LekhaWekha – Outsourcing Solutions for Accounting Practices
Outsourced Corporation Tax Return UK Accountants | LekhaWekha
CT600 & Corporation Tax Support

Outsourced Corporation Tax Return Support for UK Accountants

Scale CT600 production without stretching your tax team. LekhaWekha prepares corporation tax computations, CT600 return inputs, review notes, schedules, and filing-ready support under your firm's white-label process.

CT600 Preparation Tax Computations Marginal Relief Checks iXBRL-Ready Support White-Label Delivery
CT600
Return Support
50%
Cost Reduction
30+
UK Firm Partners
12mo
Filing Deadline
UK accountants reviewing outsourced corporation tax return and CT600 preparation
CT
HMRC Return Ready
ACCA Approved - Gold
ICO Registered
GDPR Compliant
IFA Member
IPA Registered
Secure Offshore Workflow

CT600 Preparation Support for Busy UK Accounting Practices

Corporation Tax work is rarely just a form-filling exercise. Each return needs clean accounts tie-back, taxable profit adjustments, capital allowance checks, loss treatment, associated company considerations, relief review, and a clear trail for partner sign-off.

LekhaWekha provides the outsourced corporation tax return UK accountants need to increase production capacity while keeping final advice, client communication, and HMRC filing control inside their practice.

Our offshore tax support team prepares CT600-ready computations, schedules, query logs, and review notes so your managers can focus on technical decisions instead of routine production pressure.

What Your CT600 Pack Includes

  • Corporation Tax computation preparation from final accounts
  • CT600 return inputs and filing-ready review pack
  • Disallowable expenses, add-backs, deductions, and adjustment schedules
  • Capital allowances, AIA, WDA, and fixed asset pool summaries
  • Losses, group or associated company prompts, and marginal relief checks
  • Supplementary page indicators and reviewer query notes
  • iXBRL-ready workflow support in your software environment
  • White label corporation tax services UK accounting practices can deliver under their own brand

Outsource CT600 Preparation Without Losing Review Control

CT600 jobs become stressful when accounts are final but computations, schedules, and return checks are still waiting. We give your practice a dependable production desk that prepares the tax pack while your team keeps technical judgement and client ownership.

Peak-season CT600 capacityOutsource CT600 preparation UK firms can use when tax production pressure rises.
Accounts tie-backCorporation Tax computations are prepared against final accounts and workpapers.
Rate review promptsCurrent rate, small profits rate, and marginal relief points are highlighted for review.
White-label processOutputs align with your review notes, templates, software workflow, and delivery standards.
Secure offshore deliveryClient tax data is handled through controlled access and confidentiality-led workflows.
Review query supportUK business hours overlap supports queries, review points, and urgent returns.

Corporation Tax Return Support - From Accounts to CT600 Pack

From taxable profit adjustments to CT600 schedules, our offshore team prepares the detail your managers need for a faster, cleaner review.

01

CT600 Return Preparation

Preparation of CT600 return data from final accounts, tax computations, prior-year files, and your firm's checklist.

02

Corporation Tax Computations

Taxable profit calculation, add-backs, deductions, reliefs, tax charge, and payable/refundable position support.

03

Disallowable Expense Review

Review of entertainment, depreciation, penalties, personal costs, legal fees, and other common add-back areas.

04

Capital Allowance Schedules

AIA, WDA, special rate pools, additions, disposals, balancing charges, and fixed asset tax treatment summaries.

05

Rate & Marginal Relief Checks

Small profits rate, main rate, associated company prompts, short period considerations, and marginal relief notes.

06

Losses & Relief Tracking

Trading losses, brought-forward losses, claims, group prompts, and loss utilisation schedules for review.

07

Supplementary Page Prompts

Indicators for loans to participators, R&D, group relief, charities, restitution interest, or other CT600 supplements.

08

iXBRL Workflow Support

Software-based preparation support for computations, tagging workflows, accounts tie-back, and submission-ready packs.

09

Manager Review Pack

Concise review notes, open queries, risk flags, filing deadline prompts, and handoff notes for your tax reviewer.

CT600 Support Built Around Review-Ready Tax Files

Your practice keeps final judgement and HMRC submission control while our delivery desk handles repeatable production work.

Faster Tax Return Turnaround

Move routine CT600 preparation, schedules, and computation drafting away from overloaded senior staff.

Clear Review Notes

Every file includes open queries, tax treatment notes, and areas needing your firm's judgement or client confirmation.

Lower Production Cost

Use offshore corporation tax filing UK support to protect margins while keeping quality control in your UK team.

Consistent CT600 SOPs

Your checklists, tax review process, naming conventions, and software steps are followed across every return.

Deadline Awareness

Return and payment deadline prompts help your team prioritise files before HMRC penalties or client pressure escalate.

Secure White-Label Delivery

Work is prepared behind the scenes under your firm's process, with controlled access and confidentiality.

A 4-Step CT600 Delivery Process for UK Firms

A structured workflow UK accountants can review confidently when they outsource Corporation Tax return preparation.

01

Share Accounts & Brief

You provide final accounts, trial balance, prior-year return, tax notes, deadlines, and software instructions.

02

Prepare Computations

We draft tax adjustments, capital allowance schedules, loss treatment, rate checks, and CT600 inputs.

03

Review Query Log

Open points, judgement areas, missing evidence, supplementary page prompts, and filing risks are documented.

04

Return Pack Handoff

Your reviewer receives a clean CT600 pack ready for approval, amendment, client sign-off, and filing workflow.

Cleaner Corporation Tax Files, Less Production Drag

We help your firm convert CT600 jobs into a repeatable production workflow. Each file is built around accounts tie-back, tax computation logic, query visibility, and reviewer handoff.

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Tax numbers are checked against final accounts, trial balances, and supporting schedules.
Small profits rate, main rate, marginal relief, and associated company prompts are highlighted.
Missing evidence, technical judgement areas, and client questions are separated clearly.
Your firm remains client-facing and controls approval, advice, and HMRC submission.

A Dedicated Corporation Tax Desk for UK Practices

LekhaWekha is the dedicated delivery unit of AskUs Consultants LLP, an ACCA Gold Approved Employer and ICO Registered firm. Our team supports corporation tax preparation workflows across common UK accounts production and tax software.

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Accountants trained on UK Corporation Tax production workflows
UK business hours overlap for urgent return queries and review points
Works with Iris, TaxCalc, Digita, Capium, Xero, QuickBooks, Sage, and Excel workflows
GDPR-conscious delivery - ICO Registration No. ZB642347
ACCA Approved Employer - Gold standard training environment

Outsourced Corporation Tax Return UK Accountants

Corporation Tax return preparation is one of the highest-pressure compliance workflows inside UK accountancy firms. The return must reconcile with accounts, reflect taxable profit adjustments, include the right computations and schedules, and be ready for online filing through suitable software.

LekhaWekha provides outsourced corporation tax return support UK accountants can rely on when they need extra CT600 capacity. We help prepare computations, tax adjustment schedules, review packs, query logs, and filing-ready support under your firm's white-label process.

What Is a Company Tax Return?

A Company Tax Return is made up of the CT600 form, any required supplementary pages, company accounts, and tax computations. HMRC expects most companies to file online using commercial software, with limited exceptions for paper filing.

Why UK Firms Outsource CT600 Preparation

When firms outsource CT600 preparation, UK practices can reduce bottlenecks around year-end compliance, protect margins, and free managers to focus on review quality and advisory decisions.

  • Increase CT600 production capacity during deadline-heavy periods
  • Reduce time spent on routine computations, schedules, and data entry
  • Keep partner review, tax advice, and client communication in-house
  • Improve consistency with tax workpaper checklists and review notes
  • Use offshore corporation tax filing UK support without exposing your clients to a third party
  • Deliver white label corporation tax services UK accounting practices can scale profitably

Corporation Tax Rates and Review Checks

Current UK Corporation Tax rules include a 19% small profits rate, a 25% main rate, and marginal relief for companies with profits between the relevant thresholds. Associated companies and short accounting periods can affect threshold calculations, so review notes matter.

Who Is This Service For?

This service is built for UK accounting firms, tax practices, sole practitioners, outsourced finance teams, and growing compliance teams that need reliable CT600 production support without adding local headcount.

White-Label Corporation Tax Services UK Accounting Practices

We work behind the scenes. Your clients see your firm, your tax review, your advice, and your filing process. Our team prepares the production pack so your reviewers can approve, amend, and submit with confidence.

Prepared for CT600, Computations, Schedules, and Review

Each file is prepared around the company accounts, tax adjustments, rates, reliefs, software workflow, and your firm's review standards.

CT600

Company Tax Return Inputs

CT600 return data, tax charge, payable/refundable position, declaration prompts, and filing pack support.

Computations

Tax Computation Schedules

Tax adjustments, add-backs, capital allowances, losses, reliefs, and accounts tie-back schedules.

Rates

Rate & Relief Review

Main rate, small profits rate, marginal relief, associated company prompts, and short period considerations.

Review

Reviewer Handoff Pack

Open queries, judgement areas, missing data, supplementary page prompts, and manager review notes.

We Work in Your Software Environment

Software agnostic and familiar with major UK tax, accounts production, bookkeeping, and practice workflow tools.

Iris software logo
Digita software logo
TaxCalc software logo
Caseware software logo
VT Software logo
Xero software logo
QuickBooks software logo
Sage 50 software logo
Sage Cloud software logo
FreeAgent software logo
Dext software logo
Capium software logo

What UK Accountants Say About Our CT600 Support

★★★★★

"Their CT600 packs are clean, well-labelled, and easy for our managers to review. The query notes save a huge amount of back-and-forth."

JS
James Sterling
Partner, UK Accountancy Firm
★★★★★

"We use LekhaWekha for Corporation Tax production during busy months. They understand the difference between preparation and final tax judgement."

SW
Sophie Wagner
Director, CA Practice, London
★★★★★

"The review packs are consistent across clients, which makes partner sign-off faster. It has helped us clear CT600 backlog without hiring locally."

SJ
Sarah Jenkins
Principal, Manchester Practice

Frequently Asked Questions About Outsourced CT600 Preparation

What is outsourced corporation tax return support for UK accountants?
It is a white-label support service where LekhaWekha prepares CT600-ready computations, schedules, query logs, review notes, and filing workflow support for UK accountancy firms.
Can we outsource CT600 preparation UK firms usually handle in-house?
Yes. We prepare CT600 data, corporation tax computations, capital allowance schedules, loss notes, rate checks, and reviewer query packs while your firm keeps final approval and client communication.
Do you submit Corporation Tax returns directly to HMRC?
We prepare filing-ready support under your workflow. Final HMRC submission, agent authorisation, client approval, and tax advice remain with your practice unless separately agreed.
Can you support capital allowances and tax adjustments?
Yes. We prepare capital allowance schedules, disallowable expense reviews, tax adjustment summaries, loss schedules, and open points for your tax reviewer.
Is the Corporation Tax service white-label?
Yes. We work under your templates, file naming, review process, software workflow, and communication standards so your practice remains fully client-facing.
Which software do you support for CT600 work?
We can work with common UK tax and accounts production workflows including Iris, TaxCalc, Digita, Capium, VT, Xero, QuickBooks, Sage, Excel, and your internal checklists.
Can you help with urgent Corporation Tax backlog?
Yes. We can add offshore corporation tax filing UK support for deadline-heavy periods, backlog clearance, new client onboarding, and recurring annual CT600 production.

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