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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.
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.
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.
From taxable profit adjustments to CT600 schedules, our offshore team prepares the detail your managers need for a faster, cleaner review.
Preparation of CT600 return data from final accounts, tax computations, prior-year files, and your firm's checklist.
Taxable profit calculation, add-backs, deductions, reliefs, tax charge, and payable/refundable position support.
Review of entertainment, depreciation, penalties, personal costs, legal fees, and other common add-back areas.
AIA, WDA, special rate pools, additions, disposals, balancing charges, and fixed asset tax treatment summaries.
Small profits rate, main rate, associated company prompts, short period considerations, and marginal relief notes.
Trading losses, brought-forward losses, claims, group prompts, and loss utilisation schedules for review.
Indicators for loans to participators, R&D, group relief, charities, restitution interest, or other CT600 supplements.
Software-based preparation support for computations, tagging workflows, accounts tie-back, and submission-ready packs.
Concise review notes, open queries, risk flags, filing deadline prompts, and handoff notes for your tax reviewer.
Your practice keeps final judgement and HMRC submission control while our delivery desk handles repeatable production work.
Move routine CT600 preparation, schedules, and computation drafting away from overloaded senior staff.
Every file includes open queries, tax treatment notes, and areas needing your firm's judgement or client confirmation.
Use offshore corporation tax filing UK support to protect margins while keeping quality control in your UK team.
Your checklists, tax review process, naming conventions, and software steps are followed across every return.
Return and payment deadline prompts help your team prioritise files before HMRC penalties or client pressure escalate.
Work is prepared behind the scenes under your firm's process, with controlled access and confidentiality.
A structured workflow UK accountants can review confidently when they outsource Corporation Tax return preparation.
You provide final accounts, trial balance, prior-year return, tax notes, deadlines, and software instructions.
We draft tax adjustments, capital allowance schedules, loss treatment, rate checks, and CT600 inputs.
Open points, judgement areas, missing evidence, supplementary page prompts, and filing risks are documented.
Your reviewer receives a clean CT600 pack ready for approval, amendment, client sign-off, and filing workflow.
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.
Start Free TrialLekhaWekha 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.
Book a Discovery CallCorporation 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.
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.
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.
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.
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.
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.
Send us one Corporation Tax return file. Experience our computation pack, query log, and review-ready CT600 support with zero financial commitment.
Start Free Trial Book a Discovery CallEach file is prepared around the company accounts, tax adjustments, rates, reliefs, software workflow, and your firm's review standards.
CT600 return data, tax charge, payable/refundable position, declaration prompts, and filing pack support.
Tax adjustments, add-backs, capital allowances, losses, reliefs, and accounts tie-back schedules.
Main rate, small profits rate, marginal relief, associated company prompts, and short period considerations.
Open queries, judgement areas, missing data, supplementary page prompts, and manager review notes.
Software agnostic and familiar with major UK tax, accounts production, bookkeeping, and practice workflow tools.












"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."
"We use LekhaWekha for Corporation Tax production during busy months. They understand the difference between preparation and final tax judgement."
"The review packs are consistent across clients, which makes partner sign-off faster. It has helped us clear CT600 backlog without hiring locally."
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