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Outsourced Tax Preparation Services

Your Trusted Partner for Tax Preparation Outsourcing in the United Kingdom

Streamline your tax season and scale smarter with expert-level corporation tax, self-assessment, and tax compliance solutions – trusted by accounting firms across the UK.

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Outsourced Tax Preparation Services For UK Accounting Firms

Are You a Bookkeeping or Accounting Firm Looking to Outsource your Tax Work?

Cost Reduction

Free Up Capacity

Fix Staff Shortages

Ensure UK Compliance

"We don't just prepare tax returns; we act as the back-office tax engine that allows UK accounting firms to focus on high-value advisory."

Our Outsourced Tax Preparation Services

Comprehensive tax solutions tailored for UK accounting firms to streamline compliance and maximise efficiency during every tax season.

Corporation Tax (CT600)

  • Corporation tax computation preparation
  • CT600 return drafting
  • Capital allowances calculations
  • R&D tax credit workings
  • Loss relief and group relief schedules

Self Assessment (SA100)

  • Individual self-assessment tax returns
  • Employment and rental income schedules
  • Capital gains tax computations
  • Foreign income and remittance basis

Partnership Returns (SA800)

  • Partnership tax return preparation
  • Partner profit allocation statements
  • LLP and general partnership support
  • Supplementary pages preparation

Tax Supporting Schedules

  • Detailed tax working papers
  • Depreciation and amortisation schedules
  • Director's loan account reconciliations
  • Reviewer-ready formatted files

Capital Gains Tax

  • CGT computations for individuals
  • Residential property disposals
  • Business asset disposal relief
  • Annual exempt amount workings

Trust & Estate Tax Returns

  • SA900 trust tax return preparation
  • Estate income tax computations
  • Inheritance tax supporting schedules

What are Outsourced Tax Preparation Services ?

Outsourced tax preparation services for UK accounting firms mean getting help from an offshore outsourcing firm for all types of tax return and compliance work. This gives firms access to skilled tax professionals, saves time and money during busy seasons, and ensures all work is done accurately and on time. With growing competition in the UK, more and more accounting firms are choosing to outsource their tax preparation. It helps them to focus on their clients and business growth while the back-office tax work is handled efficiently and reliably. With over 11 years of experience, we have successfully partnered with more than 50 accounting and bookkeeping firms across the UK, helping them scale through peak tax periods without stress.

These days, UK accounting firms can outsource all manner of tax work. It could be straightforward self-assessment returns — time-consuming tasks that take up your whole day, or corporation tax computations and CT600 drafts — which can become a real headache during the January and April deadlines if you're doing it all alone. Then there's capital gains tax workings, partnership returns, trust returns, and all the supporting schedules. The advantage of using external providers is clear: they have the right software, trained staff, and proven processes.

Cost Savings

External providers operate with lower overhead, undercutting what you'd spend developing identical capabilities internally.

Massive Scalability

Particularly during insane periods like tax season. Your partner scales capacity quickly. No frantic hiring or burnout.

Quality Performance

Work with specialists obsessed with specific tax functions. Tough for generalist firms to match that laser focus.

Risk Management

Less reliance on individual employees, plus providers with robust HMRC compliance frameworks and quality controls.

How Our Outsourced Tax Preparation Model Works

A seamless, secure, and transparent workflow designed to act as an extension of your local tax team.

01

Secure Assignment

Assign tax work securely via your preferred system. We adapt to your existing software and security protocols.

02

Expert Processing

Dedicated offshore tax professionals prepare your returns with precision, ensuring all UK tax standards and HMRC requirements are met.

03

Internal Quality Audit

Rigorous internal quality checks are performed to ensure 100% accuracy before any file leaves our desk.

04

Review & Return

Work is returned promptly for your final review. We ensure everything is reviewer-ready and HMRC-compliant.

05

Client Delivery

You submit the final tax returns to HMRC and communicate with your clients, maintaining your firm's brand identity.

Turnaround times are agreed in advance.

Tax Preparation Outsourcing Services In UK

In the UK, tax preparation outsourcing services cover a wide range of functions, such as corporation tax computations, CT600 drafting, self-assessment returns, partnership tax returns, capital gains tax workings, trust and estate returns, and all the supporting schedules that go with them.

At Exuberant we use the latest tax software to ensure that there are no mistakes, and work is on time and compliant with all HMRC regulations. Outsourcing your tax preparation allows firms to concentrate on significant client engagements and advisory work, hence saving time and cash during the busiest parts of the year.

Our goal in offering these services is to give UK accounting firms a genuine competitive advantage through reliable, specialist outsourcing. Across the entire United Kingdom we are able to connect you with specialised tax preparation support that is tailored around your existing workflows and software.

It is time to take the pressure off your in-house team during tax season while saving money and maintaining quality through consistent outsourcing at Exuberant Global.

Transform your Tax Practice with Exuberant Global

Available as per UK Timing and Indian Timing.
Easily accessible through chat, mail or call.
Expert in all tax software used in UK — CCH, IRIS, Taxfiler, Digita.
Well versed with UK Corporation Tax, Income Tax and CGT legislation.
Make Your Own Tax Team in 48 Hours.
Reviewing each and every tax return before sending.
Get a Dedicated Full Time Tax Preparer or Corporation Tax Specialist or Self Assessment Expert.

Start with a 10 Hour Free Trial

No commitment. No credit card. Experience our quality firsthand — bookkeeping, tax, payroll, or any accounting task. Dedicated accountant assigned within 24 hours, working on your actual client files.

Software We Master

Expert proficiency in leading UK accounting and automation tools. We work where you work.

Xero
QuickBooks
Sage Cloud
Neat
Wave
Iris
BrightPay
Receipt Bank
TaxCalc
MoneySoft
Oracle
Zoho Books

Don't see yours? We quickly adapt to any custom or cloud-based software you prefer.

Serving All Types of UK Accounting Firms

From sole practitioners to large multi-partner firms — we scale with your tax preparation needs.

Sole Practitioners

Chartered Accountants (CA)

ACCA & CPA Firms

Bookkeeping Practices

Audit Firms

Tax Advisory Firms

Multi-Partner Firms

Accounting Networks

Leaders in Tax Preparation Outsourcing — Exuberant Global

Our experience over many years has given us a unique capability to serve accountants with tax preparation needs that are both varied and time-critical. We have the capacity to offer corporation tax, self-assessment, and all related tax services quickly owing to our team of experienced tax professionals.

For both small and big practices that need UK tax preparation help, we provide a cheap, accurate, simple yet efficient service. By choosing us, you'll get high-quality tax returns at rates that beat the UK average by 60%.

Made Just for UK Accountants, Tax Advisors & Accounting Firms

We understand the UK tax system inside out. All of our services are tailored to the distinctive requirements of UK CAs, tax advisors and accounting firms.

Prices That Work for You

Exuberant Global keeps it flexible. Whether you want to pay by the hour, have a full-time tax preparer, or just need help during tax season, our pricing fits your needs.

Top-Notch Tax Software

Ensure that your returns are always accurate and on time. We use CCH, IRIS, Taxfiler, Digita, and all major UK tax platforms to guarantee quicker and more reliable output.

Your Data is Safe with Us

You do not have to worry about your client information. Exuberant Global has very stringent data protection policies ensuring anything you share remains private and secure.

Fast and Reliable Turnarounds

Exuberant Global delivers fast and effective tax preparation to UK accounting firms globally. Meeting your HMRC deadlines without ever compromising on quality.

Skilled Tax Team at Your Service

Our team of experienced tax professionals and accountants will take care of everything, delivering some of the finest outsourced tax preparation support available in the UK market.

Hire Specialist Tax Professionals

Corporation Tax Specialist

Corporation Tax Specialist

CT600 & Computations

Specialised in UK corporation tax computations, capital allowances and CT600 drafting.

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Self Assessment Expert

Self Assessment Expert

SA100 & CGT

Precision self-assessment return preparation including capital gains and rental income schedules.

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Tax Compliance Specialist

Tax Compliance Specialist

HMRC Compliance

Handling complex HMRC compliance, partnership returns and trust tax return preparation.

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Tax Reviewer

Senior Tax Reviewer

Quality & Assurance

Rigorous senior review of all tax returns ensuring accuracy and full HMRC regulatory adherence.

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Trusted by 500+ UK Accountants

Real words from real clients across England, Scotland, Wales & Ireland.

Data Security is Our Priority

We understand that your client tax data is the most sensitive asset your practice holds. That's why every engagement with Exuberant Global is protected by enterprise-grade security protocols, strict confidentiality agreements, and internationally recognised certifications.

From the moment you share access to the moment completed tax returns are delivered, your data remains protected by multi-layered security controls, GDPR-compliant handling, and a team trained in data protection best practices.

ISO 27001 Certified ISO 9001 Certified GDPR Compliant NDA Protected
End-to-End Encryption

All data transfers are encrypted using industry-standard protocols, ensuring your client tax files are protected during every step of the process.

Strict Access Controls

Role-based access ensures only authorised team members can view client tax data, with full audit trails maintained throughout.

NDA Before We Start

A comprehensive Non-Disclosure Agreement is signed before any tax work begins, legally protecting your confidential client information.

Secure Cloud Infrastructure

Work is performed within secure, monitored environments aligned with ISO 27001 information security standards.

Ready to Save 60% on Your Accounting Costs?

Join 500+ UK accounting firms who trust Exuberant Global as their outsourcing partner. ISO Certified, GDPR Compliant, NDA Protected.

Frequently Asked Questions

Outsourced tax preparation services allow you to delegate your corporation tax, self-assessment, partnership returns, and all supporting compliance work to a dedicated team of qualified tax professionals. This helps firms reduce costs, improve accuracy, save management time, and gain access to experienced tax preparers without hiring an in-house team — especially valuable during peak tax seasons.
Our offshore tax team consists of over 100 highly qualified professionals with strong experience across UK tax legislation, HMRC requirements, and all major UK tax software platforms. Every return is prepared by trained tax professionals and thoroughly reviewed by senior UK-qualified accountants before delivery. Our UK leadership team includes professionals accredited by ACCA and CIMA.
Yes. Data security and compliance are a top priority for us. We follow strict confidentiality protocols, secure access controls, and GDPR-compliant data handling. Our tax preparation processes align with all UK regulations, including HMRC requirements, Corporation Tax rules, Income Tax legislation, and Making Tax Digital (MTD), ensuring your client data remains safe and fully compliant at all times.
We can typically start within a few business days. To proceed, we will need access to the tax software used across your companies — CCH, IRIS, Taxfiler, Digita or others. You can either share access securely with our team or create a dedicated email under your domain for access. We will also need access to your document drive (OneDrive, Google Drive, or any other platform you use) so we can start the onboarding process smoothly.
Our team consists of qualified tax professionals with ACCA, CIMA, and CA certifications, with extensive experience in UK tax legislation, HMRC regulations, corporation tax, self-assessment, and all major UK tax software platforms including CCH, IRIS, Taxfiler, and Digita.
Unlike many generic outsourcing firms, we provide industry-specific tax preparation support, dedicated professionals, and transparent communication — not shared resources. Our team works with UK tax legislation, popular software (CCH, IRIS, Taxfiler, Digita, QuickBooks, Xero), and established workflows that align with your existing processes.
You can outsource a wide range of tax functions, including corporation tax computations & CT600 drafting, self-assessment returns (SA100), partnership returns (SA800), capital gains tax workings, trust & estate tax returns (SA900), and all supporting schedules and working papers. We customise services based on your firm's size, client base, and existing workflow.
You will be assigned a dedicated tax preparer or tax team who understands your firm, your clients, and your reporting requirements. This ensures consistency, faster turnaround times, and better communication — something many competitors fail to provide with shared resource models.
Our service terms are designed to be flexible and transparent. For most hourly and monthly plans, we operate on a simple 30-day notice period. For larger or long-term engagements, we may agree on a yearly contract with a 90-day notice period, ensuring stability and protecting the interests of both parties.
We follow a simple and transparent 3-step tax preparation outsourcing process:

1. Document sharing – You securely share the required client documents, trial balances, and instructions with us.
2. Task execution – Our experienced offshore tax team prepares the returns while providing regular progress updates.
3. Review & approval – You review the completed tax returns and either approve them or request changes, which are promptly addressed.

Ready to Scale Your Accounting Practice?

Join 500+ UK accounting firms who trust Exuberant Global as their outsourcing partner. Get started today with a free 10-hour trial — no credit card, no commitment.

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  • ✔ Save up to 60% cost
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