Professional Services

Make more time for your expertise.

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Clarity. Confidence. SIA.↗

Overview

We support a wide range of professionals — from solo consultants to multi-person firms — with expert accounting, tax, and financial management tailored to service-based operations.

With no stock, but plenty of billable time to track, we help you stay on top of cashflow, invoicing, and profitability — all while meeting your tax and regulatory obligations.

How We Help Professional Services Businesses

Cloud Accounting Setup

Real-time financial data and simple dashboards help you track invoices, expenses and profitability.

Self-Assessment & Tax Planning

Whether operating as a sole trader or limited company, we help you optimise your tax position.

Bookkeeping & VAT Filing

We manage your records and ensure timely, accurate VAT returns — no more chasing receipts.

Payroll & Auto Enrolment

For agencies and firms with teams, we offer complete payroll support and pension compliance.

Business Growth Support

From restructuring to raising capital, we advise on financial planning as your business expands.

Visit SIA

Find us in Canary Wharf

37th Floor, 1 Canada Square, London E14 5AA

Get In Touch With SIA

Professional standards

Membership of Accounting Body

AAT Licensed Accountant
IFAC — International Federation of Accountants
IFRS Accounting
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